open-swe/INSTALLATION.md

Installation Guide

This guide walks you through setting up Open SWE end-to-end: local development, GitHub App creation, LangSmith configuration, webhooks, the web dashboard, and production deployment.

Open SWE has two runnable pieces:

• The backend — a LangGraph app (three graphs: agent, reviewer, analyzer) plus a FastAPI app (agent.webapp:app) that owns the webhooks and the dashboard API. Both are served together by langgraph dev.
• The dashboard — a TanStack Start + Vite web app in ui/ (package name open-swe-dashboard). It's a thin client over the FastAPI dashboard API (/dashboard/api/*): GitHub-login, per-user model/profile settings, team defaults, enabled-repo and review-style management, user mappings, and the Agents chat UI. It's optional for pure webhook-driven use, but recommended.

The steps are ordered to avoid forward references. Each step only depends on things you've already completed.

Prerequisites

• Python 3.11 – 3.13 (3.14 is not yet supported due to dependency constraints)
• uv package manager
• LangGraph CLI
• ngrok (for local development — exposes webhook endpoints to the internet)
• pnpm (only if you want to run the dashboard UI locally — see step 8). Node 20+ also works, but ui/pnpm-lock.yaml is the canonical lockfile.

1. Clone and install

git clone https://github.com/langchain-ai/open-swe.git
cd open-swe
uv venv
source .venv/bin/activate
uv sync --all-extras

2. Start ngrok

You'll need the ngrok URL in subsequent steps when configuring webhooks, so start it first.

ngrok http 2024 --url https://some-url-you-configure.ngrok.dev

You don't need to pass the --url flag, however doing so will use the same subdomain each time you startup the server. Without this, you'll need to update the webhook URL in GitHub, Slack and Linear every time you restart your server for local development.

Copy the HTTPS URL you set, or if you didn't pass --url, the one ngrok gives you. You'll paste this into the webhook settings in steps 3 and 5.

Keep this terminal open — ngrok needs to stay running during local development. Use a second terminal for the rest of the steps.

3. Create a GitHub App

Open SWE authenticates as a GitHub App to clone repos, push branches, and open PRs.

3a. Choose your OAuth provider ID

Before creating the app you need to decide on an OAuth provider ID — this is a short string you'll use in both GitHub and LangSmith to link the two. Pick something memorable, for example:

your-org-github-oauth

Write this down. You'll use it in the callback URL below and again in step 4 when configuring LangSmith.

3b. Create the app

1. Go to GitHub Settings → Developer settings → GitHub Apps → New GitHub App
2. Fill in:
   • App name: open-swe (or your preferred name)
   • Homepage URL: This can be any valid URL — it's only shown on the GitHub Marketplace page (which you won't be using). Use something like https://github.com/langchain-ai/open-swe
   • Callback URL: GitHub Apps allow multiple callback URLs (one per line). Add both:
     1. https://smith.langchain.com/host-oauth-callback/<your-provider-id> — replace <your-provider-id> with the ID you chose in step 3a (e.g. https://smith.langchain.com/host-oauth-callback/your-org-github-oauth). This is the agent-runtime OAuth callback, brokered by LangSmith (step 4b).
     2. http://localhost:2024/dashboard/api/auth/callback — the dashboard-login OAuth callback (step 8). For production, also add https://<your-dashboard-api-url>/dashboard/api/auth/callback. This is a separate, direct GitHub OAuth flow (not via LangSmith), so it needs its own callback URL.
   • Request user authorization (OAuth) during installation: ✅ Enable this
   • Webhook URL: https://<your-ngrok-url>/webhooks/github — use the ngrok URL from step 2
   • Webhook secret: generate one and save it — you'll need it later as GITHUB_WEBHOOK_SECRET:

     openssl rand -hex 32
     

3. Set permissions:
   • Repository permissions:
     • Contents: Read & write
     • Pull requests: Read & write
     • Issues: Read & write
     • Checks: Read & write — reports an "Open SWE Review" check run on PRs while an auto-review runs, and reads third-party CI conclusions for the auto-fix flow (it watches failing checks on agent-authored PRs and pushes fixes). Without it, check-run creation fails (logged, best-effort) but reviews still work, and CI auto-fix is disabled.
     • Commit statuses: Read-only — only needed if you enable the Status event below; the CI auto-fix flow reads the legacy combined commit-status API for integrations that report via statuses instead of check runs. Without it, status-based CI is silently ignored (logged as "Failed to read combined status").
     • Actions: Read-only — optional; lets Open SWE's sandbox proxy tokens download GitHub Actions workflow/job logs when troubleshooting CI failures. Do not grant Actions write for log access: write permission also allows rerunning, canceling, and deleting workflow runs, which is unnecessary for diagnostics.
     • Workflows: Read & write — required to let Open SWE push branches containing GitHub Actions workflow changes after explicit human approval. Runtime sandbox tokens are still minted without this permission by default and are elevated only around an approved workflow push.
     • Metadata: Read-only
   • Organization permissions (required only if you plan to set ALLOWED_GITHUB_ORGS — see step 5 / Security):
     • Members: Read-only — used to verify org membership for the dashboard-login gate via GET /orgs/{org}/memberships/{username}. Without this permission that call returns 403, the check fails closed, and every dashboard login is rejected.
4. Under Subscribe to events, enable:
   • Issue comment
   • Pull request review
   • Pull request review comment
   • Check run — required for CI auto-fix (watching failing GitHub Actions checks on agent PRs)
   • Check suite — required for CI auto-fix
   • Workflow run — required for CI auto-fix
   • Status — optional; covers integrations that report via the legacy commit-status API
5. Click Create GitHub App

