> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase21-session03-authoritative-claude-usage-oauth/implementation-notes.md). # Implementation Notes **Session ID**: `phase21-session03-authoritative-claude-usage-oauth` **Started**: 2026-06-02 14:54 **Last Updated**: 2026-06-02 15:13 *** ## Session Progress | Metric | Value | | ------------------- | ------- | | Tasks Completed | 22 / 22 | | Estimated Remaining | 0 hours | | Blockers | 0 | *** ## Task Log ### 2026-06-02 - Session Start **Environment verified**: * [x] Prerequisites confirmed * [x] Tools available * [x] Directory structure ready **Source and prerequisite assumptions**: * v2.3 reference checkout exists at `/home/aiwithapex/projects/claudeos/claude-os-v2.3/`. * Required Bun version is available: `bun 1.3.14`. * No live Claude OAuth credential or network access is required for tests. * OAuth behavior is implemented with mocks for file, Keychain, CLI, fetch, and timeout paths. * The OAuth endpoint is optional and all credential, CLI, network, status, timeout, and parse failures must return `null`. *** ### Task T001 - Record source-map, prerequisite, and no-live-credential assumptions **Started**: 2026-06-02 14:54 **Completed**: 2026-06-02 14:54 **Duration**: 1 minute **Notes**: * Captured required v2.3 source checkout, Bun prerequisite, and no-live-credential test boundary. * Confirmed implementation will use mocked credential, Keychain, CLI, and fetch paths. **Files Changed**: * `.spec_system/specs/phase21-session03-authoritative-claude-usage-oauth/implementation-notes.md` - Added implementation baseline and assumptions. *** ### Task T002 - Create OAuth privacy, redaction, and fallback baseline **Started**: 2026-06-02 14:54 **Completed**: 2026-06-02 14:54 **Duration**: 1 minute **Notes**: * Documented script-only OAuth boundaries, browser-safe payload limits, redaction requirements, and null-fallback behavior. * Kept security baseline aligned with the session's no-live-credential testing requirement. **Files Changed**: * `.spec_system/specs/phase21-session03-authoritative-claude-usage-oauth/security-compliance.md` - Added OAuth privacy, redaction, and fallback baseline. *** ### Task T003 - Create Claude OAuth usage module contract **Started**: 2026-06-02 14:55 **Completed**: 2026-06-02 14:56 **Duration**: 1 minute **Notes**: * Added the script-only OAuth helper module with credential, authoritative usage, source, and dependency types. * Added constants for the usage endpoint, timeout budgets, credential service, and credential path resolution. **Files Changed**: * `scripts/lib/claude-oauth-usage.ts` - Created typed OAuth helper contract and dependency seams. *** ### Task T004 - Implement file and macOS Keychain credential readers **Started**: 2026-06-02 14:56 **Completed**: 2026-06-02 14:59 **Duration**: 3 minutes **Notes**: * Added safe credential payload parsing for nested `claudeAiOauth`, direct credential objects, JSON strings, and raw token strings. * Added file-first credential loading and macOS Keychain fallback using `Bun.spawn` argument arrays. * Added timeout cleanup and process cleanup for spawned Keychain reads. **Files Changed**: * `scripts/lib/claude-oauth-usage.ts` - Implemented credential validators, file read path, Keychain read path, and spawn timeout helper. **BQC Fixes**: * Resource cleanup: Spawned Keychain processes are killed on timeout and in `finally` cleanup (`scripts/lib/claude-oauth-usage.ts`). * Failure path completeness: File, Keychain, parse, spawn, and timeout failures all return `null` (`scripts/lib/claude-oauth-usage.ts`). * Trust boundary enforcement: Credential payloads are schema-validated before use (`scripts/lib/claude-oauth-usage.ts`). *** ### Task T005 - Implement Claude CLI version detection **Started**: 2026-06-02 14:59 **Completed**: 2026-06-02 15:00 **Duration**: 1 minute **Notes**: * Added `claude --version` detection through the spawn timeout helper. * Added safe semver-like output parsing and `null` fallback for missing, timed out, or invalid CLI output. **Files