## Thinking Path > - Paperclip coordinates AI agents and their work. > - Heartbeat controls when that work starts, who owns execution, and how it settles. > - The extracted modules need shared architectural guidance as they evolve. > - Rules should protect those boundaries without freezing the current implementation. > - This PR adds scoped heartbeat principles for contributors and reviewers. > - The rule helps future changes preserve execution authority and recoverable work. ## Linked Issues or Issue Description **Issue type** Missing documentation. **Where is the issue?** The heartbeat service has a module map but no scoped architectural rule under `rules/`. **What's wrong?** Changes span admission, execution, completion, and recovery. Reviewers need shared principles for authority, ownership, and settlement across these boundaries. **Suggested fix** Add a concise heartbeat rule, route contributors to it from `AGENTS.md`, and register the same scope for Greptile. Keep implementation details in the code and existing developer documentation. Related: #16172 established scoped repository rules. #15984 completed the latest heartbeat extraction. Searches found no duplicate heartbeat-guidelines PR. ## What Changed - Add `rules/heartbeat-execution-boundaries.mdc` with a folder guide, a concise map of existing module responsibilities, and six design principles. - Keep `heartbeat.ts` focused on coordination: extend an existing owner or extract cohesive modules when new behavior would substantially grow it, with tests and explicit contracts. - Cover current execution authority, explicit ownership, distinct completion obligations, recovery intent, durable state, and visible uncertainty. - Register matching paths in `.greptile/files.json` and link the rule from `AGENTS.md` and `doc/DEVELOPING.md`. - Include behavioral review criteria and flag substantial coordinator growth or mixed responsibilities while allowing justified cohesion and ordering exceptions. ## Verification - Parsed the rule YAML and Greptile JSON. Confirmed that the rule globs exactly match the Greptile scope. - Checked 14 positive and negative scope cases with Node's `path.matchesGlob`, including nested heartbeat modules, sibling services, regression tests, and unrelated paths. - Verified local links and heading anchors, including the existing heartbeat module map, and confirmed all 20 named modules exist. Reviewed their responsibility descriptions against the current code and developer documentation. - `git diff origin/master --check` passed after rebasing onto current master. - Reviewed the principles against the current heartbeat code and tests. The diff changes four documentation and review-configuration files. - Application typecheck, runtime tests, and build were not run locally. This worktree has no installed dependencies. CI and review status are tracked below. - CI passed on `a17f5a2cc82b7bb7e4629d4a2d9e3a766e27c5c0`: 55 successful checks, two skipped, no failures or pending checks. This includes typecheck, build, server/runner tests, and browser tests. - Greptile reviewed the same commit at 5/5 with no findings or unresolved review threads. ## Risks The rule can influence later implementation and review decisions. It applies to changed heartbeat behavior and permits justified contract changes with tests. The scoped globs exclude unrelated subsystems. This PR does not change application behavior. Hosted loading of the new rule has not been demonstrated by the local configuration checks. ## Model Used OpenAI GPT-6 Astra (`gpt-6-astra`) via Codex, with repository inspection, file editing, and command execution. The context-window size was not exposed to 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 (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 (scoped rule/configuration checks described above) - [x] I have added or updated tests where applicable (documentation/configuration validation; no runtime changes) - [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>
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AGENTS.md
Guidance for human and AI contributors working in this repository.
1. Purpose
Paperclip is a control plane for AI-agent companies.
The current implementation target is V1 and is defined in doc/SPEC-implementation.md.
2. Read This First
Before making changes, read in this order:
doc/GOAL.mddoc/PRODUCT.mddoc/SPEC-implementation.mddoc/DEVELOPING.mddoc/DATABASE.md
doc/SPEC.md is long-horizon product context.
doc/SPEC-implementation.md is the concrete V1 build contract.
When adding or changing an Apps catalog connection, also follow
doc/connections/CONNECTOR-PLAYBOOK.md. It is the canonical connection
authoring runbook for provider research, supported transport/auth patterns,
credential handling, branding, implementation, testing, live proof, and PR
submission.
Scoped repository rules
Before editing or reviewing files, read the matching rules in rules/*.mdc.
Each rule has Markdown content and YAML frontmatter: globs contains
comma-separated, repository-relative file patterns, and alwaysApply: true
means the rule applies throughout the repository. Read all rules whose scope
matches the affected files. These rules supplement this file and any applicable
nested AGENTS.md instructions.
For server/src/services/chat-channels.ts and everything under
server/src/services/chat-channels/, read
rules/chat-channel-platform-boundaries.mdc.