3c. Collect credentials

After creating the app:

1. App ID — shown at the top of the app's settings page. Save this as GITHUB_APP_ID.
2. Private key — scroll down to Private keys → click Generate a private key. A .pem file will download. Save its contents as GITHUB_APP_PRIVATE_KEY.
3. Client ID — shown near the top of the app's settings page (starts with Iv...). Save this as GITHUB_APP_CLIENT_ID.
4. Client secret — under Client secrets → Generate a new client secret. Save it as GITHUB_APP_CLIENT_SECRET.

GITHUB_APP_CLIENT_ID / GITHUB_APP_CLIENT_SECRET power the dashboard login flow (the direct GitHub OAuth in 3b's second callback URL). They are independent of the LangSmith OAuth provider in step 4b — the dashboard talks to GitHub directly, while the agent runtime resolves per-user tokens through LangSmith.

3d. Install the app on your repositories

1. From your app's settings page, click Install App in the sidebar
2. Select your org or personal account
3. Choose which repositories Open SWE should have access to
4. Click Install
5. After installation, look at the URL in your browser — it will look like:

   https://github.com/settings/installations/12345678
   

   or for an org:

   https://github.com/organizations/YOUR-ORG/settings/installations/12345678
   

   The number at the end (12345678) is your Installation ID. Save this as GITHUB_APP_INSTALLATION_ID.

Note

: The installation page may prompt you to authenticate with LangSmith. If you haven't set up LangSmith yet (step 4), that's fine — you can still grab the Installation ID from the URL and complete the OAuth setup later.

4. Set up LangSmith

Open SWE uses LangSmith for:

• Tracing: all agent runs are logged for debugging and observability
• Sandboxes: each task runs in an isolated LangSmith cloud sandbox

4a. Get your API key, project and tenant IDs

1. Create a LangSmith account if you don't have one
2. Go to Settings → API Keys → Create API Key
3. Save it as LANGSMITH_API_KEY_PROD
4. Get your Tenant ID: Visit LangSmith, login, then copy the UUID in the URL. Example: if your URL is https://smith.langchain.com/o/72184268-01ea-4d29-98cc-6cfcf0f2abb0/agents/chat -> the tenant ID would be 72184268-01ea-4d29-98cc-6cfcf0f2abb0. Save it as LANGSMITH_TENANT_ID_PROD.
5. Get your Project ID: open your tracing project in LangSmith, then click on the ID button in the top left, directly next to the project name. Save it as LANGSMITH_TRACING_PROJECT_ID_PROD

Note on per-graph tracing projects. The graphs trace into separate projects by name — open-swe-agent (main agent) and open-swe-review (reviewer/analyzer). "View trace" links resolve the correct project ID from these names automatically (via the LANGSMITH_API_KEY_PROD client), so make sure projects with these names exist in your tenant. If a name can't be resolved, links fall back to LANGSMITH_TRACING_PROJECT_ID_PROD, so set it to whichever project you want links to point at by default.

4b. Configure GitHub OAuth (optional but recommended)

This is the agent-runtime OAuth provider: it lets each agent run authenticate with the triggering user's own GitHub account, brokered by LangSmith. (It is separate from the dashboard-login OAuth, which uses GITHUB_APP_CLIENT_ID/GITHUB_APP_CLIENT_SECRET directly — see step 3c.) Without it, all agent operations use the GitHub App's installation token (a shared bot identity).

What this affects:

• With per-user OAuth: PRs and commits show the triggering user's identity; each user's GitHub permissions are respected
• Without it (bot-token-only mode): all PRs and commits appear as the GitHub App bot; the app's installation-level permissions are used for everything

To set up per-user OAuth:

1. In LangSmith, go to Settings → OAuth Providers → Add Provider
2. Set the Provider ID to the same string you chose in step 3a (e.g. your-org-github-oauth)
3. Enter the Client ID and Client Secret from your GitHub App (found on the GitHub App settings page under OAuth credentials)
4. Enter the Authorization URL as https://github.com/login/oauth/authorize and the Token URL as https://github.com/login/oauth/access_token.
5. Leave "Enable PKCE" unchecked.
6. Save. You'll reference this Provider ID as GITHUB_OAUTH_PROVIDER_ID in your environment variables.

4c. Sandbox snapshots

LangSmith sandboxes provide the isolated execution environment for each agent run. Open SWE boots each sandbox from a pre-built snapshot — you build the snapshot once (from a Docker image) and then reference it by UUID.

(Optional) Build and Push a custom Docker Image to Docker hub First build and push the sandbox Docker image to a registry LangSmith can pull from. On Apple Silicon, force linux/amd64

docker buildx build \
  --platform linux/amd64 \
  -t <your-docker-hub>/<name-of-your-image> \
  --push .

For a multi-arch tag that also runs locally on Apple Silicon:

docker buildx build \
  --platform linux/amd64,linux/arm64 \
  -t <your-docker-hub>/<name-of-your-image> \
  --push .

