Leppy Loop for DeepSeek Harness
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Leppy Loop is a native external Cordis bundle that executes a tracked Markdown checklist with a fresh DeepSeek Harness process and session for each worker line. The controller owns Git synchronization, the isolated worktree, checklist transitions, closure, gates, durable recovery state, and process leases. Ordinary workers own the entire isolated repository: declared paths= are context rather than enforcement, local commands and Git are available, and generated or ignored files never stop adoption. Only the controlling checklist and remote publication remain outside worker authority.
Version 0.3.54 is pinned to DeepSeek Harness 0.1.1-rc.2, upstream commit b150a551b8d465e31e418e1b2eaf5e79bbb7d28e. It registers a Host-side /leppy-loop command, an always-discoverable grant-validated controller tool, a model-only leppy-loop-operator lifecycle skill that cannot collide with the human command, and browser cards without patching Harness.
Install
Node 22.19+, Git, and pnpm 10.28.1 are required. DeepSeek Harness forwards plugin management to the pnpm found on PATH; pnpm 11 requires a separate native-build approval step and is not claimed as an install-compatible combination for 0.3.54. Configure the credential for the model provider selected in the Harness Models page, then build and install the tarball into the profile used by the Web host. Workers reuse that provider, model profile, and credential automatically; DEEPSEEK_API_KEY is not required when another provider is selected:
pnpm install --frozen-lockfile
pnpm gate
pnpm pack
npx @deepseek-ai/dsh@0.1.1-rc.2 plugin --profile web add ./leppy-loop-deepseek-0.3.54.tgz
Restart the existing dsh web process after changing its profile. A browser refresh cannot compose a newly installed Host plugin. A published GitHub Release tarball may replace the local .tgz path; there is no claim of publication in a plugin registry.
Quickstart
Create and commit a tracked checklist such as examples/feature.task.md, then invoke one lifecycle with ordinary human language — never paths, refs, run IDs, fingerprints, scopes, cycles, or repair flags:
/leppy-loop
/leppy-loop finish the capability adoption and open a pull request
/leppy-loop run this locally; do not publish
/leppy-loop status
/leppy-loop stop
The slash command returns after minting one lifecycle permit and queues one short AI resolver turn. The same permit can drive up to sixteen sequential controller transitions for one session, canonical repository and run, so the AI can resume recoverable work, choose bounded gate repair, reconcile publication and react to background completion without asking the human for phase-specific slash commands. Once all sixteen are consumed, only a fresh direct-human invocation may append a zero-consumption next budget epoch for that exact run, after live-job, repository-lock and signed-lease settlement; the model cannot reset it. Exactly one transition may be in flight. Once bound, the permit uses an HMAC required-marker, chained receipts, and an authenticated monotonic head: admissions persist before job start, local-only downgrade before slash acknowledgment, and Stop revocation before kill. It rehydrates after a Host restart; append-only Host-owned high-water anchors under DSH_HOME reject coordinated local head/prefix rollback, corrupt modern authority is quarantined, mutable run.json is never authority, and consumed transitions cannot replay after a crash; it still expires after 24 hours, cannot cross sessions/repositories/runs, and cannot widen repair scope, merge or deploy. Explicit do not publish/local-only language prevents publication during implementation. After completion Leppy asks once; an affirmative human answer signs a fresh same-run publication renewal that permits only controller-owned branch push and PR creation/reconciliation, never merge or deploy.
The globally discoverable leppy_loop_control tool receives technical checklist/base/run/recovery/publication facts while the human surface remains simple. Every existing-run resolver turn starts with read-only status; only when it returns no live job may one transition proceed. Status returns the exact authenticated checklist and base, and continue derives both controller-side when omitted instead of requiring the model to repeat or guess them. Read-only preflight validates canonical scopes and the authoritative base before start. The tool binds an unbound permit to the first run exactly once, validates every continuation against the live HMAC-authenticated controller, uses cumulative transition budgets, and transfers each transition into owner-fenced ctx.jobs. status never trusts a remembered job ID and exposes durable controllers only to their signed owning session: a durable running state without an owner-fenced Host job is reported as orphaned. Gate fingerprints, controller/checklist identity, receipts and bounded repair cycles remain controller-enforced; mutable workers otherwise own the isolated repository and still cannot push or invoke remote publication.