For server/src/services/heartbeat.ts, server/src/services/heartbeat/,
heartbeat-prefixed sibling services, and heartbeat regression tests, read
rules/heartbeat-execution-boundaries.mdc.
See rules/README.md for rule authoring and Greptile setup.
3. Repo Map
server/: Express REST API and orchestration servicesui/: React + Vite board UIpackages/db/: Drizzle schema, migrations, DB clientspackages/shared/: shared types, constants, validators, API path constantspackages/adapters/: agent adapter implementations (Claude, Codex, Cursor, etc.)packages/adapter-utils/: shared adapter utilitiespackages/plugins/: plugin system packagespackages/skills-catalog/: app-shipped skills catalog (@paperclipai/skills-catalog)packages/teams-catalog/: app-shipped teams catalog (@paperclipai/teams-catalog)cli/:paperclipaiCLI package (published bin, agent-facing commands)skills/: Paperclip runtime/operational skills (not part of the app catalog)doc/: operational and product docs
4. Dev Setup (Auto DB)
Use embedded PGlite in dev by leaving DATABASE_URL unset.
pnpm install
pnpm dev
This starts:
- API:
http://localhost:3100 - UI:
http://localhost:3100(served by API server in dev middleware mode)
Quick checks:
curl http://localhost:3100/api/health
curl http://localhost:3100/api/companies
Reset local dev DB:
rm -rf data/pglite
pnpm dev
5. Core Engineering Rules
- Keep changes company-scoped. Every domain entity should be scoped to a company and company boundaries must be enforced in routes/services.
Explicit exception: announcement dismissals are instance-wide user preferences, keyed by user and announcement so they persist across companies. Their audit context must still validate company membership. The announcement publication-ID registry is instance-level feed metadata; it contains no company or user data.
- Keep contracts synchronized. If you change schema/API behavior, update all impacted layers:
packages/dbschema and exportspackages/sharedtypes/constants/validatorsserverroutes/servicesuiAPI clients and pages
- Preserve control-plane invariants.
- Single-assignee task model
- Atomic issue checkout semantics
- Approval gates for governed actions
- Budget hard-stop auto-pause behavior
- Activity logging for mutating actions
-
Do not replace strategic docs wholesale unless asked. Prefer additive updates. Keep
doc/SPEC.mdanddoc/SPEC-implementation.mdaligned. -
Keep repo plan docs dated and centralized. When you are creating a plan file in the repository itself, new plan documents belong in
doc/plans/and should useYYYY-MM-DD-slug.mdfilenames. This does not replace Paperclip issue planning: if a Paperclip issue asks for a plan, update the issueplandocument per thepaperclipskill instead of creating a repo markdown file. -
Attach inspectable generated artifacts. When your task produces a user-inspectable deliverable file, follow the Paperclip skill's "Generated Artifacts and Work Products" workflow before final disposition. In this repo, prefer the self-contained skill helper at
skills/paperclip/scripts/paperclip-upload-artifact.shso the file is available through the Paperclip API, create/update an artifact work product when the file is the deliverable, link the uploaded artifact in the final issue comment, and then set status. Do not rely on local filesystem paths as the only access path. If an important file intentionally remains workspace-only, create/update a work product withmetadata.resourceRef.kind: "workspace_file"and a workspace-relative path, then name that work product and path in the final comment. Treat browse/search as a fallback for recovering workspace files, not the preferred deliverable path. Seedoc/AGENT-ARTIFACTS.mdfor details and.mp4/.webmexamples. -
Name the three data paths correctly. This repo has three separate data paths. Do not confuse them. Match a change to a path by its file path, not by the word "observability" or "telemetry" alone.
- Telemetry is the Paperclip first-party event system. It is opt-out and it sends data to a Paperclip endpoint by default. Its paths are:
packages/shared/src/telemetry/- the generated contract
packages/shared/src/telemetry/generated/paperclip-telemetry.ts - each caller of
packages/shared/src/telemetry/events.tsorpackages/shared/src/telemetry/client.ts
- Observability is the OpenTelemetry trace path. An operator must set an OTLP endpoint. Until an operator sets the endpoint, the tracer is a no-operation. Its paths are:
server/src/instrumentation.tsdoc/observability.mdpackages/adapter-utils/src/duplex-observability.tsserver/src/services/duplex-observability-recorder.ts- the span attributes in
packages/adapter-utils/src/acpx-engine/startup-timing.ts
- The run log holds rows in the local
heartbeat_run_eventstable. The data stays in the instance database. Its paths are:doc/run-log-events.mdpackages/db/src/schema/heartbeat_run_events.ts- the append path
appendRunEventinserver/src/services/heartbeat.ts
Apply a review level that matches the path:
- Telemetry change (strict review). The author updates the generated contract first. The author updates
packages/shared/src/telemetry/README.mdin the same pull request. The author requests a privacy review. Reason: a Telemetry event goes to a Paperclip endpoint by default, so a mistake sends data immediately. - Observability change (lighter review). The operator endpoint gate stays in place. The no-operation behaviour stays when no endpoint is set. A privacy review is not necessary while the change stays inside the closed span-attribute allowlist.