Then build a snapshot in the LangSmith UI (Sandboxes → Snapshots → New), or via the SDK:

from langsmith.sandbox import SandboxClient

client = SandboxClient(api_key="<your key>")
snapshot = client.create_snapshot(
    name="open-swe",
    docker_image="johanneslangchain/open-swe-sandbox:gh-cli-amd64",  # built from ./Dockerfile
    fs_capacity_bytes=32 * 1024**3,
)
print(snapshot.id)

You can also use the helper script:

uv run python scripts/create_sandbox_snapshot.py \
  --name open-swe-gh-cli-amd64 \
  --image johanneslangchain/open-swe-sandbox:gh-cli-amd64

Then set the resulting UUID in your environment:

DEFAULT_SANDBOX_SNAPSHOT_ID="<snapshot-uuid>"
# Optional; overrides the snapshot's root FS size at sandbox boot. Default is 32 GiB.
DEFAULT_SANDBOX_SNAPSHOT_FS_CAPACITY_BYTES="34359738368"
# Optional; number of vCPUs per sandbox. Default is 4.
DEFAULT_SANDBOX_VCPUS="4"
# Optional; memory in bytes per sandbox. Default is 15 GiB.
DEFAULT_SANDBOX_MEM_BYTES="16106127360"
# Optional; auto-stop a sandbox after this many seconds of inactivity. Default is 7200 (2 hours). 0 disables.
DEFAULT_SANDBOX_IDLE_TTL_SECONDS="7200"
# Optional; delete a stopped sandbox after this many seconds. Default is 86400 (24 hours). 0 disables.
DEFAULT_SANDBOX_DELETE_AFTER_STOP_SECONDS="86400"
# Optional; required only for the admin Repository Snapshots page/template generator.
REPO_SNAPSHOT_BASE_IMAGE="<your-docker-hub>/<name-of-your-image>"

DEFAULT_SANDBOX_SNAPSHOT_ID is required when SANDBOX_TYPE=langsmith. The server validates this at startup and refuses to boot if it's missing. The snapshot should include the GitHub CLI from the project Dockerfile; Open SWE authenticates git and gh through the LangSmith sandbox proxy using runtime-minted GitHub App installation tokens, not deployment-stored GitHub access tokens.

REPO_SNAPSHOT_BASE_IMAGE should point at the same published Open SWE sandbox image you used to create the default snapshot (for example, the image built from ./Dockerfile). The admin Repository Snapshots page uses it as the FROM line when generating per-repo Dockerfile templates. If it is not set, template generation is intentionally disabled so admins do not accidentally build repo-scoped snapshots from a bare image that lacks Open SWE's required tools (git, gh, sfw, language runtimes, and proxy assumptions).

5. Set up triggers

Open SWE can be triggered from GitHub, Linear, and/or Slack. Configure whichever surfaces your team uses — you don't need all of them.

GitHub

GitHub triggering works automatically once your GitHub App is set up (step 3). Users can:

• Tag @openswe in issue titles or bodies to start a task
• Tag @openswe in issue comments for follow-up instructions
• Tag @openswe in PR review comments to have it address review feedback

Which GitHub users can trigger the agent is controlled by the user mapping (GitHub login ⇄ work email ⇄ optional Slack ID), stored in the LangGraph Store rather than in code. Manage it in the dashboard under Admin → User mappings:

• Add / update a single mapping (GitHub login + work email, plus an optional Slack user ID). The list is paged (20 per page).
• Users can also self-onboard: when an unmapped person tags Open SWE in Slack, the agent runs with limited (GitHub App installation) permissions and posts a "link your GitHub account" prompt. Completing the org-gated GitHub OAuth login records a self mapping (carrying the originating Slack ID and work email). Self-signup is therefore bounded by the same ALLOWED_GITHUB_ORGS gate as dashboard login.

You should also configure which GitHub organizations and/or repositories the agent is allowed to operate on. You can specify allowed orgs, specific owner/repo pairs, or both:

# Allow all repos in these orgs
ALLOWED_GITHUB_ORGS="langchain-ai,anthropics"

# Allow specific repos (owner/repo format)
ALLOWED_GITHUB_REPOS="some-user/their-repo,another-org/specific-repo"

A GitHub or Linear webhook is accepted if the resolved repo's org is in ALLOWED_GITHUB_ORGS or the owner/repo is in ALLOWED_GITHUB_REPOS. If both are empty, all repos are allowed. Slack mentions are not rejected from regex-inferred repository text; repository access is bounded by the GitHub App installation permissions.

ALLOWED_GITHUB_ORGS also gates dashboard login: when set, only GitHub accounts that are active members of one of the listed organizations can complete the OAuth login and receive a session. Membership is verified server-side with the GitHub App installation token (so private memberships are visible and no extra OAuth scope is required), and the check fails closed on any API error. When ALLOWED_GITHUB_ORGS is empty, dashboard login is open to any GitHub account (the prior behavior).

Required GitHub App permission: the membership check calls GET /orgs/{org}/memberships/{username}, which requires the GitHub App's Organization → Members: Read-only permission (see step 3b). If you set ALLOWED_GITHUB_ORGS without granting that permission, the call returns 403, the check fails closed, and every dashboard login is rejected. After changing an installed app's permissions, GitHub requires you to approve the new permission on each installation before it takes effect.

Linear (optional)

Open SWE listens for Linear comments that mention @openswe.

