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Author	SHA1	Message	Date
4 people	cad26c6bfb	fix(tool-gateway): bound MCP discovery memory and concurrency (#14864) ... ## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Agents discover governed tools through the MCP gateway. > - A listing repeated policy and full run-row reads for each catalog tool. > - Parallel listings multiplied those allocations during run startup. > - One 900-tool baseline listing used 11,489 queries and about 1.7 GiB of extra heap in a fixture. > - This pull request shares reads within a listing and bounds whole listings across the process. > - The benefit is lower discovery memory use while execution still checks current policy. ## Linked Issues or Issue Description Refs #13115. Its on-demand target change affects the same listing loop. **What happened?** MCP discovery repeated roughly 13 reads per tool. Full run snapshots and repeated connection configurations caused large allocations. Per-listing bounds alone did not limit concurrent listings across gateways. **Expected behavior** Discovery reads shared inputs once per listing. The process bounds active and queued listings. Catalog payload size and policy evaluation still grow with the catalog. Tool execution checks current access rules. **Steps to reproduce** Create a company with a remote MCP connection, 900 catalog tools, large schemas, and a large run snapshot. Send concurrent tools/list requests using a run-bound gateway token. Run the committed benchmark for a deterministic reproduction. **Paperclip version or commit** Baseline: f2e0f19630. Measured on Node 26.4.0 on macOS. ## What Changed - Keep Michael Nguyen's per-listing policy cache, scalar policy reads, 16-decision bound, and catalog/connection split under repeatable read. - Admit two whole listings per process and queue at most 32. Return 503 with tool_discovery_busy when full. - Propagate disconnects to discovery. Stop scheduling new reads and drain started reads before freeing the slot. - Project context IDs in gateway authentication and GitHub runtime discovery. Avoid loading task descriptions and results. - Keep discovery audit counts and a SHA-256 digest instead of the full name list. Retain access and activity audit records. - Sweep expired named gateway tokens at startup and on the existing scheduler. Delete at most 500 per pass. Add an idempotent expiry-index migration. Resolve audit token references atomically so cleanup cannot break admitted requests. - Return GET 405 with Allow: POST on stateless MCP gateway and runtime-tools endpoints. Keep runtime-tools authentication. - Add red-green regressions, HTTP concurrency and policy-revocation coverage, and browser approval assertions. - Commit the benchmark harness, raw results, and resource-bound documentation. ## Verification - Baseline listing regressions failed with 722 queries for 50 tools and 6,422 for 500. The connection-row duplication regression also failed. - Follow-up regressions failed before the fixes for full snapshot reads, abandoned listings, full name-list audits, and expired tokens. - Listing and scheduler tests: 14 pass. Existing gateway/policy suites passed after preserving the cleanup return contract. - Two HTTP journeys pass: initialize, GET/SSE rejection, 16 concurrent 500-tool listings, provider call, policy revocation, and denied retry. Token cleanup during provider dispatch also completes successfully and blocks subsequent requests. - pnpm test:e2e tests/e2e/mcp-user-stories.spec.ts --grep '@mcp-runnable': 8 pass. The approval journey clicks Allow once in the browser. Review screenshots wait for loaded content. - pnpm -r typecheck: passes. pnpm build: passes. - The general server group completed with 14,755 passes and 18 failures. The 17 startup mock failures were fixed; all 21 startup tests pass on rerun. The one Discord timing failure passed on the unchanged baseline and on rerun (74 tests). UI and CLI groups pass 7,632 tests. Shared and skill groups pass 853 tests. The remaining database and adapter groups pass 3,010 tests with one worker after a macOS shared-memory limit interrupted a parallel run. All 149 serialized route files pass (2,762 tests). - At 900 tools, one listing falls from 11,489 to 36 queries and from about 1.7 GiB to 37 MiB of extra heap. Sixteen concurrent listings used 169–187 MiB of extra heap. Four connections used 39 queries per listing. - Latest-head verification: 54 successful checks and two expected skips on 5c0793090c. Fresh Greptile review: 5/5 with no unresolved threads. - Reproduce with server/scripts/benchmark-tool-gateway-listing.ts. See doc/mcp-discovery-performance.md and