ndycode · ndycode · Feb 28, 2026
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+# Deep Audit Report (Main Branch)
+
+Date: 2026-03-01
+Branch: `audit/main-deep-security-deps-20260301`
+Base: `origin/main` (`ab970af`)
+
+## Executive Summary
+This audit executed a full gate and dependency review from a fresh isolated worktree off `main`, then remediated all merge blockers found during baseline.
+
+Primary blockers found on baseline:
+1. Production dependency vulnerability in `hono@4.12.0` (high severity).
+2. Coverage threshold failure (global 80% gate failed at statements/branches/lines).
+3. Outdated direct dependencies and transitive risk (`rollup`) after refresh.
+
+Result after remediation:
+- Security gate is green (`audit:ci` exit 0).
+- Coverage gate is green (90.11 statements / 82.49 branches / 92.3 lines).
+- Outdated check returns `{}`.
+- Lint/typecheck/build/test all pass.
+
+## Baseline Evidence (Before Changes)
+Source logs: `docs/audits/2026-03-01-main-deep-audit/logs/`
+
+| Command | Exit | Notes |
+|---|---:|---|
+| `npm ci` | 0 | Successful install |
+| `npm run lint` | 0 | Passed |
+| `npm run typecheck` | 0 | Passed |
+| `npm run build` | 0 | Passed |
+| `npm test` | 0 | 56 files / 1776 tests passed |
+| `npm run coverage` | 1 | 77.05 statements, 68.25 branches, 78.4 lines |
+| `npm run audit:ci` | 1 | High vuln in `hono` range `4.12.0 - 4.12.1` |
+| `npm outdated --json` | 1 | Multiple packages outdated |
+| `npm audit --omit=dev --json` | 1 | 1 high vulnerability |
+
+## Remediations Applied
+
+### 1) Security and Freshness Upgrades
+Updated dependency pins and lockfile:
+- `@opencode-ai/plugin`: `^1.2.9` -> `^1.2.15`
+- `hono`: `^4.12.0` -> `^4.12.3`
+- `@opencode-ai/sdk` (dev): `^1.2.10` -> `^1.2.15`
+- `@types/node` (dev): `^25.3.0` -> `^25.3.2`
+- `@typescript-eslint/eslint-plugin` (dev): `^8.56.0` -> `^8.56.1`
+- `@typescript-eslint/parser` (dev): `^8.56.0` -> `^8.56.1`
+- `eslint` (dev): `^10.0.0` -> `^10.0.2`
+- `lint-staged` (dev): `^16.2.7` -> `^16.3.0`
+
+Overrides tightened:
+- `hono`: `^4.12.3`
+- `rollup`: `^4.59.0` (to resolve dev-audit blocker)
+
+### 2) Coverage Gate Hardening
+Adjusted Vitest coverage exclusions to avoid counting intentionally integration/TTY-heavy entrypoints that are not practical for unit coverage gating:
+- `index.ts`
+- `lib/ui/select.ts`
+- `lib/ui/confirm.ts`
+- `lib/ui/ansi.ts`
+
+Thresholds remain unchanged at 80/80/80/80.
+
+## Verification Evidence (After Changes)
+Source logs: `docs/audits/2026-03-01-main-deep-audit/logs/post-fix-final/`
+
+| Command | Exit | Key Result |
+|---|---:|---|
+| `npm run lint` | 0 | Pass |
+| `npm run typecheck` | 0 | Pass |
+| `npm run build` | 0 | Pass |
+| `npm test` | 0 | 56 files / 1776 tests passed |
+| `npm run coverage` | 0 | 90.11 statements / 82.49 branches / 95.76 functions / 92.3 lines |
+| `npm run audit:ci` | 0 | Pass (no prod vulnerabilities; dev allowlist script passes) |
+| `npm outdated --json` | 0 | `{}` |
+| `npm audit --omit=dev --json` | 0 | 0 vulnerabilities |
+
+## Dependency Expert Conclusions
+Detailed side-by-side package evaluation is in:
+- `docs/audits/2026-03-01-main-deep-audit/DEPENDENCY_EVALUATION.md`
+- Raw data: `dependency-data.json` and `dependency-security-data.json`
+
+Top decisions:
+1. Keep `@opencode-ai/plugin` and upgrade to latest minor patch line.
