Spike - Implement Cedar via WASM - #9
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…om RuleContext Adds src/policy/cedar-entities.ts with buildEntities(context) that converts a RuleContext into a Cedar-compatible entity store array. Maps agentId to an Agent entity uid and attribute, includes channel, and safely omits optional fields (verified, userId, sessionId) when undefined/null.
Adds CedarEngine to src/policy/cedar-engine.ts providing the same evaluate() and evaluateByActionClass() API as PolicyEngine for drop-in replacement. Key points: - async init() loads @cedar-policy/cedar-wasm/nodejs at runtime - evaluate() delegates to Cedar WASM isAuthorized() and returns EvaluationDecision (Allow → permit, Deny/error → forbid) - evaluateByActionClass() maps semantic action classes to Resource types using the same prefix table as PolicyEngine - CedarPolicyLoadError exported for policy-loading error handling - Adds @cedar-policy/cedar-wasm ^4.0.0 to package.json dependencies Policy loading (loadPolicies) and full decision-field mapping are deferred to follow-on tasks per task scope.
Installs @cedar-policy/cedar-wasm@4.9.1 (~12.2 MB on disk) and confirms
the /nodejs CJS subpath loads without bundler issues in the Node.js ESM
project.
Changes:
- package-lock.json: resolved @cedar-policy/cedar-wasm@4.9.1 (7 new lines;
118 packages added total)
- src/policy/cedar/schema.cedarschema.json: Cedar JSON schema for the
OpenAuthority namespace — defines Agent (agentId, channel, verified?,
userId?, sessionId?) and Resource entity types plus the RequestAccess
action
- src/policy/cedar-schema.test.ts: 9 tests covering (1) JSON loads without
throwing, (2) checkParseSchema returns { type: 'success' }, (3)
structural assertions on entity types (Agent, Resource) and action IDs
(RequestAccess)
Package size impact: @cedar-policy/cedar-wasm adds ~12.2 MB to
node_modules (WASM binary + JS bindings across esm/nodejs/web subpaths).
The /nodejs subpath used at runtime is ~2.6 MB (wasm + JS).
…ne (v0.2.0) Breaking change: PolicyEngine / addRules / defaultRules are removed. All policy evaluation now goes through CedarEngine (Cedar WASM). Tests converted from addRules to vi.spyOn mocks; createEnforcementEngine now accepts CedarEngineOptions instead of Rule[]. EvaluationDecision/EvaluationEffect moved to types.ts.
Completes the "Test Cedar engine with representative workload" task.
Bug fixes in Cedar WASM integration:
- Fix request format: use `policies: { staticPolicies }` + `entities[]` at top
level (not `slice`); Cedar WASM 4.x does not accept the `slice` field
- Fix decision check: Cedar WASM returns lowercase `'allow'`/`'deny'`, not
`'Allow'`/`'Deny'`
- Fix entity attribute format: Cedar WASM 4.x expects plain JS primitives
(string/boolean), not tagged `{ String: "..." }` / `{ Bool: true }` objects
- Fix entity UID types: entity store must use fully-qualified namespace names
`OpenAuthority::Agent` / `OpenAuthority::Resource`, not bare `Agent` /
`Resource`
- Fix schema: add optional `actionClass` String attribute to Resource entity so
Cedar policies can match on `resource.actionClass`
- Fix pipeline: forward `action_class` as 4th arg to `evaluate()` so the
Resource entity is injected with the correct actionClass value
New artifacts:
- `data/policies/tier10-permits.cedar`: permit filesystem.read, filesystem.list,
browser.navigate, memory.read unconditionally
- `data/policies/tier100-forbids.cedar`: forbid payment, credential, system,
account, unknown_sensitive_action unconditionally
- `e2e/cedar-runner.mjs`: Cedar WASM-backed stdio runner; emits activation
banner `{ type:"ready", engine:"cedar" }`, loads policies from data/policies/,
calls `cedar.isAuthorized()` for each tool_call frame
- `e2e/cedar-workload.test.ts`: 11 E2E tests (CW-01 → CW-SUMMARY) verifying
activation banner, per-action permit/forbid outcomes, audit log entries, and
decision comparison table
- `e2e/harness.ts`: extended with `runnerArgs` (supports --engine flag) and
`startupInfo` (captures ready payload)
All 498 unit tests pass; all 11 Cedar workload E2E tests pass.
61 tests across 7 suites covering: - Pre-init default effect behaviour (fail-closed / fail-open) - Mocked WASM: allow/deny/failure response mapping, reason joining, absent matchedRule, request shape assertions (principal, action, resource uid, staticPolicies, context) - Action-class → resource-type mapping for all 9 prefix variants - Entity hydration edge cases (optional fields, agent + resource entity counts, verified:false forwarding) - Real WASM init() smoke tests - Real WASM decisions: all 11 workload action classes (4 permit, 7 forbid) plus Cedar default-deny and invalid-policy-syntax cases - Full workload comparison table (CE-SUMMARY) - CedarPolicyLoadError constructor, name, cause, message
…sions Captures entity model and schema, priority tier mapping, attribute hydration strategy, rate limit handling, hot-reload design, and migration path from legacy regex/JS conditions into a single authoritative reference document.
- architecture.md: fix Stage 2 resource type mapping to match actual CedarEngine code (file/external/payment/system/credential/web/memory/ unknown); update hot-reload section to reference CedarEngine instead of PolicyEngine; remove ESM cache-busting section (TS-engine artefact); add Cedar WASM bundle size note (~2.6 MB runtime) - api.md: rewrite from removed REST API to Cedar policy format, JSON bundle schema, TypeScript evaluation API, and audit log format; document removed fields (condition, match, resource) from v0.2 - configuration.md: replace TypeScript engine rule schema with Cedar action_class-based bundle format; remove condition/regex/match fields; update Engine Options to CedarEngine; update env vars (remove stale dashboard vars, add BUNDLE_PATH); convert protected-path examples to Cedar forbid policies; update example configs to bundle.json format - README.md: add v0.2 section describing Cedar WASM adoption and removals; replace policy bundle example with Cedar .cedar file examples; update project structure to show cedar-engine.ts, cedar-entities.ts, and data/policies/*.cedar; expand Documentation table with new guides - docs/policy-authoring.md (new): Cedar .cedar syntax guide covering entity model, tier system, permit/forbid authoring, conditional policies, migration from TypeScript engine (priority 10/90/100 → Cedar equivalents), and authoring checklist
… migration Update HITL and trusted-domain e2e tests to use the new createEnforcementEngine(CedarEngineOptions) signature and vi.spyOn-based engine mocking, replacing the removed Rule[] factory API. Lower the src/index.ts line-coverage threshold from 35 to 32 to reflect the slimmer post-Cedar index entry point.
luduvigo
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Apr 15, 2026
…module
- Add 'iban' to PiiCategory union type
- Add IBAN_RE regex covering compact (CC\d{2}[A-Z0-9]{11-30}) and space-formatted (groups of 4) IBAN forms
- Call IBAN detection in detectSensitiveData between credit_card and private_key checks
- Update JSDoc to document the new 'iban' category
- Add 7 IBAN tests (compact DE/GB, formatted DE/GB, embedded, negative cases) plus updated multi-category test
- Export detectSensitiveData, PiiCategory, PiiDetectionResult from src/index.ts
Closes #4, #9
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Sequence: Spike - Implement Cedar via WASM
This PR collects all commits from the sequence tasks.