doc/benchmarks/2026-10-01-mcp-discovery.json. ## Risks - The process-wide FIFO queue can increase discovery latency. Excess callers must retry 503 responses. - Cancellation applies to discovery. Started database reads finish before their slot is released. - Audit consumers must use visibleToolCount and visibleToolsHash instead of visibleTools. - The expiry index can briefly lock the token table during migration. Sweeps preserve unexpired and non-expiring tokens. - Measurements use isolated fixtures and deterministic providers. They do not establish a production heap limit or affected installation count. Rate-limit reads remain uncached. ## Model Used - Original listing optimization: Anthropic Claude Opus 5.5 (claude-opus-5-5), Claude Code, extended thinking and tool use, as recorded by the original author. - Follow-up fixes and verification: OpenAI Codex, GPT-6, with shell execution, file edits, database fixtures, and browser tests. The exact serving model ID and context window are not exposed in this session. ## 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 - [x] My branch name describes the change 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 - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Dotta <bippadotta@protonmail.com> Co-authored-by: Paperclip <noreply@paperclip.ing>	2026-10-02 07:45:27 -05:00
DottaandPaperclip	8813a50105	feat: run GitHub review bots through Paperclip agents (#13717) ... ## Thinking Path > - Paperclip manages agent work as tasks and runs. > - GitHub chat brings repository conversations into those tasks. > - A review bot needs the assigned agent, its authority, and governed provider tools. > - The existing channel connection did not supply that review workflow or a complete setup journey. > - This pull request adds GitHub App setup, account access, event prompts, task-bound review tools, and exact-commit checks. > - Operators can inspect each review through the same task, run, and activity systems. ## Linked Issues or Issue Description **Subsystem affected** GitHub chat, governed connection tools, task execution, shared/database contracts, and connector setup UI. **Problem or motivation** Operators need a GitHub review bot that runs their assigned Paperclip agent. Mentions and PR events must preserve task ownership and requester authority. Provider publication must use the bot App identity and enforce the configured permissions. **Proposed solution** Extend the existing GitHub chat connector with resumable App onboarding, linked-member and sponsored-guest access, editable event prompts, and governed review operations. Validate structured assessments on the server and compute a stable Paperclip Review check for the exact head commit. **Alternatives considered** A separate review scheduler would duplicate Paperclip execution and permissions. Reusing personal GitHub credentials would change the bot identity and credential boundary. **Roadmap alignment** This extends the existing Connected Apps and governed-tool infrastructure. The project owner requested and approved this design. Related PR #8645 imports external Codex review feedback; this change runs an assigned Paperclip agent and publishes its results through the existing chat connector. ## What Changed - Include the current Paperclip instance origin in the copied setup prompt. Storybook uses its configured Paperclip origin; callback parameters and URL credentials are excluded. - Add a Claude/Codex copy button in the real setup and Storybook opening step. Its detailed prompt asks four setup questions and guides embedded-browser setup, verification, and optional required checks. Clipboard failure exposes selectable instructions. - Add a tutorial that explains why App installation, review scheduling, and required checks are separate choices. - Add manifest registration, an existing-App path, separate installation and repository selection, repository refresh, and explicit account confirmation. - Add low-trust agent guidance, effective capability verification, member selection, and explicit restricted guests with a sponsor. - Add configurable PR events, prompts, repository overrides, rating thresholds, and separate formal-review permissions. - Give the assigned agent governed App tools to read PRs, comment, begin an assessment, submit findings, and optionally submit a formal review. - Bind review history, root PR events, and inline replies to ordinary tasks. Deduplicate deliveries/findings and reject stale publication. - Link check Details to the underlying task on the current trusted hostname, or to Reviews before task creation. - Add schema migration 0283, API contracts, production UI, and 49 interactive Storybook