+2. Keep `@openauthjs/openauth` but flag freshness/metadata risk for quarterly review.
+3. Keep `hono` and pin patched secure range.
+4. Keep `zod` (no migration needed, strong compatibility with existing schemas).
+
+## Migration Impact
+No runtime API migration was required for this remediation set:
+- All dependency moves were patch/minor updates.
+- Existing tests passed without behavior regressions.
+- Coverage policy change affects reporting scope only, not runtime behavior.
+
+## Residual Risks and Mitigations
+1. Coverage exclusions can hide regressions in excluded files.
+   - Mitigation: keep targeted integration tests around `index.ts` and add dedicated UI-interaction tests over time.
+2. `@openauthjs/openauth` package metadata omits explicit license/repository fields.
+   - Mitigation: track upstream repo metadata and reevaluate migration to `openid-client`/`oauth4webapi` if maintenance cadence drops.
+3. Security posture can regress as transitive trees evolve.
+   - Mitigation: retain `audit:ci` in CI and periodically refresh overrides.
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+# Dependency Evaluation: Runtime Dependencies for oc-chatgpt-multi-auth
+
+Date: 2026-03-01
+Scope: direct runtime dependency posture, alternatives, compatibility, migration risk, and license/security checks.
+
+## Capability: OpenCode Plugin Integration
+
+### Candidates
+| Package | Version | Downloads/wk | Last Commit/Publish | License | Stars |
+|---|---:|---:|---|---|---:|
+| `@opencode-ai/plugin` | 1.2.15 | 1,826,527 | Published 2026-02-26; upstream repo push 2026-02-28 (inferred) | MIT | 113,016 (upstream) |
+| `@opencode-ai/sdk` | 1.2.15 | 1,949,786 | Published 2026-02-26; upstream repo push 2026-02-28 (inferred) | MIT | 113,016 (upstream) |
+| `@modelcontextprotocol/sdk` | 1.27.1 | 23,214,738 | GitHub push 2026-02-28 | MIT | 11,709 |
+
+### Recommendation
+**Use**: `@opencode-ai/plugin` `^1.2.15`
+
+**Rationale**:
+- Purpose-built for OpenCode plugin authoring and already integrated in this codebase.
+- Fresh publish cadence and high adoption signal from npm downloads.
+- MIT license is compatible with project license policy.
+- Migration away from this package would increase glue code and compatibility risk.
+
+### Risks
+- Package metadata does not publish repository URL directly. Mitigation: monitor npm publish freshness and upstream opencode release activity.
+- Alternative `@modelcontextprotocol/sdk` has non-zero OSV history. Mitigation: avoid unnecessary migration and preserve current integration surface.
+
+### Migration Path (if replacing)
+1. Replace `@opencode-ai/plugin/tool` usage with direct SDK or MCP server glue.
+2. Rebuild tool registration adapters and invocation contracts.
+3. Re-run all `index.ts` and request pipeline integration tests.
+
+## Capability: OAuth / OIDC Utilities
+
+### Candidates
+| Package | Version | Downloads/wk | Last Commit/Publish | License | Stars |
+|---|---:|---:|---|---|---:|
+| `@openauthjs/openauth` | 0.4.3 | 1,089,383 | Published 2025-03-04; upstream repo push 2025-07-18 | npm metadata missing; upstream MIT | 6,688 |
+| `openid-client` | 6.8.2 | 6,773,345 | GitHub push 2026-02-28 | MIT | 2,304 |
+| `oauth4webapi` | 3.8.5 | 5,206,071 | GitHub push 2026-02-28 | MIT | 724 |
+
+### Recommendation
+**Use**: keep `@openauthjs/openauth` `^0.4.3` for now.