The default adaptive worker policy uses gpt-5.6-terra at high for ordinary OpenAI Codex tasks, then gpt-5.6-sol at low for closures and recovery of a stalled task. Terminal SDK availability failures receive up to three fresh autonomous recovery workers in the same controller job; only repeated runtime unavailability stalls with a receipt. Clean no-op completion closes the checklist directly, while dirty repository-wide work is adopted by the controller without requiring a ceremonial retry or manual commit. Inline model=/effort= metadata and CLI-only --model/--effort options take priority. Use --worker-policy selected, terra-high, or sol-low to choose another global behavior. The default transcript cap is 8192 KiB and remains configurable with --worker-transcript-limit-kb. Resume receipts include --recover-run <id> so recovery remains deterministic even when older failed runs still exist. Exact authenticated recovery resolves and lints the controller from the preserved run worktree, so a receiving source checkout may have switched branches, removed that checklist, or contain unrelated dirty changes; fresh runs still require a clean source checkout with a tracked checklist. A failed local phase gate automatically reopens its adjacent closure for up to three scoped AI repair cycles. If the unchanged gate still fails—or has no repairable closure—the controller commits the nonzero receipt as advisory evidence and advances in the same job instead of churning recovery transitions. Ordinary resume adopts HMAC-bound gate evidence after a controller crash without rerunning it. Older stalled controllers rerun the unchanged gate exactly once with repair disabled to mint current evidence; dirty/moved worktrees and missing, malformed, forged, or mismatched authenticated evidence fail closed. Pre-existing root or nested Svelte validation caches are automatically quarantined under HMAC, restored byte-for-byte after the gate, and recovered after a crash, so generated manifest churn needs no operator ceremony and cannot erase ignored WIP. Explicit retry or repair remains available within the same active lifecycle permit when deliberately selected. When a failed gate proves the original closure omitted required generated artifacts or dependencies, a direct human may add existing worktree scopes with --repair-path <path...>; these additions are validated, persisted, receipted, and granted only to that reopened repair worker. Worker root commands may omit cwd or use cwd=".", while changed-file commit validation remains limited to the effective scope. A direct repair invocation chains up to three fresh closure/gate cycles by default, passing each newly failed receipt to the next worker; --repair-cycles <1..8> changes this hard bound. It stops immediately on success, worker failure, dirty state, changed fingerprint, cancellation, or exhaustion rather than looping indefinitely. The autonomous resolver must report a stalled/failed result and stop; it may never edit the preserved worktree, delegate a repair, publish, or integrate around the controller. Supplying an exact run ID may also continue a completed selective run on the next open checklist row in its preserved branch/worktree; completed runs are never chosen implicitly.
For ordinary tasks and closures, LEPPY_OUTCOME, validation results, and Git ceremony are advisory telemetry. Missing or malformed reports degrade to prose evidence; ordinary blocked/failed dispositions do not stop adoption unless the worker explicitly emits disposition: "implementation-impossible". Tool-failure limits provide turn backpressure, while the controller preserves safe work and may launch fresh bounded workers. Failed local phase-gate results remain visible advisory evidence after bounded repair; publication conflicts and final publication gates, lifecycle authority, checklist integrity, and unmerged Git state remain strict.
The controller reconciles ordinary work from controller-observed Git state before interpreting model ceremony. It rejects only unmerged state or branch/checklist drift, stages repository-wide WIP, and creates, amends, or consolidates one conventional commit. Ignored/generated state is not an adoption invariant; legacy authenticated pending or interrupted commits are adopted directly without a detached ordinary validation worker.