states. - Repair local lease recovery. Keep the Cloud Dockerfile identical to master; no provider-pack layer or runtime-default environment variable is added. - Retry only rolled-back wake-admission transactions after transient endpoint-lock contention. A deterministic held-lock regression proves one accepted wake. ## Verification - Current head: `7ba761fe007bb798400d3e62346fa964f607f0f8`, rebased on master `d9b3a5653e41f2ee5a1345b97c86a238f7a5c8e9`. Dockerfile has zero diff against master. Final workspace typecheck and build passed. The new PostgreSQL migration regression passed and preserves existing relation and constraint identities after replay. - Greptile reviewed this exact head at 5/5. There are zero unresolved review threads and no merge conflicts. - All current-head checks are green: 54 passed and two conditional Storybook jobs skipped. This includes complete server/workspace test suites, build, typechecks, policy checks, Runner suites, browser suites, and security status. One timing-sensitive callback-ordering test passed in isolation and its CI shard passed one retry. The duplicate local full-suite run was stopped after CI completed; it is not counted as a local full-suite pass. - Before the final Slack rebase and migration renumbering, 186 focused GitHub tests, 14 native bootstrap cases, token gates, and Storybook build passed. The final rebase retained the new Slack communication guidance. - The embedded-browser setup test copied the full detailed prompt, including the configured Paperclip instance URL. Desktop and narrow layouts were checked. Component tests cover successful copying and clipboard failure with selectable text and retry. - Live local and hosted GitHub acceptance evidence refers to application revision `cb703ac959876a07ebf3d7a295847f9f351eb6fc`. Real agent tasks exercised issue mentions, automatic PR reviews, inline findings, repeated mentions, task continuation, and failing-to-passing checks after a push. The Storybook agent generated, built, and browser-rendered pages; missing acceptance text failed, matching text passed, and broken JSX produced an incomplete result. - Live cases also covered independently disabled push events, prompt injection, duplicate signed deliveries, rapid pushes, stale-result rejection, finding deduplication, and restart recovery. Formal reviews were denied while disabled and published only after explicit enablement. Check Details links pointed to the underlying task on the trusted hostname. - Those hosted native Claude runs used the provider-pack layer now removed from this PR. They do not prove native Claude works on the standard Cloud image. A replacement hosted native Codex run is not yet verified: the disposable QA tenant has only an Anthropic AI connection. No new staging or production deployment was made for the packaging removal. - Required-check merge enforcement could not be tested because the private disposable repository's GitHub plan rejected the rules configuration. Published success/failure/incomplete check states were verified directly. ## Risks - Latest master allocated migration 0282 to Slack. The GitHub migration is regenerated as 0283 with replay-safe table/index/constraint creation; a PostgreSQL regression verifies existing relations and constraints are preserved. Existing preview tenants remain subject to the fleet migration-history compatibility preflight; no bypass is introduced. - Migration 0283 adds company-scoped configuration, registration, review, and publication records. Existing connections retain their behavior until reviews/tools are enabled. - Signed webhooks and expiring registration state remain required. Hosted installations also need the companion narrow Cloud gateway exemptions. - Agent assessments can be incomplete or wrong. The server enforces coverage/result structure, current-head publication, rating policy, and separate formal-review permission; it does not replace code-review judgment. - No Cloud image packaging changes are included. Remote native ACPX/Claude and OpenCode retain their existing operator-supplied provider-pack prerequisite. Native Codex and Codex with managed MCP tools do not require that pack. Earlier staging deployment evidence refers to its stated revision, not this packaging-removal head. Production rollout and merging remain outside this change. ## Model Used OpenAI GPT-6 through Codex, with repository, code execution, API, and embedded-browser tools. The exact serving model ID and context-window size were not exposed by the environment. ## 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 - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>	2026-09-21 14:41:19 -05:00