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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work > - The restart chaos harness collects each wave's speed from the board API after the tasks rest, including the M1 subtasks' runs > - The server rate-limits concurrent issue-list requests per client and answers 429 with `retryAfterSeconds` > - After a 95-task storm, the harness requested every M1 parent's subtask list at once. The server returned 429, speed collection failed, and the wave exited 1 with no speed grade > - This pull request makes harness GET requests honor a 429's retry delay with a bounded number of attempts, and collects subtask speed one parent at a time > - The benefit is that a busy wave keeps its speed grade, and the harness behaves like a polite API client ## Linked Issues or Issue Description Refs #20071, #20147 **What happened?** Wave `w-20261109T055902-s9402` (K13 storm, A1/C1/M1, 95 tasks) finished its tasks. Speed collection then failed with: `GET /api/companies/…/issues?view=index&parentIds=…&limit=20 returned 429: {"error":"Too many concurrent issue-list requests for this actor/client","retryAfterSeconds":1}`. `main.ts` ran `childSpeedTasks()` for every observer in parallel. **Expected behavior** - The harness waits and retries a rate-limited read. - It does not flood the issue-list endpoint while collecting speed. - A busy wave still gets graded. ## What Changed - `api.ts`: `ChaosApi` retries a GET that returns 429. - It waits for the delay from `Retry-After` or the body's `retryAfterSeconds` (default 1 s, capped at 10 s), scaled by the attempt number. - It makes at most 5 attempts by default. - Writes (POST/PUT/PATCH/DELETE) are never retried, so a user action is never repeated. - `rateLimitDelayMs` is exported for tests. - `main.ts`: subtask speed is collected one observer at a time instead of with `Promise.all`. - New `api.test.ts` against a real local HTTP server: - a GET that gets 429 twice, then 200, succeeds; - a POST that gets 429 is sent once; - retries stop at the bound; - delay parsing (header, body, cap, default). ## Verification - `npx vitest run` in `tests/restart-chaos`: 216 passed. - `node scripts/typecheck-test-projects.mjs tests/restart-chaos`: clean. ## Risks - A persistently rate-limited read now takes up to about 15 s before it fails, instead of failing at once. - Collecting subtask speed one parent at a time adds a few seconds to the end of large M1 waves. ## Model Used - Claude Opus 5.5 (`claude-opus-5-5`), Anthropic, with tool use and code execution in Claude Code. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [ ] All Paperclip CI gates are green - [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>