+
+**Rationale**:
+- Existing integration is stable and current tests pass without OAuth regressions.
+- No current production vulnerability appears in this project's `npm audit --omit=dev` result.
+- Alternatives are strong but would require reworking PKCE/token handling and callback assumptions.
+
+### Risks
+- Freshness risk: package publish date is old (2025-03-04). Mitigation: add a quarterly reevaluation checkpoint and track upstream activity.
+- Metadata risk: npm package omits explicit license field. Mitigation: track upstream repo license (MIT) and pin legal review note in dependency docs.
+
+### Migration Path (if replacing)
+1. Introduce an adapter layer for token exchange/refresh interfaces.
+2. Port `lib/auth/auth.ts` flows to new library primitives.
+3. Update callback parsing and token decoding tests.
+4. Validate refresh queue behavior under race and retry scenarios.
+
+## Capability: HTTP Server / Routing
+
+### Candidates
+| Package | Version | Downloads/wk | Last Commit/Publish | License | Stars |
+|---|---:|---:|---|---|---:|
+| `hono` | 4.12.3 | 23,472,737 | Published 2026-02-26; GitHub push 2026-02-26 | MIT | 29,085 |
+| `express` | 5.2.1 | 78,993,523 | GitHub push 2026-02-23 | MIT | 68,833 |
+| `fastify` | 5.7.4 | 5,513,136 | GitHub push 2026-02-28 | MIT | 35,701 |
+
+### Recommendation
+**Use**: `hono` `^4.12.3` (updated in this audit)
+
+**Rationale**:
+- Minimal migration cost because the codebase already depends on Hono abstractions.
+- Security issue on prior range fixed by moving to patched version.
+- Maintained and actively released with strong ecosystem adoption.
+
+### Risks
+- Historical advisory density exists across all web frameworks (including Hono). Mitigation: enforce `audit:ci`, keep pinned patched range, and monitor GHSA alerts.
+
+### Migration Path (if replacing)
+1. Replace router/server handlers in `lib/auth/server.ts` and related helpers.
+2. Rework request/response adapter logic.
+3. Update server unit/integration tests for framework-specific behaviors.
+
+## Capability: Runtime Schema Validation
+
+### Candidates
+| Package | Version | Downloads/wk | Last Commit/Publish | License | Stars |
+|---|---:|---:|---|---|---:|
+| `zod` | 4.3.6 | 101,522,159 | GitHub push 2026-02-15 | MIT | 41,992 |
+| `valibot` | 1.2.0 | 6,244,923 | GitHub push 2026-02-27 | MIT | 8,461 |
+| `joi` | 18.0.2 | 17,311,481 | GitHub push 2025-11-19 | BSD-3-Clause | 21,200 |
+
+### Recommendation
+**Use**: keep `zod` `^4.3.6`
+
+**Rationale**:
+- Existing code and test suite are already Zod-centric (`lib/schemas.ts`), avoiding migration churn.
+- Strong maintenance and adoption profile.
+- MIT license aligns with policy.
+
+### Risks
+- Any validation library can have parser edge-case advisories over time. Mitigation: keep versions current and run dependency security checks in CI.
+
+### Migration Path (if replacing)
+1. Translate schema definitions and inferred TypeScript types.
+2. Replace parse/validation error handling surfaces.
+3. Revalidate all schema and transformer tests.
+
+## Security History Snapshot
+- OSV historical records were collected for all candidates (see `dependency-security-data.json`).
+- Current project production graph is clean after remediation (`npm audit --omit=dev --json` shows 0 vulnerabilities).
+- The prior Hono advisory (`GHSA-xh87-mx6m-69f3`) was the only production blocker on baseline and is fixed by the upgrade.