Create a webhook:

1. In Linear, go to Settings → API → Webhooks → New webhook
2. Fill in:
   • Label: open-swe
   • URL: https://<your-ngrok-url>/webhooks/linear — use the ngrok URL from step 2
   • Secret: generate with openssl rand -hex 32 — save this as LINEAR_WEBHOOK_SECRET
3. Under Data change events, enable Comments → Create only
4. Click Create webhook

Get your API key:

1. Go to Settings → API → Personal API keys → New API key
2. Name it open-swe, select All access, and copy the key
3. Save it as LINEAR_API_KEY

Configure team-to-repo mapping:

Open SWE routes Linear issues to GitHub repos based on the Linear team and project. Edit the mapping in agent/utils/linear_team_repo_map.py:

LINEAR_TEAM_TO_REPO = {
    "My Team": {"owner": "my-org", "name": "my-repo"},
    "Engineering": {
        "projects": {
            "backend": {"owner": "my-org", "name": "backend"},
            "frontend": {"owner": "my-org", "name": "frontend"},
        },
        "default": {"owner": "my-org", "name": "monorepo"},
    },
}

Users can also override the team/project mapping per-comment by including repo:owner/name (or a GitHub URL) in their @openswe comment. The mapping is used as a fallback when no repo is specified in the comment text.

Slack (optional)

Create a Slack App:

1. Go to api.slack.com/apps → Create New App → From a manifest
2. Copy the manifest below, replacing the two placeholder URLs:
   • Replace <your-provider-id> with the OAuth provider ID from step 3a
   • Replace <your-ngrok-url> with the backend URL from step 2 (or your deployed LangGraph/FastAPI URL in production)

Slack App Manifest

{
    "display_information": {
        "name": "Open SWE",
        "description": "Enables Open SWE to interact with your workspace",
        "background_color": "#000000"
    },
    "features": {
        "app_home": {
            "home_tab_enabled": false,
            "messages_tab_enabled": true,
            "messages_tab_read_only_enabled": false
        },
        "bot_user": {
            "display_name": "Open SWE",
            "always_online": true
        }
    },
    "oauth_config": {
        "redirect_urls": [
            "https://smith.langchain.com/host-oauth-callback/<your-provider-id>",
            "http://localhost:2024/dashboard/api/slack/callback"
        ],
        "scopes": {
            "bot": [
                "reactions:write",
                "app_mentions:read",
                "channels:history",
                "channels:read",
                "chat:write",
                "groups:history",
                "groups:read",
                "im:history",
                "im:read",
                "im:write",
                "mpim:history",
                "mpim:read",
                "team:read",
                "users:read",
                "users:read.email"
            ]
        }
    },
    "settings": {
        "event_subscriptions": {
            "request_url": "https://<your-ngrok-url>/webhooks/slack",
            "bot_events": [
                "app_mention",
                "message.im",
                "message.mpim"
            ]
        },
        "interactivity": {
            "is_enabled": true,
            "request_url": "https://<your-ngrok-url>/webhooks/slack/interactivity"
        },
        "org_deploy_enabled": false,
        "socket_mode_enabled": false,
        "token_rotation_enabled": false
    }
}

3. Install the app to your workspace and copy the Bot User OAuth Token (xoxb-...)

Slack URL checklist:

Both Slack URLs must point at the Open SWE backend that serves agent.webapp:app (locally, your ngrok URL forwarding to langgraph dev; in production, your LangGraph/FastAPI deployment URL), not the dashboard frontend URL.

• Event Subscriptions → Request URL: https://<your-backend-url>/webhooks/slack
• Interactivity & Shortcuts → Interactivity Request URL: https://<your-backend-url>/webhooks/slack/interactivity

Slack Block Kit option buttons only work when Interactivity is enabled and pointed at /webhooks/slack/interactivity.

Credentials you'll need:

• SLACK_BOT_TOKEN: the Bot User OAuth Token (xoxb-...)
• SLACK_SIGNING_SECRET: found under Basic Information → App Credentials
• SLACK_BOT_USER_ID: the bot's user ID (find it in Slack by clicking the bot's profile)
• SLACK_BOT_USERNAME: the bot's display name (e.g. open-swe)

Default repo:

Slack messages are routed to the Slack default repo (SLACK_REPO_OWNER/SLACK_REPO_NAME, falling back to DEFAULT_REPO_OWNER/DEFAULT_REPO_NAME — see step 6) unless the user specifies one with repo:owner/name in their message.

"Sign in with Slack" account linking (optional):

The dashboard can let a user link their Slack identity to their GitHub login via Slack OIDC ("Sign in with Slack"). This is what lets a Slack-triggered run resolve to the right GitHub user. To enable it:

1. The manifest above already registers the OIDC redirect (.../dashboard/api/slack/callback). Under OpenID Connect (or Sign in with Slack) make sure the openid, email, and profile user scopes are available.
2. From Basic Information → App Credentials, save the app's Client ID as SLACK_CLIENT_ID and Client Secret as SLACK_CLIENT_SECRET.
3. (Optional) Set SLACK_TEAM_ID (your workspace ID, T...) to restrict linking to a single workspace.

If SLACK_CLIENT_ID/SLACK_CLIENT_SECRET are unset, the "Sign in with Slack" link is simply disabled; the rest of Slack triggering still works.

