Veilfile MCP Server

Veilfile — private, ephemeral artifact hosting for AI agents

When a coding agent in CI or a cloud session produces a screenshot, log bundle, or HAR file for review, it needs a private URL to put it at — not a public repo. Veilfile is the sanctioned place: upload via API key (or MCP), get back an unguessable, expiring URL. Uploads are scanned for secret shapes and flagged (blocked only when the caller passes on_secret=reject; file contents are never logged).

• API: POST /api/v1/artifacts (multipart, Authorization: Bearer vlf_…) → {id, url, expires_at, size_bytes, secret_flags[]}. GET /a/<token> serves the file (the 256-bit token is the auth). List (bare JSON array) and revoke endpoints included.
• MCP: hosted server at POST /mcp (JSON-RPC over HTTP; tools upload_artifact, create_upload_url, list_artifacts, revoke_artifact), authenticated with a vlf_ key or an OAuth token.
• CLIs: veilfile on PyPI (cli/) and npm (npm/): login (device flow), logout, status, push, pull.
• Dashboard: signed-in pages at /app/, Django views on the same shell as the rest of the site: Overview (usage vs plan caps), Files (secret-flag notes
  • revoke), Keys (a new key is shown once), Connected apps and Billing (plan switching and the Stripe billing portal).
• Landing page: / (public). Agent docs: /llms.txt, docs/API.md, /docs/.
• Agents working on this repo: read AGENTS.md.

See SPEC.md for the product spec.

Plans

Yearly billing costs ten months' price, so two months are free. A yearly plan has the same limits as the monthly one.

The source of truth is backend/drop_core/plans.py (PLANS, and ANNUAL_PRICE_USD for the yearly prices; Stripe prices live in Stripe and the STRIPE_PRICE_* variables). backend/drop_core/tests_fix_docs.py fails when a doc or template states a different price or cap.

Quickstart (local dev)

# Backend
python3 -m venv venv && ./venv/bin/pip install -r backend/requirements.txt
export DJANGO_DEBUG=True DJANGO_SECRET_KEY=dev-only-key
./venv/bin/python backend/manage.py migrate
./venv/bin/python backend/manage.py createsuperuser   # dashboard login
./venv/bin/python backend/manage.py runserver          # :8000

Sign up at http://localhost:8000/accounts/signup/ (or log in), open /app/, create an API key, then:

curl -H "Authorization: Bearer vlf_..." \
     -F "file=@screenshot.png" \
     http://localhost:8000/api/v1/artifacts/

Environment variables

No secrets are committed to this repo. Copy the names below into a local .env (gitignored) or your host's env config. Billing is live in production (sk_live_..., live price IDs, Stripe Managed Payments); use a Stripe sandbox/test key only on a local or staging copy.

Without Stripe vars, checkout/switch/portal return 503 billing_not_configured and the dashboard shows a friendly note; everything else works.

Tests

Tests need DJANGO_DEBUG=True (the test runner refuses False) and a local database; it also forces local storage and strips STRIPE_*/AWS_*.

# Backend (the count changes; run it rather than trusting a number here)
cd backend && DJANGO_DEBUG=True DJANGO_SECRET_KEY=dev-only-key \
  ../venv/bin/python manage.py test
../venv/bin/python manage.py makemigrations --check --dry-run   # must report no changes

# CLIs
cd npm && node --test
cd cli && ../venv/bin/python -m unittest discover -s tests -t .

CI (.github/workflows/ci.yml) runs all of the above plus manage.py check --deploy, a production-settings collectstatic, and the browser checks in site-tests/ (jobs site, site-cloth, site-ink, site-reading, site-phone, site-forms, site-catalog and site-dashboard; see AGENTS.md, "Site checks") on every pull request to main (the browser checks skip a pull request that changes no page), and the backend and CLI checks on every push to it. It runs on GitHub-hosted runners, one machine for each job, with the jobs side by side (AGENTS.md, "Where CI runs").