On Windows, direct Playwright validation cannot create its nested libuv named pipes inside the Harness WRITE_RESTRICTED token. Leppy reports LEPPY_WINDOWS_NAMED_PIPE_UNAVAILABLE after the first authenticated playwright call instead of retrying or hiding the argv. The failure remains visible as advisory evidence; the ordinary controller may adopt repository-wide work without detached verification. WSL2 + bubblewrap remains an opt-in validation executor with no unconfined fallback. Configure either portable tracked .leppy-loop.json or Host-local uncommitted .leppy-loop.local.json (the local file takes precedence). Fresh-run source cleanliness admits only that exact bounded private untracked file; every other WIP entry still blocks startup:
{
"validationExecutor": {
"kind": "wsl2",
"distribution": "Ubuntu",
"envFile": ".env",
"envAllowlist": ["E2E_BACKEND_URL", "E2E_SYSTEM_KEY", "E2E_TENANT_URI"],
"envPrefixes": ["PUBLIC_"],
"envAliases": { "BACKEND_URL": "E2E_BACKEND_URL" },
"prepareScripts": ["prepare"],
"seedPaths": ["src/reflector/backup.json", "src/reflector/controllers", "src/reflector/enums.ts", "src/reflector/fields.ts", "src/reflector/mocked-params.svelte.ts"],
"webServerTimeoutMs": 600000,
"playwrightConfig": "playwright.config.ts"
}
}
The config names environment variables but never contains their values. The env source must resolve physically to one private regular file inside the exact repoRoot and be at most 64 KiB. The executor archives the authenticated pending commit OID and proves the candidate root/HEAD exactly; it does not mount the Windows worktree. Optional seedPaths accept only explicit Host-generated baselines ignored by tracked repository .gitignore authority and untracked in both candidate and source roots, then copy one stable handle-bound snapshot before archive extraction after rejecting destination symlink topology, links, hardlinks, special files, escapes, more than 10,000 files or more than 256 MiB; the result emits a SHA-256 receipt. Dependency install always uses npm ci --ignore-scripts; the canonical-registry lock entries, package identities, dependency edges and direct Playwright launcher are authenticated before the dependency tree becomes read-only, except for exact private Vite cache mounts, and before any explicitly named prepareScripts or prepareBins run. A bounded webServerTimeoutMs (180000–900000) requires the exact playwrightConfig path and creates a private wrapper for slower clean Linux builds without assuming TypeScript or editing candidate files. The selected distro's own wslpath resolves staging paths instead of assuming /mnt/<drive>. Inside WSL the capsule masks Host mounts, homes, mutable distro state and WSL interop, gives the candidate only private writable workspace/home/temp/cache, authenticates the live mount table and exposes only a minimal read-only distro runtime (/usr, toolchain libraries and /etc) with WSL submounts masked, and runs npm, the web server, Playwright workers and Chromium there. wsl.exe, the named distribution, Linux Node/npm, findmnt, and bubblewrap are explicit Host prerequisites. Network remains shared, matching the existing network non-goal.
pnpm gate runs the real Chromium/isolation/cancellation boundary automatically on Windows release Hosts with WSL2; non-Windows CI records an explicit platform skip. Run pnpm test:wsl-capsule directly for that boundary alone. The integration source remains excluded from the published runtime tarball.
Versions through 0.3.49 recorded an HMAC-bound snapshot of ignored paths before ordinary workers; 0.3.50 no longer invokes that machinery for mutable workers. After the worker settles, it classifies the full delta before mutation: unchanged pre-existing ignored WIP is preserved, changed/deleted/replaced WIP fails closed without moving anything, tracked promotion remains subject to normal candidate scope validation, and only baseline-absent regular-file leaves may be atomically renamed into private quarantine. The transaction reference enters authenticated active state before its first move. Crash recovery revalidates every source/destination pair, physical private root and parent, link count, fingerprint and same-device constraint before moving any entry. Legacy attempts without a stored snapshot recover only when the canonical empty digest applies or a bounded search finds an exact current fingerprint subset whose SHA-256 equals the authenticated non-empty baseline digest. Only an authenticated active task/attempt/baseline identity may use the anti-thrash migration bridge. Before a bridge job starts, the normalized terminal and full attempt identity enter an idempotent lock-protected HMAC prepared admission. The preparation binds its normalized request digest and target lifecycle epoch/transition, so pre-job failures retry without a worker and a receipt already at the final budget slot is reused rather than incremented; the runner requires it and atomically promotes it to consumed before reconciliation, after which replay is denied. The final baseline-only migration may include all current ordinary untracked paths in the exact historical subset proof, but never treats unproven ordinary paths as acceptable worker output: out-of-scope effects are discarded by the controller before adoption. Its base-rule classifier uses an isolated Git dir with empty mutable/global excludes, and one shared content budget covers all candidate classes. The exact predecessor no-match failure proves at most 39 fingerprints and may receive one four-addition/100,000-candidate migration; its canonical terminal can receive one promotion-aware migration that augments candidates only with exact paths newly tracked since the authenticated active-attempt base that remain ignored. That terminal can receive one base-ignore migration for current ordinary untracked paths proven ignored under byte-exact regular .gitignore blobs from the authenticated base. The base-ignore terminal receives one final migration for newly tracked paths that were ignored by those base rules but are no longer ignored now; rename detection is disabled so exact rename destinations remain Added candidates. Symlink/gitlink rules, checkout-transforming attributes, noncanonical path bytes and platform-ambiguous separators fail closed. Wider snapshots retain three additions/10,000 candidates. Input is capped at 128 KiB UTF-8 and cumulative candidate serialization/hashing at 512 MiB; candidate and quarantine content is independently capped at 512 MiB per streamed phase. Every mismatch or limit fails closed before receipts or movement.