6. Environment variables

Create a .env file in the project root. Below is the full list — only fill in the sections relevant to the triggers you configured.

# === LangSmith ===
LANGSMITH_API_KEY_PROD=""              # From step 4a
LANGCHAIN_TRACING_V2="true"
LANGCHAIN_PROJECT=""                   # LangSmith project name for traces
LANGSMITH_TENANT_ID_PROD=""           
LANGSMITH_TRACING_PROJECT_ID_PROD=""   # Fallback project ID for "View trace" links; graphs trace into the open-swe-agent / open-swe-review projects by name
LANGSMITH_URL_PROD="https://smith.langchain.com"                 

# === LLM ===
ANTHROPIC_API_KEY=""                   # Anthropic API key
OPENAI_API_KEY=""                      # OpenAI API key (when using openai: models)
GOOGLE_API_KEY=""                      # Google AI API key (when using google_genai: models)
FIREWORKS_API_KEY=""                   # Fireworks API key (when using fireworks: models)

# === GitHub App (required) ===
GITHUB_APP_ID=""                       # From step 3c
GITHUB_APP_PRIVATE_KEY="-----BEGIN RSA PRIVATE KEY-----
...
-----END RSA PRIVATE KEY-----
"
GITHUB_APP_INSTALLATION_ID=""          # From step 3d

# === GitHub Webhook (required) ===
GITHUB_WEBHOOK_SECRET=""               # The secret you generated in step 3b

# === Dashboard GitHub OAuth (required for the dashboard) ===
# Direct GitHub OAuth used by the dashboard login flow (not via LangSmith).
GITHUB_APP_CLIENT_ID=""                # From step 3c
GITHUB_APP_CLIENT_SECRET=""            # From step 3c

# === Agent-runtime GitHub OAuth via LangSmith (optional) ===
# Without these, all agent operations use the GitHub App's bot token.
# With these, each agent run authenticates as the triggering user.
GITHUB_OAUTH_PROVIDER_ID=""            # The provider ID from steps 3a / 4b
# Secret used to mint short-lived service JWTs that ask LangSmith to resolve a
# specific user's GitHub token. Needed for per-user token resolution in deployed mode.
X_SERVICE_AUTH_JWT_SECRET=""

# === Repo Allowlist (optional) ===
# Comma-separated list of GitHub orgs the agent is allowed to operate on.
# Also gates dashboard login to members of these orgs (requires the GitHub App's
# Organization -> Members: Read-only permission; without it, all dashboard logins are rejected).
# Leave empty to allow all orgs.
ALLOWED_GITHUB_ORGS=""                 # e.g. "my-org,my-other-org"
# Comma-separated list of specific owner/repo pairs the agent is allowed to operate on.
# For GitHub/Linear webhooks, a repo is allowed if its org is in ALLOWED_GITHUB_ORGS OR its owner/repo is in ALLOWED_GITHUB_REPOS.
# Slack mentions are not rejected from regex-inferred repository text; repository access is bounded by GitHub App installation permissions.
# Leave both empty to allow all repos.
ALLOWED_GITHUB_REPOS=""                # e.g. "some-user/their-repo,another-org/specific-repo"

# === Default Repository ===
# Used across all triggers when no repo is specified.
DEFAULT_REPO_OWNER=""                  # Default GitHub org (e.g. "my-org")
DEFAULT_REPO_NAME=""                   # Default GitHub repo (e.g. "my-repo")

# === Dashboard (required to run the web dashboard) ===
# Public URL that browsers use for /dashboard/api/* and OAuth callbacks.
# Use the FastAPI backend URL for local/cross-origin direct API calls.
# Use the dashboard frontend URL when a same-origin frontend rewrite proxies /dashboard/api/*.
# Its scheme drives cookie security: http:// => SameSite=Lax (local);
# https:// => Secure + SameSite=None (production).
DASHBOARD_API_BASE_URL="http://localhost:2024"
# Public base URL of the dashboard frontend (the ui/ app). Default post-login redirect.
DASHBOARD_BASE_URL="http://localhost:3000"
# HMAC secret for dashboard JWTs (session cookie and OAuth state).
DASHBOARD_JWT_SECRET=""                # Generate with: openssl rand -hex 32
# Comma-separated origins allowed for credentialed CORS and post-login redirects.
# Required whenever the frontend and API are on different origins — including local
# dev (UI :3000 -> API :2024 is cross-origin). CORS is only enabled when this is set.
DASHBOARD_ALLOWED_ORIGINS="http://localhost:3000"  # prod: your frontend origin(s)
# Comma-separated GitHub login or email allowlist for admin dashboard endpoints.
# Empty => nobody is an admin.
CONFIGURED_ADMINS=""                   # e.g. "alice,bob@my-org.com"
# URL of the LangGraph server the FastAPI side calls to trigger/stream runs.
# Defaults to http://localhost:2024 locally; set to your deployment URL in prod.
LANGGRAPH_URL="http://localhost:2024"

# === Linear (if using Linear trigger) ===
LINEAR_API_KEY=""                      # From step 5
LINEAR_WEBHOOK_SECRET=""               # From step 5

# === Slack (if using Slack trigger) ===
SLACK_BOT_TOKEN=""                     # From step 5
SLACK_BOT_USER_ID=""
SLACK_BOT_USERNAME=""
SLACK_SIGNING_SECRET=""
# Optional: Slack-specific default repo (falls back to DEFAULT_REPO_OWNER/NAME).
SLACK_REPO_OWNER=""
SLACK_REPO_NAME=""
# Optional: "Sign in with Slack" account linking (GitHub <-> Slack). See step 5.
SLACK_CLIENT_ID=""
SLACK_CLIENT_SECRET=""
SLACK_TEAM_ID=""                       # Optional; restrict linking to one workspace (T...)