Changed**: * `scripts/lib/claude-oauth-usage.ts` - Implemented CLI version detection and parser. **BQC Fixes**: * Resource cleanup: CLI spawn uses the same timeout and process cleanup helper as Keychain reads (`scripts/lib/claude-oauth-usage.ts`). * Failure path completeness: Missing CLI, invalid output, spawn failure, and timeout all return `null` (`scripts/lib/claude-oauth-usage.ts`). *** ### Task T006 - Implement OAuth usage fetch **Started**: 2026-06-02 15:00 **Completed**: 2026-06-02 15:04 **Duration**: 4 minutes **Notes**: * Added `fetchClaudeOAuthUsage` with credential and CLI prerequisites, six-second abort timeout, and contained authorization headers. * Added response validation for safe percentage windows, reset timestamps, fetched timestamp, source, extra usage, and safe plan-tier labels. * Kept non-200, timeout, network, and parse failures as `null` so aggregate estimates remain available. **Files Changed**: * `scripts/lib/claude-oauth-usage.ts` - Implemented OAuth fetch, timeout, and bounded response parser. **BQC Fixes**: * External dependency resilience: OAuth fetch uses an abort timeout and returns `null` on failure (`scripts/lib/claude-oauth-usage.ts`). * Error information boundaries: Token-bearing headers are never logged or returned from the fetch helper (`scripts/lib/claude-oauth-usage.ts`). * Contract alignment: Endpoint payload is schema-validated before projection (`scripts/lib/claude-oauth-usage.ts`). *** ### Task T007 - Extend Claude window builder **Started**: 2026-06-02 15:04 **Completed**: 2026-06-02 15:07 **Duration**: 3 minutes **Notes**: * Added optional authoritative usage input to `buildClaudeWindow`. * Added top-level and per-window `source`, `resetsAt`, and bounded `authoritative` output. * Preserved local-log estimate fields when authoritative window data is unavailable. **Files Changed**: * `scripts/lib/usage-assembly.ts` - Added authoritative Claude usage projection and estimate fallback handling. **BQC Fixes**: * Contract alignment: New fields are additive and legacy count/cap fields are preserved (`scripts/lib/usage-assembly.ts`). * Failure path completeness: Missing authoritative input leaves all windows as estimates (`scripts/lib/usage-assembly.ts`). *** ### Task T008 - Extend browser live-data contract **Started**: 2026-06-02 15:07 **Completed**: 2026-06-02 15:09 **Duration**: 2 minutes **Notes**: * Added browser-side Claude usage source, reset, authoritative, and per-window types. * Kept the contract credential-free by modeling only safe percentages, timestamps, source labels, and plan-tier labels. **Files Changed**: * `src/lib/live-data-types.ts` - Added dedicated Claude usage window and authoritative payload types. **BQC Fixes**: * Contract alignment: Browser types now match the additive script output without importing script-only credential types (`src/lib/live-data-types.ts`). *** ### Task T009 - Update live-data validation **Started**: 2026-06-02 15:04 **Completed**: 2026-06-02 15:05 **Duration**: 1 minute **Notes**: * Added targeted Claude usage validation instead of generic pass-through. * Bounded source, reset timestamp, authoritative percentage, extra usage, windows, and family breakdown fields. * Preserved legacy usage values while constructing a known safe shape that excludes credential-looking data. **Files Changed**: * `src/lib/validate-live-data.ts` - Added Claude usage source, authoritative payload, window, and legacy validator logic. **BQC Fixes**: * Trust boundary enforcement: Browser data crossing the generated-data boundary is validated into a known safe shape (`src/lib/validate-live-data.ts`). * Error information boundaries: Token-shaped strings and raw credential fields are not preserved in Claude usage output (`src/lib/validate-live-data.ts`). * Contract alignment: Legacy Claude payloads remain readable while new additive fields validate (`src/lib/validate-live-data.ts`). *** ### Task T010 - Extend free-form script redaction **Started**: 2026-06-02 15:05 **Completed**: 2026-06-02 15:06 **Duration**: 1 minute **Notes**: * Added Claude OAuth token prefix redaction and access/refresh/authorization key-value redaction. * Preserved existing token count and usage accounting behavior by limiting the new patterns to credential-shaped strings. **Files Changed**: * `scripts/lib/ai-runtime/providers.ts` - Extended `redactSensitiveText` for Claude OAuth token shapes. **BQC Fixes**: * Error information boundaries: Representative Claude OAuth token strings are redacted from free-form runtime text (`scripts/lib/ai-runtime/providers.ts`). *** ### Task T011 - Wire authoritative usage fetch into aggregate orchestration **Started**: 2026-06-02 15:06 **Completed**: 2026-06-02 15:06 **Duration**: 1 minute **Notes**: * Added an injectable aggregate dependency for Claude OAuth usage. * Fetched authoritative usage after local Claude auth detection and before window projection. * Logged only safe source, fetched timestamp, percentages, and presence booleans. **Files Changed**: * `scripts/lib/aggregate-orchestration.ts` - Wired OAuth usage fetch into aggregate window construction. **BQC Fixes**: * External dependency resilience: The fetch dependency returns `null` on all remote failures and aggregate continues with estimates (`scripts/lib/aggregate-orchestration.ts`). * Error information boundaries: Aggregate logs include no credential-bearing values (`scripts/lib/aggregate-orchestration.ts`). *** ### Task T012 - Update safe generated example data **Started**: 2026-06-02 15:06 **Completed**: 2026-06-02 15:07 **Duration**: 1 minute **Notes**: * Replaced the null Claude usage example with a sanitized estimate payload. * Included source labels, reset placeholders, bounded windows, and `authoritative: null`. **Files Changed**: * `src/data/live-data.example.json` - Added safe estimate-compatible Claude usage fields. **BQC Fixes**: * Contract alignment: Example data now exercises the additive Claude usage fields without credential data (`src/data/live-data.example.json`). *** ### Task T013 - Update usage-panel view models **Started**: 2026-06-02 15:07 **Completed**: 2026-06-02 15:08 **Duration**: 1 minute **Notes**: * Added Claude source and reset-label view-model fields. * Defaulted missing or invalid source data to estimate on each live-data re-entry. * Converted placeholder reset labels to ASCII `--` until validated reset timestamps are available. **Files Changed**: * `src/components/usage-panel.tsx` - Added Claude source and reset view-model handling. **BQC Fixes**: * State freshness on re-entry: Source and reset labels are recomputed from current validated live data (`src/components/usage-panel.tsx`). * Accessibility and platform compliance: Source descriptions are prepared for accessible rendering (`src/components/usage-panel.tsx`). *** ### Task T014 - Render Claude live versus estimate badge and reset labels **Started**: 2026-06-02 15:08 **Completed**: 2026-06-02 15:08 **Duration**: 1 minute **Notes**: * Rendered a Claude service-level Live/Estimate badge and per-window source chips. * Kept badges in wrapping flex rows to avoid compact layout overflow. * Preserved the existing clock-based reset label display. **Files Changed**: * `src/components/usage-panel.tsx` - Added accessible source badges and wrapping badge layout. **BQC Fixes**: * Accessibility and platform compliance: Source labels include accessible descriptions (`src/components/usage-panel.tsx`). * State freshness on re-entry: Rendered labels consume recomputed view-model values (`src/components/usage-panel.tsx`). *** ### Task T015 - Add OAuth helper tests **Started**: 2026-06-02 15:08 **Completed**: 2026-06-02 15:09 **Duration**: 1 minute **Notes**: * Added tests for nested/direct file credentials, raw/JSON Keychain credentials, missing and malformed credentials, CLI version detection, non-200 responses, timeout, malformed payloads, and token non-exposure. * Used dependency injection and mocked streams instead of real credential, Keychain, CLI, or network access. **Files Changed**: * `scripts/lib/__tests__/claude-oauth-usage.test.ts` - Added