Before releasing a worker, the controller materializes a usable npm tree itself. It first prefers an equal, structurally current source node_modules as an explicit trusted-local-state boundary. If that copy is unavailable, one non-workspace npm lock whose packages are pinned to credential-free HTTPS origins and supported integrity digests may be installed with the Host's own npm-cli.js in private staging; inBundle children are accepted only through an explicit recursive declaration chain ending at such an integrity-pinned tarball. That npm ci receives isolated configs/cache, an allowlisted environment, no lifecycle scripts/audit/funding, live process-tree cancellation and file/byte/depth quotas. Both paths reject unexpected packages/shims/hidden payloads, external links and hardlinks, validate the complete tree, and normally publish without replacing or deleting a target. For an authenticated ENOTCACHED or missing-module condition, the repository-locked runner may atomically quarantine an invalid existing target, materialize the exact worktree lock, publish and validate a new physical tree, then discard the quarantine. A durable identity-bound transaction adopts only its post-validation published phase; earlier crash/failure phases preserve the original quarantine, remove only an identity-proven controller target and retry without ever restoring over, deleting or replacing an unowned race. A pending transaction receipt resumes under the repository lock before worker release, and setup errors retain evidence. Missing, invalid, or interrupted dependency trees are repaired automatically without a separate digest-authorized lifecycle transition.
Mutable workers may execute any direct local argv inside the authenticated worktree sandbox; verification/publication workers remain narrow. Executable lookup prepends the authenticated root node_modules/.bin, resolves commands through the Host subprocess service, and uses the same scrubbed environment. Mutable workers may use package managers, dynamic frontends, dependency mutation, generators, local Git, and project-local caches when they judge those useful. Workers otherwise invoke already-materialized tools by bare name. For upgrade compatibility with runs created through 0.3.49, if an authenticated prior npx failure left a wholly untracked physical .npm-cache outside task scope, the repository-locked controller may move that directory—without deleting its bytes—into an HMAC-authenticated identity-bound quarantine transaction before resuming preserved task WIP. That compatibility path accepts only old signed receipts; no 0.3.54 worker creates a cache baseline or quarantine transaction. Tracked, staged, linked, ambiguous, recreated or identity-changed cache state stalls closed; cross-device artifact state is rejected before a receipt exists. Every receipt phase is reconciled before worker release, and a crash resumes the same transaction.
While a Web run is active, every selected row creates one durable progress card. Running, per-task attempt, and elapsed time use separate non-shrinking elements while only the long task label elides; terminal output settles the same card. Sequential rows and durable split replacement rows each begin at Attempt 1, while explicit recovery of the same unchanged row advances its local ordinal. The separate global attempt identity remains cumulative for leases, receipts, events, and bounded lifecycle recovery. A recovered interrupted row starts a new attempt card. The controller itself appears as a background card with status, elapsed time, and a Stop button. /leppy-loop status reports the exact owner-fenced active job first; a controller whose durable state says running without such a job is explicitly orphaned, never assigned a guessed leppy-loop-* ID. Otherwise it reports the newest authenticated controller regardless of whether work or publication stalled. Resolved stalls retain their bounded actionable detail instead of degrading to a generic failure. Browser timers write no per-second events or model tokens.