# === Exa (optional — enables web search tool) ===
EXA_API_KEY=""                         # From https://dashboard.exa.ai

# === Reviewer / Analyzer (optional) ===
# LangSmith dataset where reviewer finding outcomes are recorded and read back by
# the analyzer. Defaults to "openswe-reviewer-outcomes" if unset.
REVIEWER_OUTCOMES_DATASET=""
# Single GitHub org whose members may trigger the agent on *public* repos.
# Empty => no public-repo gate (back-compat). Distinct from ALLOWED_GITHUB_ORGS.
PUBLIC_REPO_ORG_GATE=""

# === Sandbox (optional) ===
# Provider: langsmith (default), modal, daytona, runloop, or local. See CUSTOMIZATION.md.
SANDBOX_TYPE="langsmith"
DEFAULT_SANDBOX_SNAPSHOT_ID=""         # Required when SANDBOX_TYPE=langsmith (see step 4c)
DEFAULT_SANDBOX_SNAPSHOT_FS_CAPACITY_BYTES=""  # Root FS size in bytes (default: 32 GiB)
DEFAULT_SANDBOX_VCPUS=""               # vCPUs per sandbox (default: 4)
DEFAULT_SANDBOX_MEM_BYTES=""           # Memory in bytes per sandbox (default: 15 GiB)
DEFAULT_SANDBOX_IDLE_TTL_SECONDS=""    # Auto-stop after N seconds idle (default: 7200; 0 disables)
DEFAULT_SANDBOX_DELETE_AFTER_STOP_SECONDS=""  # Delete N seconds after stop (default: 86400; 0 disables)

# === Token Encryption ===
TOKEN_ENCRYPTION_KEY=""                # Generate with: openssl rand -base64 32
                                       # Supports key rotation: see "Rotating TOKEN_ENCRYPTION_KEY" below

Rotating TOKEN_ENCRYPTION_KEY

TOKEN_ENCRYPTION_KEY accepts either a single Fernet key or a comma- or newline-separated ordered list of keys, most-recent-first. New writes always encrypt under the first key; reads try every key in order. To rotate without invalidating already-stored GitHub tokens:

1. Generate a new key: openssl rand -base64 32.
2. Prepend it to TOKEN_ENCRYPTION_KEY, keeping the old key second:

   TOKEN_ENCRYPTION_KEY="<new_key>,<old_key>"
   

   Restart the server. New encryptions use <new_key>; existing ciphertexts still decrypt against <old_key>.
3. Let active threads cycle (each fresh OAuth flow re-encrypts under the new key). After every active thread has re-authed, drop the old key:

   TOKEN_ENCRYPTION_KEY="<new_key>"
   

   Any thread still holding ciphertext under <old_key> will fail to decrypt and the user will be re-prompted to authenticate — same UX as if the thread had never authed.

7. Start the backend

Make sure ngrok is still running from step 2, then start the backend in a second terminal:

make dev          # uv run langgraph dev
# or: uv run langgraph dev --no-browser

langgraph dev serves all three graphs (agent, reviewer, analyzer) and the FastAPI app (agent.webapp:app) together on http://localhost:2024. The FastAPI app owns both the webhooks and the dashboard API:

Endpoint	Purpose
POST /webhooks/github	GitHub issue/PR/comment webhooks
POST /webhooks/linear	Linear comment webhooks
GET /webhooks/linear	Linear webhook verification
POST /webhooks/slack	Slack event webhooks
POST /webhooks/slack/interactivity	Slack Block Kit button interactions
GET /webhooks/slack	Slack webhook verification
GET /dashboard/api/auth/login	Dashboard GitHub OAuth login
GET /dashboard/api/auth/callback	Dashboard GitHub OAuth callback (registered on the App in step 3b)
GET /dashboard/api/*	Dashboard API (profiles, team settings, repos, review styles, threads, …)
GET /health	Health check

make run (uvicorn agent.webapp:app --port 8000) serves the FastAPI app without the LangGraph runtime, on port 8000. The dashboard's Agents chat features call LangGraph, so for full local dev use make dev on :2024, not make run.

8. Run the dashboard (optional)

The dashboard is the web app in ui/. It's a static TanStack Start client that calls the FastAPI dashboard API from step 7. Run it in a third terminal:

cd ui
pnpm install
cat > .env <<'EOF'
VITE_DASHBOARD_API_BASE_URL="http://localhost:2024"
EOF
pnpm run dev          # vite dev --port 3000 -> http://localhost:3000

The dashboard needs VITE_DASHBOARD_API_BASE_URL in ui/.env pointing at the backend for local dev. The file is intentionally untracked because .env* files are gitignored.

The client calls ${VITE_DASHBOARD_API_BASE_URL}/dashboard/api/* with credentials: "include", so the backend's osw_session cookie rides along. Because the UI (:3000) and API (:2024) are different origins, the backend needs CORS enabled for the UI origin — set DASHBOARD_ALLOWED_ORIGINS="http://localhost:3000" (CORS is off unless this is set). Keep DASHBOARD_API_BASE_URL on an http:// URL locally so the cookie uses SameSite=Lax rather than Secure.