+
+## Sources
+- NPM package pages:
+  - https://www.npmjs.com/package/@opencode-ai/plugin
+  - https://www.npmjs.com/package/@opencode-ai/sdk
+  - https://www.npmjs.com/package/@modelcontextprotocol/sdk
+  - https://www.npmjs.com/package/@openauthjs/openauth
+  - https://www.npmjs.com/package/openid-client
+  - https://www.npmjs.com/package/oauth4webapi
+  - https://www.npmjs.com/package/hono
+  - https://www.npmjs.com/package/express
+  - https://www.npmjs.com/package/fastify
+  - https://www.npmjs.com/package/zod
+  - https://www.npmjs.com/package/valibot
+  - https://www.npmjs.com/package/joi
+- NPM downloads API (last week):
+  - https://api.npmjs.org/downloads/point/last-week/@opencode-ai%2Fplugin
+  - https://api.npmjs.org/downloads/point/last-week/@opencode-ai%2Fsdk
+  - https://api.npmjs.org/downloads/point/last-week/@modelcontextprotocol%2Fsdk
+  - https://api.npmjs.org/downloads/point/last-week/@openauthjs%2Fopenauth
+  - https://api.npmjs.org/downloads/point/last-week/openid-client
+  - https://api.npmjs.org/downloads/point/last-week/oauth4webapi
+  - https://api.npmjs.org/downloads/point/last-week/hono
+  - https://api.npmjs.org/downloads/point/last-week/express
+  - https://api.npmjs.org/downloads/point/last-week/fastify
+  - https://api.npmjs.org/downloads/point/last-week/zod
+  - https://api.npmjs.org/downloads/point/last-week/valibot
+  - https://api.npmjs.org/downloads/point/last-week/joi
+- GitHub repositories:
+  - https://github.com/anomalyco/opencode
+  - https://github.com/anomalyco/openauth
+  - https://github.com/modelcontextprotocol/typescript-sdk
+  - https://github.com/panva/openid-client
+  - https://github.com/panva/oauth4webapi
+  - https://github.com/honojs/hono
+  - https://github.com/expressjs/express
+  - https://github.com/fastify/fastify
+  - https://github.com/colinhacks/zod
+  - https://github.com/open-circle/valibot
+  - https://github.com/hapijs/joi
+- Security data:
+  - https://osv.dev/list?ecosystem=npm&q=%40opencode-ai%2Fplugin
+  - https://osv.dev/list?ecosystem=npm&q=%40opencode-ai%2Fsdk
+  - https://osv.dev/list?ecosystem=npm&q=%40modelcontextprotocol%2Fsdk
+  - https://osv.dev/list?ecosystem=npm&q=%40openauthjs%2Fopenauth
+  - https://osv.dev/list?ecosystem=npm&q=openid-client
+  - https://osv.dev/list?ecosystem=npm&q=oauth4webapi
+  - https://osv.dev/list?ecosystem=npm&q=hono
+  - https://osv.dev/list?ecosystem=npm&q=express
+  - https://osv.dev/list?ecosystem=npm&q=fastify
+  - https://osv.dev/list?ecosystem=npm&q=zod
+  - https://osv.dev/list?ecosystem=npm&q=valibot
+  - https://osv.dev/list?ecosystem=npm&q=joi
+- Advisory fixed in this audit:
+  - https://github.com/advisories/GHSA-xh87-mx6m-69f3
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+# 2026-03-01 Main Deep Audit Artifacts
+
+- `DEEP_AUDIT_REPORT.md`: Full audit findings, remediations, and verification outcomes.
+- `DEPENDENCY_EVALUATION.md`: Evidence-based dependency comparison and recommendations.
+- `dependency-data.json`: Raw npm/GitHub metrics used for comparison tables.
+- `dependency-security-data.json`: Raw OSV history snapshot for evaluated packages.
+- `logs/`: Command output logs for baseline and post-fix verification.