Publication first derives one exact GitHub repository from matching fetch/push URLs and reconciles an exact same-owner OPEN or MERGED PR before any rebase, gate or push; MERGED reconciliation may perform a read-only fetch to prove its merge commit remains in the live requested base. Otherwise it prunes and queries live remote refs instead of trusting stale tracking branches. A deleted configured base fails closed; the AI may provide a technical replacement branch only inside the same lifecycle, never a different remote, and the controller accepts it only when a durable prior target commit is incorporated into the live replacement. OPEN and MERGED PR reconciliation applies the same base/ancestry rule. All fetch, ls-remote and push operations use the validated literal URLs rather than a mutable remote alias. An already-pushed controller branch is updated only with an exact observed-OID force-with-lease; base OID, remote head, clean worktree and gate-validated HEAD are rechecked immediately before push and the remote head is verified afterward. PR lookup runs again before create to absorb races.
If the exact-OID rebase stops on conflicts, at most three fresh recovery workers receive exact-path read/write/delete access only to unmerged files, without commit or exec tools. The controller freezes HEAD and the complete Git index, rejects drift or out-of-scope edits, stages resolved conflicts itself, safely skips empty replay steps, and reruns the final gate. Existing exact PR reconciliation performs no remote mutation and lets a prior manual/open/merged PR settle durable Leppy state only after the controller reruns the strict final gate; local advisory evidence never suffices. Workers cannot push or use gh; Leppy never merges or deploys. Install and authenticate GitHub CLI first (gh auth status) before allowing publication.
Checklist contract
## API phase
- [ ] Add `src/api.ts` | Done: GET /health returns 200 | model=deepseek-v4-pro | effort=high
- [ ] Update docs | Done: README documents /health | paths=README.md
- [?] Closure: inspect API phase | paths=src,README.md
- [~] Gate: focused project gate
Marks and line types:
| Mark | Meaning |
|---|
[ ] | open ordinary worker task |
[?] | open phase closure worker |
[~] | open controller-only phase gate |
[x] | completed line of any type |
Ordinary tasks require a non-empty Done:. Optional paths=a,b metadata and path-shaped backticks provide non-binding context only; malformed hints still fail preflight, but absent paths and test scopes are accepted. The canonical pipe format is preferred, but indented Markdown continuations and the historical [closure]/[gate], Paths:, Paths EXATOS:, Paths permitidos: and multiline Done: forms are accepted. A [?] [human] or [?] [human/live] checkpoint is never sent to a worker: the run stalls with its preserved worktree until a human marks that row complete and recovers the exact run. The commit convenience capability stages ordinary repository-wide changes; ignored untracked files remain unstaged unless the worker explicitly targets them through local Git. --task-match is a literal substring, not a regular expression. A phase may omit closure, gate, or both; when both exist they must be adjacent and final among automated rows. Markdown outside checkbox markers is preserved byte-for-byte except for the file's existing newline convention.
A tracked root .leppy-loop.json may contain a string customInstructions; it is appended to the applicable AGENTS.md/CLAUDE.md instructions for every worker. Invalid shapes fail closed, the file is capped at 64 KiB, and the instruction string at 32 KiB. Dry-run results include all lint diagnostics through both the model-facing tool and direct command text.
Paths are resolved through filesystem identity. Traversal, absolute paths, and symlinks/junctions escaping the worktree are rejected. The controlling checklist is always denied to workers.
CLI startup options
These technical arguments are for the separately exported CLI startup composition, not the human Web slash interface.
| Option | Default |
|---|
--sync-max-seconds | 120 |
--worker-timeout | 30 minutes |
--max-iterations | 64 |
--worker-output-limit-kb | 192 KiB |
--worker-transcript-limit-kb | 8192 KiB |
--fetch / --no-fetch | fetch once |
--task-match <literal> | first open line |
--recover-existing-wip | disabled |
--provider, --model, --effort | Harness current selection |
--fallback-model | none |
--artifacts-dir | <git-common-dir>/leppy-loop/runs |
Models are strictly checked against ctx.llm.listModels(provider). Effort is checked against the exact model metadata returned by ctx.llm.resolveModelInfo. Runtime outcomes without an AI disposition receive up to three fresh recovery workers; an explicitly configured fallback is preferred for the first classified availability retry.
Execution semantics
- The source checkout and tracked checklist must be clean.
- The controller optionally fetches once, resolves
--sync-branch as the authoritative base, creates leppy-loop/<tasks>-<run-id>, and creates one sibling worktree. It never syncs again during the run.
- Each ordinary line gets a fresh worker process and SDK session with authority over the complete isolated repository. Report format, validation,
paths=, ignored state, and commit ceremony are advisory; only explicit implementation impossibility stops the row.