- Run-log change (no extra review). A run-log change needs neither review level above, because the data stays in the instance database.
Exclusion. The word "observability" in a file such as server/src/services/recovery-observability.ts names a different concept. Apply this rule by path, not by word match.
6. Database Change Workflow
When changing data model:
- Edit
packages/db/src/schema/*.ts - Ensure new tables are exported from
packages/db/src/schema/index.ts - Generate migration:
pnpm db:generate
- Validate compile:
pnpm -r typecheck
Notes:
packages/db/drizzle.config.tsreads compiled schema fromdist/schema/*.jspnpm db:generatecompilespackages/dbfirst
7. Verification Before Hand-off
maps/feature-map/README.md is an optional reference for user entry points, verification recipes, and coverage gaps. The map records coverage scope, not proof that a live journey passed.
The sibling agent access map records APIs,
agent entry points and permission boundaries using the same capability IDs.
Follow the map contract: update affected entries when mapped
behavior or access changes, and run node scripts/check-maps.mjs after map edits.
Its structural checks do not prove live behavior or authorization.
Storybook has a downstream feature catalog.
Use maintain-storybook for story/fixture drift and review-storybook for browser
evidence. Keep the feature-map skills independent of this catalog. After story
or declared review-source changes, reconcile affected entries and run
node scripts/storybook-catalog.mjs; its checks are not production acceptance.
Default local/agent test path:
pnpm test
This is the cheap default and only runs the Vitest suite. Browser suites stay opt-in:
pnpm test:e2e
pnpm test:release-smoke
Run the browser suites only when your change touches them or when you are explicitly verifying CI/release flows.
For normal issue work, run the smallest relevant verification first. Do not default to repo-wide typecheck/build/test on every heartbeat when a narrower check is enough to prove the change.
Run this full check before claiming repo work done in a PR-ready hand-off, or when the change scope is broad enough that targeted checks are not sufficient:
pnpm -r typecheck
pnpm test:run
pnpm build
If anything cannot be run, explicitly report what was not run and why.
8. API and Auth Expectations
- Base path:
/api - Board access is treated as full-control operator context
- Agent access uses bearer API keys (
agent_api_keys), hashed at rest - Agent keys must not access other companies
When adding endpoints:
- apply company access checks
- enforce actor permissions (board vs agent)
- write activity log entries for mutations
- return consistent HTTP errors (
400/401/403/404/409/422/500)
9. UI Expectations
- Keep routes and nav aligned with available API surface
- Use company selection context for company-scoped pages
- Surface failures clearly; do not silently ignore API errors
- Form and wizard footers: keep Save & exit (or Cancel/Back) left and the primary action right in the same vertically aligned row. Each step owns the entire footer; never append Save & exit as a separate row. See
DESIGN.md.
10. Pull Request Requirements
When creating a pull request (via gh pr create or any other method), you must read and fill in every section of .github/PULL_REQUEST_TEMPLATE.md. Do not craft ad-hoc PR bodies — use the template as the structure for your PR description. Required sections:
- Thinking Path — trace reasoning from project context to this change (see
CONTRIBUTING.mdfor examples) - What Changed — bullet list of concrete changes
- Verification — how a reviewer can confirm it works
- Risks — what could go wrong
- Model Used — the AI model that produced or assisted with the change (provider, exact model ID, context window, capabilities). Write "None — human-authored" if no AI was used.
- Checklist — all items checked
11. Definition of Done
A change is done when all are true:
- Behavior matches
doc/SPEC-implementation.md - Typecheck, tests, and build pass
- Contracts are synced across db/shared/server/ui
- Docs updated when behavior or commands change
- PR description follows the PR template with all sections filled in (including Model Used)
Design system
DESIGN.md at the repo root is the source of truth for UI design decisions. The token-only rule applies to all ui/ changes: every color, spacing, radius, type, shadow, and motion value in ui/src/components/** and ui/src/pages/** comes from the token layer in ui/src/index.css — no hex, raw px, arbitrary Tailwind bracket values, or raw font-size/fontSize declarations in components, outside the documented allowlist in ui/src/index.css. Run pnpm check:token-gates (scripts/check-token-gates.mjs) before committing UI changes — it fails on any violation not covered by that allowlist.