OAuth helper coverage. **BQC Fixes**: * Trust boundary enforcement: Tests assert invalid credential and usage payloads return `null` (`scripts/lib/__tests__/claude-oauth-usage.test.ts`). * External dependency resilience: Tests cover missing CLI, non-200, throw, and timeout fallback (`scripts/lib/__tests__/claude-oauth-usage.test.ts`). * Error information boundaries: Tests assert returned authoritative data does not contain OAuth token values (`scripts/lib/__tests__/claude-oauth-usage.test.ts`). *** ### Task T016 - Add Claude window projection tests **Started**: 2026-06-02 15:09 **Completed**: 2026-06-02 15:09 **Duration**: 1 minute **Notes**: * Added coverage for OAuth source switching, reset propagation, and estimate fallback. * Tightened `buildClaudeWindow` to copy only known authoritative fields before emitting generated data. **Files Changed**: * `scripts/lib/usage-assembly.ts` - Added authoritative payload bounding in projection. * `scripts/lib/__tests__/usage-assembly.test.ts` - Added Claude authoritative projection tests. **BQC Fixes**: * Error information boundaries: Projection tests prove token-shaped unknown fields are not emitted (`scripts/lib/__tests__/usage-assembly.test.ts`). * Contract alignment: Tests prove top-level and per-window source labels align with authoritative data (`scripts/lib/__tests__/usage-assembly.test.ts`). *** ### Task T017 - Add aggregate orchestration and redaction regression tests **Started**: 2026-06-02 15:09 **Completed**: 2026-06-02 15:10 **Duration**: 1 minute **Notes**: * Added an aggregate helper for testable Claude authoritative usage wiring and used it in the runtime path. * Added aggregate tests for authoritative source and null fallback. * Added redaction tests for Claude OAuth token strings and token-count preservation. **Files Changed**: * `scripts/lib/aggregate-orchestration.ts` - Added `buildAggregateClaudeWindow` and used it in aggregate construction. * `scripts/lib/__tests__/aggregate-orchestration.test.ts` - Added authoritative/null wiring tests. * `scripts/lib/__tests__/ai-runtime-providers.test.ts` - Added Claude OAuth redaction regression test. **BQC Fixes**: * Contract alignment: Aggregate tests prove authoritative data reaches the emitted Claude window only when present (`scripts/lib/__tests__/aggregate-orchestration.test.ts`). * Error information boundaries: Redaction tests prove Claude OAuth tokens are filtered while token counts remain intact (`scripts/lib/__tests__/ai-runtime-providers.test.ts`). *** ### Task T018 - Add live-data validation and usage-panel tests **Started**: 2026-06-02 15:10 **Completed**: 2026-06-02 15:10 **Duration**: 1 minute **Notes**: * Added validation coverage for additive Claude authoritative fields, credential stripping, and legacy compatibility. * Added usage-panel coverage for Claude Live/Estimate badges and deterministic reset labels. **Files Changed**: * `src/lib/__tests__/nested-validation.test.ts` - Added Claude authoritative validation and legacy compatibility assertions. * `src/components/__tests__/usage-panel.test.tsx` - Added Claude source badge and reset label rendering assertions. **BQC Fixes**: * Trust boundary enforcement: Validation tests assert token-shaped data is stripped from browser-visible usage (`src/lib/__tests__/nested-validation.test.ts`). * Accessibility and platform compliance: Component tests query accessible source labels (`src/components/__tests__/usage-panel.test.tsx`). *** ### Task T019 - Run focused script tests **Started**: 2026-06-02 15:10 **Completed**: 2026-06-02 15:10 **Duration**: 1 minute **Notes**: * Ran focused script-side tests for OAuth helper, usage assembly, aggregate orchestration, and redaction. * Result: 4 test files passed, 50 tests passed. **Files Changed**: * None. *** ### Task T020 - Run focused browser contract and usage-panel tests **Started**: 2026-06-02 15:11 **Completed**: 2026-06-02 15:11 **Duration**: 1 minute **Notes**: * Initial focused browser test run found legacy expectation and decoded JSON label compatibility