- Closure follows the same policy and may be a clean no-op. Repository-wide repairs are adopted automatically; generated and ignored effects never stall it.
- Gate has no ordinary worker. The controller executes the opaque command, writes a receipt, and on failure automatically reopens the adjacent closure for bounded repair before retrying the unchanged gate fingerprint. At the limit it HMAC-binds the receipt and advances with advisory evidence; ignored/generated local gate state is unrestricted, while publication always reruns its strict final gate.
Leppy differs from a generic Ralph loop by making a repository checklist the controller-owned state machine. Ralph commonly repeats one objective; Leppy selects one typed line, gives its worker an isolated repository, adopts the resulting Git state, and makes closure/gate explicit phase transitions.
Events
events.jsonl uses the versioned envelope:
{"schemaVersion":1,"type":"start","runId":"...","timestamp":"...","phase":"worker","taskIndex":0,"attempt":1,"data":{}}
The event type union is exactly:
run-start, start, done, recovery-start, recovery-done, gate-start, gate-end, stall, timeout, gate-failed, run-end.
The package exports runLeppyLoop, executeLeppyLoopCommand, parseLeppyLoopCommandInput, parseChecklist, lintChecklist, HarnessWorkerAdapter, LeppyLoopOptions, RunResult, RunPreview, and RunEvent.
Recovery
Durable state lives outside the worktree: run.json, runner.pid, events.jsonl, outputs, transcripts, receipts, diff summaries, resume.json, the ownership proof, and HMAC worker leases. A lock under git-common-dir prevents concurrent loops for the same repository.
On timeout, output limit, transcript limit, or interruption, WIP and the current open line are preserved. Resume with the original arguments plus:
--recover-existing-wip
Recovery adopts only one matching run whose ownership HMAC, branch, and worktree still match. A live worker is terminated only when its signed lease, PID, and process-start identity all match. No process is searched or killed by name.
Authentication and secrets
The bundle resolves DEEPSEEK_API_KEY from the Harness credential service and supplies it only to the model runtime environment. Tool subprocesses receive a credential-scrubbed environment. Events, outputs, transcripts, errors, headers, and credential-bearing URLs pass through recursive redaction.
Security boundary
This is practical isolation, not a network sandbox. A mutable worker owns the complete worktree except the controlling checklist. leppy_exec accepts any direct local argv under the official workspace-write sandbox, including Git, PowerShell, package managers, and generators. Remote push, PR mutation, publication, and deployment remain controller-only.
leppy_commit remains a convenience for one conventional commit. General local Git is also available, and the controller adopts repository-wide WIP and normalizes commit structure automatically.
The official sandbox does not confine network access. A malicious repository script already allowed as a focal test can still use network or perform behavior permitted by the OS account. Do not run Leppy Loop on untrusted repositories. See THREAT_MODEL.md.
Costs and limitations
Each line starts an independent context, so shared conversational cache is intentionally lost and model cost may be higher. Version 0.3.54 supports only the tested Harness pin. Network confinement, automatic push, PR mutation, release publication, package publication, and deployment are not provided. No remote action is automatic.
Uninstall
npx @deepseek-ai/dsh@0.1.1-rc.2 plugin --profile web remove leppy-loop-deepseek
Restart the Web host after removal. Remove a dedicated CLI profile separately if you created one. Worktrees and preserved WIP are never deleted automatically.
Troubleshooting
- Source checkout must be clean: commit or move your WIP; Leppy refuses to guess ownership.
- Model absent from catalog: use
--dry-run, then choose a model returned by the configured provider.
- Sandbox unavailable: install/repair the platform backend supported by Harness. The worker fails closed.
- Gate remains open after failure: fix the failure and invoke the command again explicitly; recovery does not replay gates.
- Recovery is ambiguous: inspect the state directories and choose manually. Leppy will not adopt unprovable WIP.
- Commit rejected: changed files escaped the declared task paths, the checklist changed, the message was not conventional, or the tree was not clean.
Development
pnpm install
pnpm gate
The canonical gate includes the supported-host WSL capsule boundary, package inspection, and clean-profile install:smoke in addition to lint, typecheck, tests, build, and secret scan.
See ARCHITECTURE.md, CONTRIBUTING.md, and SECURITY.md.
License
Apache-2.0.
