Remove the push-to-main trigger from .github/workflows/deploy.yaml so merges
no longer deploy automatically; deploys now run only via the Actions "Run
workflow" button (workflow_dispatch). No job content, permissions, or
reusable-workflow inputs changed. README and the auth deploy runbook updated
to match.
The README described the sh-mcp-auth stack's contents but never
documented that the repo root is a CDK app or what cdk.json is.
Add an Infrastructure (CDK app) section covering the cdk.json app
config, the infra/bin/app.ts entry point, the stacks, deploy-time
context inputs, and synth/deploy commands, and list cdk.json and
infra/ in the layout so the IaC component is discoverable.
* Phase 2a: Cognito auth substrate (CDK) + pre-token & group-sync Lambdas
Stands up the real AWS auth broker the servers already validate against
(SH_MCP_ENV=aws), surface-agnostic. Nothing deployed yet (gated on Google
secrets); CI synthesizes the stack.
infra/ — root CDK app, stack sh-mcp-auth:
- Cognito user pool, ESSENTIALS feature plan (required for the V2 pre-token
trigger), Google external OIDC IdP (client_id/secret resolved from Secrets
Manager at deploy via CFN dynamic reference, never inlined).
- Resource servers + per-tier app clients whose AllowedOAuthScopes ARE the
trust-tier boundary: ops=(read,tasks), exec=(ops+gmail/calendar, NO finance),
finance=(finance:read ONLY, 15-min access TTL). offline refresh 30d.
- Cognito groups sh-mcp-ops/-assistant/-finance/-admin.
- sync-state + deny-list DynamoDB tables (overrideLogicalId pinned so a future
refactor cannot replace+drop them; deny-list TTL attr 'expiresAt').
- Least-priv IAM (no wildcard action/resource; Google SA secret grant scoped to
the one secret), arm64 Lambdas, explicit 60-day log groups, alarms on the
seahaven-alarm-topics CMK (ALARM-state actions only, two-alarm group-sync).
auth/pre-token-gen — SUPPRESS-ONLY V2 Lambda. Maps Cognito group entitlement to
scopesToSuppress; NEVER scopesToAdd a tier scope (AllowedOAuthScopes stays the
ceiling). Reads last_successful_sync; fail-closed to base ops:read when stale.
auth/group-sync — mirrors Google Group membership into Cognito groups every 5 min
(jose-signed SA JWT -> Directory API, no googleapis dep); writes the freshness
marker ONLY on full success so a partial failure keeps the pre-token Lambda
failing closed.
37 new tests (suppress-only policy, fail-closed, reconcile diff, 16 CDK
assertions incl. Essentials/V2/per-client-scope/no-wildcard-IAM). 448 total pass;
tsc -b + infra typecheck + cdk synth + prettier clean; CI run-cdk-synth re-enabled.
App-client callback URLs are a context placeholder pending the surface decision.
Confluence map (1540098) + project memory updates owed once this deploys.
* Phase 2a: harden auth substrate per security-review + IAM cross-review
Both mandatory gates run on the 2a diff. GPT-4.1 IAM/Lambda cross-review: the
suppress-only invariant is now an executable fail-closed guard (a future edit
that sets scopesToAdd throws → no token minted). /sh-security-review fan-out +
proof-or-kill verifier: PASS (0 confirmed critical/high). The verifier refuted
the two "high" candidates (the email-case revocation "bypass" is symmetric — the
add path uses the same lowercasing filter, so an un-removable user could never
have been added; the empty-directory purge is a non-200 throw → stale marker →
fail closed). Three confirmed findings remediated:
- C2 (deny-list was inert): the sh-mcp-deny-list table was provisioned and
documented as "hard revocation" but no code read it. The pre-token Lambda now
reads it on every mint (DENY_LIST_TABLE env + grantReadData) and strips a
deny-listed sub to NO tier scopes, ahead of the next group sync. Fail-OPEN on
a DDB read error (logs deny_list_read_failed) so a blip can't lock everyone
out — group membership + its fail-closed 30-min window stay authoritative.
- C5 (finance 30-day refresh nullified the 15-min access TTL): refresh window is
now per-tier; finance caps at 8h, ops/exec keep 30d.
- C7 (nested Google-group members silently dropped): listGroupMembers now sets
includeDerivedMembership and skips non-USER rows, honoring the documented
"nested resolved" contract instead of pushing a phantom group address.
Also corrects the sync.ts comment that overstated fail-closed as instantaneous
(it is bounded by MAX_SYNC_AGE_MS). +8 tests (deny-list unit, hard-revocation
handler path, finance refresh window, deny-list env wiring); 456 pass. tsc -b,
cdk synth, prettier, eslint all clean.
Design doc for the Sea Haven MCP platform that replaces seahaven-slack-bot
and exec-aide: trust-tiered MCP servers, Google-SSO via a Cognito broker,
TypeScript monorepo. Cross-review (cross_reviewer/GPT-4.1) folded in.
Status: planning only, nothing built.