issues. * Fixed the legacy assertion and allowed decoded `\u00b7` labels in validation. * Reran focused browser tests successfully. * Result: 2 test files passed, 128 tests passed. **Files Changed**: * `src/lib/validate-live-data.ts` - Allowed decoded weekly label separator during validation. * `src/lib/__tests__/nested-validation.test.ts` - Updated legacy expectation for sanitized Claude usage shape. *** ### Task T021 - Run typechecks and full test suite **Started**: 2026-06-02 15:11 **Completed**: 2026-06-02 15:13 **Duration**: 2 minutes **Notes**: * `bun run typecheck` passed. * Initial `bun run typecheck:scripts` found test mock typing issues for `fetch` and `setTimeout`; fixed with explicit test-only casts and reran successfully. * Initial full `bun run test` found one remaining legacy exact-pass-through assertion; updated it for the sanitized Claude usage shape. * Final `bun run test` passed: 221 test files, 2931 tests. **Files Changed**: * `scripts/lib/__tests__/claude-oauth-usage.test.ts` - Fixed script test mock typing. * `src/lib/__tests__/validate-live-data.test.ts` - Updated legacy expectation for sanitized Claude usage shape. *** ### Task T022 - Validate ASCII/LF output and record final evidence **Started**: 2026-06-02 15:13 **Completed**: 2026-06-02 15:13 **Duration**: 1 minute **Notes**: * Ran ASCII scan across session-touched files: no non-ASCII bytes found. * Ran CRLF scan across session-touched files: no CRLF line endings found. * Recorded verification commands, residual risks, and privacy evidence. **Files Changed**: * `.spec_system/specs/phase21-session03-authoritative-claude-usage-oauth/implementation-notes.md` - Added final verification record. * `.spec_system/specs/phase21-session03-authoritative-claude-usage-oauth/tasks.md` - Marked all tasks and completion checklist complete. * `.spec_system/specs/phase21-session03-authoritative-claude-usage-oauth/security-compliance.md` - Added final sign-off. *** ## Verification Commands | Command | Result | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------- | | `bun run test -- scripts/lib/__tests__/claude-oauth-usage.test.ts scripts/lib/__tests__/usage-assembly.test.ts scripts/lib/__tests__/aggregate-orchestration.test.ts scripts/lib/__tests__/ai-runtime-providers.test.ts` | Pass: 4 files, 50 tests | | `bun run test -- src/lib/__tests__/nested-validation.test.ts src/components/__tests__/usage-panel.test.tsx` | Pass: 2 files, 128 tests | | `bun run typecheck:scripts` | Pass | | `bun run typecheck` | Pass | | `bun run test` | Pass: 221 files, 2931 tests | | `LC_ALL=C rg -n '[^\\x00-\\x7F]' ` | Pass: no matches | | `LC_ALL=C rg -nU '\\r' ` | Pass: no matches | ## Privacy Evidence * `fetchClaudeOAuthUsage` returns only safe source, fetched timestamp, usage percentages, reset timestamps, extra usage numbers, and safe plan-tier labels. * OAuth access tokens remain inside the script-only helper scope and are not included in authoritative output. * `buildClaudeWindow` copies only known authoritative fields before generated-data emission. * `validateLiveData` constructs a known safe Claude usage shape and strips credential-shaped browser-visible data. * `redactSensitiveText` covers `sk-ant-oat01-*`, bearer headers, `accessToken`, `refreshToken`, and `authorization` shapes while preserving `tokens` and `tokenCount`. * Tests assert token non-exposure in helper output, projection output, validation output, and free-form redaction. ## Residual Risks * The Anthropic OAuth `/usage` endpoint is undocumented and may change response shape; invalid or changed shapes return `null` and preserve local estimates. * Live credential and real network behavior were not exercised by design; all credential, Keychain, CLI, timeout, and fetch behavior was tested with mocks. * Reset labels depend on server reset timestamps when OAuth data is available; invalid timestamps are ignored and display fallback labels. *** --- # Agent Instructions This documentation is published with GitBook. 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