For the dashboard login to succeed, you need (from steps 3c / 6): GITHUB_APP_CLIENT_ID, GITHUB_APP_CLIENT_SECRET, DASHBOARD_JWT_SECRET, DASHBOARD_API_BASE_URL, DASHBOARD_BASE_URL, and DASHBOARD_ALLOWED_ORIGINS. To reach the admin pages (user mappings, etc.), add your GitHub login or email to CONFIGURED_ADMINS.

Other UI scripts: pnpm run build, pnpm run typecheck, pnpm run lint, pnpm run test.

9. Verify it works

GitHub

1. Go to any issue in a repository where the app is installed
2. Create or comment on an issue with: @openswe what files are in this repo?
3. You should see:
   • A 👀 reaction on your comment within a few seconds
   • A new run in your LangSmith project
   • The agent replies with a comment on the issue

Linear

1. Go to any Linear issue in a team you configured in LINEAR_TEAM_TO_REPO
2. Add a comment: @openswe what files are in this repo?
3. You should see:
   • A 👀 reaction on your comment within a few seconds
   • A new run in your LangSmith project
   • The agent replies with a comment on the issue

Slack

1. In any channel where the bot is invited, start a thread
2. Mention the bot: @open-swe what's in the repo?
3. You should see a reply in the thread with the agent's response.

Dashboard

1. With the backend (step 7) and UI (step 8) both running, open http://localhost:3000
2. Click Sign in with GitHub — you'll be sent through the GitHub OAuth flow and back to the dashboard
3. You should land logged-in and be able to see your profile/settings. If your GitHub login or email is in CONFIGURED_ADMINS, the Admin pages (e.g. User mappings) are available.

10. Production deployment

Production runs the backend and dashboard separately.

Backend — deploy on LangGraph Cloud / Platform:

1. Push your code to a GitHub repository
2. Connect the repo to LangGraph Cloud
3. Set all environment variables from step 6 in the deployment config. Set DASHBOARD_BASE_URL and LANGGRAPH_URL to your production URLs (all https://). Set DASHBOARD_API_BASE_URL to the URL browsers use for dashboard API requests and OAuth callbacks: either the backend URL for direct cross-origin calls, or the dashboard/Vercel URL when a same-origin rewrite proxies /dashboard/api/*.
4. Update your webhook URLs (Linear, Slack, GitHub App) and the GitHub App / Slack OAuth callback URLs to your production URLs (replace the ngrok / localhost values). The dashboard GitHub App callback must be <DASHBOARD_API_BASE_URL>/dashboard/api/auth/callback.

The langgraph.json at the project root defines the graphs and the custom HTTP app:

{
  "graphs": {
    "agent": "agent.server:traced_agent",
    "reviewer": "agent.reviewer:traced_reviewer_agent",
    "analyzer": "agent.analyzer:traced_analyzer",
    "chat": "agent.chat:traced_chat_agent",
    "scheduler": "agent.scheduler:get_scheduler",
    "ci_monitor": "agent.ci_monitor:get_ci_monitor"
  },
  "http": {
    "app": "agent.webapp:app"
  }
}

Dashboard — the ui/ app deploys to Vercel. The recommended production setup uses same-origin requests to /dashboard/api/* (leave VITE_DASHBOARD_API_BASE_URL empty), and ui/vercel.json rewrites those to the hosted LangGraph deployment. In this mode, set both DASHBOARD_API_BASE_URL and the GitHub App dashboard callback URL to the Vercel/dashboard origin (for example, https://your-dashboard.vercel.app/dashboard/api/auth/callback). The OAuth callback response then sets the osw_session cookie on the dashboard host, and later same-origin /dashboard/api/* requests include it. Update the rewrite destination in ui/vercel.json to your own LangGraph deployment URL.

Alternatively, you can run the dashboard as a direct cross-origin client: set VITE_DASHBOARD_API_BASE_URL to the hosted backend origin, set DASHBOARD_API_BASE_URL to that same backend origin, and include the dashboard origin in DASHBOARD_ALLOWED_ORIGINS.

Managed LangGraph Cloud + Vercel — the production env triad

The production runtime is managed LangGraph Cloud (backend) + Vercel (UI), not a self-hosted langgraph dev process. Get these three right, in the recommended same-origin setup:

Variable	Where	Value	Why
LANGGRAPH_URL	backend (LangGraph Cloud)	the deployment's own https://…us.langgraph.app URL	The server-side langgraph_client() (thread sidebar + run creation) connects here. It defaults to http://localhost:2024 for local dev; on managed it must be set or every dashboard/thread call ConnectErrors.
DASHBOARD_BASE_URL	backend	the dashboard origin, https://…	Where token-free settings links point.
DASHBOARD_API_BASE_URL	backend	the same dashboard/Vercel origin, https://…	Builds the OAuth redirect_uri and drives the session-cookie Secure; SameSite=None flags. Must include the https:// scheme — a schemeless value yields a schemeless redirect_uri and GitHub rejects login with "redirect_uri not associated with this application." (The server now coerces a schemeless value to https:// as a backstop, but set it explicitly.)
VITE_DASHBOARD_API_BASE_URL	UI build (Vercel)	empty	Leave empty so the SPA calls relative /dashboard/api/* same-origin; ui/vercel.json rewrites those to the backend so the osw_session cookie rides along.

ui/vercel.json's rewrite destination must be the stable LangGraph deployment URL for the target environment (e.g. https://<deployment>-<hash>.us.langgraph.app) — a per-deployment alias that is stable across revisions. Never point it at an immutable per-deploy / preview URL. Vercel does not interpolate env vars into vercel.json rewrites, so this hostname is committed per Vercel project; set the dev project's rewrite to the dev deployment and the prod project's to the prod deployment.

