# Session 017 -- Phase 2 Critical Path: Key Management + Plan-Based Rate Limiting

## Date: 2026-02-16 14:00 UTC

## Summary
Executed the Phase 2 critical path implementation plan. Built the key management API, plan definitions, and plan-based rate limiting. All 301 tests passing. GitHub issues seeding still rate-limited (account flagged).

## What Was Done

### 1. Design & Planning
- Created design doc: `docs/plans/2026-02-16-github-ssot-and-phase2-design.md`
- Created implementation plan: `docs/plans/2026-02-16-phase2-critical-path.md` (9 tasks, TDD approach)
- GitHub issue seeder script: `tools/seed-github-issues.py` (37 issues defined, rate limited at 60/hr)

### 2. Key Management API (`/api/keys/*`)
- **New file**: `llmhosts/proxy/key_routes.py` — REST endpoints for create/list/revoke API keys
- **Modified**: `llmhosts/proxy/auth.py` — added `plan` field to keys, `lmh_` prefix, `get_plan_by_id()`, exempt `/api/keys` from auth
- **Modified**: `llmhosts/proxy/app.py` — registered key_routes router
- **Tests**: `tests/test_key_management_api.py` (6 tests)

### 3. Plan Definitions
- **New file**: `llmhosts/plans.py` — frozen dataclass `PlanLimits` with free/pro/team/enterprise tiers
- **Tests**: `tests/test_plans.py` (6 tests)

### 4. Plan-Based Rate Limiting
- **Modified**: `llmhosts/proxy/ratelimit.py` — rate limiter reads plan from request state, applies plan-specific RPM (free=60, pro=300, team=600, enterprise=unlimited)
- Auth middleware now attaches `request.state.plan` for rate limiter
- Backward compatible: respects configured burst when plan matches default
- **Tests**: `tests/test_plan_ratelimit.py` (4 tests), `tests/test_auth_plan_flow.py` (3 tests)

### 5. Stripe Routes (Already Existed)
- Verified checkout (`/api/stripe/checkout`) and portal (`/api/stripe/portal`) routes were already implemented in a prior session — no new work needed

### 6. GitHub Setup (Partial — Rate Limited)
- Created 4 milestones (Phase 1-4)
- Created 9 additional labels (epic, phase, status categories)
- Issue seeder script ready, blocked on rate limit reset

## Commits This Session
| Commit | Description |
|--------|-------------|
| `b7f5297` | docs: Phase 2 critical path implementation plan (9 tasks) |
| `a38c0ac` | feat(api): key management, plan definitions, plan-based rate limiting |

## Codebase Metrics
| Metric | Count |
|--------|-------|
| Python source files | ~106 |
| Test files | 27 |
| Total tests | 301 |
| Tests passing | 301 (100%) |
| New tests this session | 19 |

## New Files Created
| File | Purpose |
|------|---------|
| `llmhosts/plans.py` | Plan definitions (free/pro/team/enterprise) |
| `llmhosts/proxy/key_routes.py` | `/api/keys/*` REST endpoints |
| `tests/test_key_management_api.py` | Key management endpoint tests |
| `tests/test_plans.py` | Plan definition tests |
| `tests/test_plan_ratelimit.py` | Plan-based rate limiting tests |
| `tests/test_auth_plan_flow.py` | Integration test: auth + plan + revoke flow |
| `tools/seed-github-issues.py` | GitHub issue seeder (37 issues) |
| `docs/plans/2026-02-16-github-ssot-and-phase2-design.md` | GitHub SSOT + Phase 2 design |
| `docs/plans/2026-02-16-phase2-critical-path.md` | Implementation plan (9 tasks) |

## Current Branch State
- `main` = `develop` = `origin/main` = `origin/develop` (all synced at `a38c0ac`)

## Phase 2 Critical Path Progress
| Task | What | Status |
|------|------|--------|
| 1-2 | Key Management API (`/api/keys/*`) | DONE |
| 3-4 | Plan-based rate limiting | DONE |
| 5 | Stripe checkout + portal routes | DONE (pre-existing) |
| 6 | Plan definitions (`plans.py`) | DONE |
| 7 | Wire plans into rate limiter | DONE (done inline with Task 4) |
| 8 | Integration test (full flow) | DONE |
| 9 | Final verify + push | DONE |

## What Is Needed Next

### Revenue Critical Path (remaining)
1. **Next.js plans page** — frontend pricing component that calls checkout API
2. **Plan sync: Next.js ↔ Python proxy** — when user subscribes via Stripe, the proxy key's plan must update
3. **Frontend key management UI** — dashboard page for users to create/view/revoke API keys

### GitHub SSOT
4. **Seed GitHub issues** — run `tools/seed-github-issues.py` once rate limit resets (37 issues)
5. **GitHub Projects board** — blocked on GraphQL (flagged account)

### Near-term
6. **TestPyPI publish** — verify package installs cleanly
7. **`llmhosts tunnel --public`** — shareable URL (Pro+)
8. **Multi-device activation** — device count enforcement per plan

### Deferred Blockers (unchanged)
| Priority | Item | Status |
|----------|------|--------|
| P0 | GitHub account flag | Waiting on GitHub |
| P0 | GitHub Pro upgrade | Blocked by flag |
| P1 | Branch protection, Copilot, Project board | Blocked by Pro/flag |
| P2 | SSH key registration | Mitigated by HTTPS |