Always start dashboard login on the stable alias / custom domain, not on an immutable per-deploy Vercel URL. The OAuth state cookie (osw_oauth_state) is intentionally host-only (a Domain cookie is unsafe across *.vercel.app, which is on the public-suffix list). If login starts on one host and GitHub redirects back to another, the cookie is dropped and the callback fails with "oauth state mismatch."

On managed the backend runs as multiple replicas. In-process caches that must stay coherent across replicas (notably the GitHub⇄work-email user mapping) are refreshed from the durable Store on the webhook hot paths (Slack and GitHub) before they are read.

Troubleshooting

Webhook not receiving events

• Verify ngrok is running and the URL matches what's configured in GitHub/Linear/Slack
• Check the ngrok web inspector at http://localhost:4040 for incoming requests
• Ensure you enabled the correct event types (Comments → Create for Linear, app_mention for Slack, Issues + Issue comment for GitHub)
• Webhook secrets are required — if GITHUB_WEBHOOK_SECRET, LINEAR_WEBHOOK_SECRET, or SLACK_SIGNING_SECRET is not set, all requests to that endpoint will be rejected with 401

GitHub authentication errors

• Verify GITHUB_APP_ID, GITHUB_APP_PRIVATE_KEY, and GITHUB_APP_INSTALLATION_ID are set correctly
• Ensure the GitHub App is installed on the target repositories
• Check that the private key includes the full -----BEGIN RSA PRIVATE KEY----- and -----END RSA PRIVATE KEY----- lines

Dashboard login fails or won't stay logged in

• 500 GITHUB_APP_CLIENT_ID not configured (or client secret): set GITHUB_APP_CLIENT_ID / GITHUB_APP_CLIENT_SECRET (step 3c) and DASHBOARD_JWT_SECRET.
• OAuth redirect_uri mismatch / "redirect_uri not associated with this application": the GitHub App must list <DASHBOARD_API_BASE_URL>/dashboard/api/auth/callback as a callback URL (step 3b). Locally that's http://localhost:2024/dashboard/api/auth/callback. On managed, a common cause is a schemeless DASHBOARD_API_BASE_URL (e.g. dash.example.com instead of https://dash.example.com), which produces a schemeless redirect_uri; always set the full https:// URL.
• "oauth state mismatch" after the GitHub redirect: login was started on a different host than the one GitHub redirected back to (typically an immutable per-deploy Vercel URL vs the stable alias). The osw_oauth_state cookie is host-only by design, so it isn't presented to the other host. Always start login on the stable alias / custom domain.
• Login redirects but the session doesn't stick: this is almost always a cookie problem. Locally, keep DASHBOARD_API_BASE_URL on http:// (so cookies are SameSite=Lax); in prod use https:// for both API and frontend and add the frontend origin to DASHBOARD_ALLOWED_ORIGINS.
• Login rejected with an org error: ALLOWED_GITHUB_ORGS gates dashboard login (and requires the App's Organization → Members: Read-only permission). See step 5.
• Admin pages 403: add your GitHub login or email to CONFIGURED_ADMINS.

Dashboard UI can't reach the backend

• Confirm the backend is running via make dev on :2024 (not make run on :8000).
• Confirm ui/.env has VITE_DASHBOARD_API_BASE_URL=http://localhost:2024. If it's empty, the UI falls back to relative /dashboard/api/*, which only works behind the Vercel rewrite, not in local dev.

Sandbox creation failures

• Verify LANGSMITH_API_KEY_PROD is set and valid
• Check LangSmith sandbox quotas in your workspace settings
• If the server refuses to start with DEFAULT_SANDBOX_SNAPSHOT_ID must be set, build a snapshot (see step 4c) and export its UUID
• If you see Failed to create sandbox from snapshot '<id>', confirm the snapshot exists in your workspace and has status ready
• If you get a 403 Forbidden error on the sandbox endpoints, your LangSmith workspace may not have sandbox access enabled — contact LangSmith support

Agent not responding to comments

• For GitHub: ensure the comment or issue contains @openswe (case-insensitive), and the commenter has a user mapping (Admin → User mappings; see "Configure triggering surfaces"). Add any missing user with Add / update in that section.
• For Linear: ensure the comment contains @openswe (case-insensitive)
• For Slack: ensure the bot is invited to the channel and the message is an @mention
• Check server logs for webhook processing errors

Token encryption errors

• Ensure TOKEN_ENCRYPTION_KEY is set (generate with openssl rand -base64 32)
• The key must be a valid 32-byte Fernet-compatible base64 string
• For key rotation, TOKEN_ENCRYPTION_KEY may be a comma- or newline-separated list of keys (most-recent-first). See "Rotating TOKEN_ENCRYPTION_KEY" above.