Ops

• Deploy: Render Docker web service (serves veilfile.com), auto-deploys every commit to main after its CI checks pass, with a paid Postgres. render.yaml mirrors it. The container runs as a non-root user. Boot sequence (backend/entrypoint.sh): migrate --noinput (skipped when SKIP_MIGRATE=1), createcachetable, a background daily housekeeping loop, then gunicorn.
• Health check: GET /healthz returns 200 {"status":"ok"} after a SELECT 1, or 503. Set it as the Render Health Check Path.
• Daily housekeeping: the entrypoint loop runs sweep_expired, clearsessions, cleartokens, prune_funnel_events, prune_email_ips (clears send-log IPs after 90 days) and purge_expired_cache once a day. No separate cron job is needed. Uploads also trigger a small lazy sweep.
• TTL sweeper: python backend/manage.py sweep_expired deletes expired artifacts (files + rows). Idempotent. Prints swept=N bytes=N failed=N and exits non-zero when any storage delete failed (those rows are kept for the next run); --limit N / --time-budget SECONDS bound a run.
• Orphaned files: python backend/manage.py reconcile_storage lists stored objects with no artifact row; --delete removes them. Run it by hand, dry run first: --delete refuses when the database looks wrong (empty artifact table, more than 20% orphans, or R2 storage without PostgreSQL) unless you pass --force after checking the db= / storage= it prints.
• Billing resync: python backend/manage.py sync_stripe_billing (dry run; --apply to write) rebuilds workspace plans from Stripe. The Stripe setup steps are in the private ops repository.
• Deploy checks: manage.py check --deploy reports veilfile.W001-W006 misconfigurations (also logged at ERROR by every worker at boot).
• Local container: docker run needs DATABASE_URL=sqlite:////tmp/db.sqlite3 together with DJANGO_ALLOW_SQLITE=True (production mode otherwise refuses SQLite); /app/backend is read-only to the non-root user.
• Storage: Render's disk is ephemeral. Production must use DROP_STORAGE=s3 (Cloudflare R2).
• MCP registries: launch checklist in docs/REGISTRIES.md.

Project layout

backend/
  config/          Django settings/URLs (env-driven)
  drop_core/       Workspace, APIKey (vlf_), Artifact, plans, storage,
                   secret scan, agent API, key mgmt, device login, OAuth
                   glue, sweeper
  drop_billing/    Stripe checkout/switch/portal/status/webhook (live,
                   tax-inclusive, Managed Payments)
  drop_mcp/        MCP server (POST /mcp)
  blog/, docs/     Markdown-rendered Journal posts (and their feed) and Docs pages
  legal/           Terms, privacy policy, abuse reporting (Markdown)
  pages/           public-page registry, sitemap, component catalog, content checks
  static/          the new shell's CSS, JS, fonts and images
  dashboard/       the signed-in dashboard at /app/ (views, URLs, tests)
  templates/       shell.html, layouts/, chapters/ and components/, the Journal, Docs and legal pages, the form pages (sign in, device, OAuth), the dashboard and the error pages
cli/, npm/         Python and Node `veilfile` command-line clients
plugin/            Claude Code plugin (share-artifact skill)
docs/              API.md, llms.txt (served at /llms.txt), REGISTRIES.md,
                   superpowers/ (design specs and build plans)
site-tests/        browser checks for the new shell (CI jobs `site`, `site-cloth`, `site-ink`, `site-reading`, `site-phone`, `site-forms`, `site-catalog`, `site-dashboard`)
tools/             one-off font and image generators, run by hand
Dockerfile         one Python stage, WhiteNoise + gunicorn (the site has no build step)
render.yaml        Render deploy blueprint (mirrors the live service)
AGENTS.md          Rules and commands for agents working on this repo

License and contributions

The code is published so that anyone can read it and check what Veilfile does. All rights are reserved (LICENSE), except for the command-line clients in cli/ and npm/, which are under the MIT License. This repository does not accept pull requests from outside contributors. Issues are welcome, and a security problem should be reported privately with "Report a vulnerability" on the repository's Security tab.

Launch checklist

1. Create Cloudflare R2 bucket + API token (S3-compatible).
2. Create Stripe products/prices (Team $4, Team Plus $6, Scale $12, tax-inclusive) with product tax codes; note the price IDs.
3. Deploy on Render (see render.yaml); set env vars incl. DROP_BASE_URL, DATABASE_URL and the EMAIL_* SMTP settings; set the Health Check Path to /healthz.
4. Point the Stripe webhook at https://<host>/api/v1/billing/webhook; set STRIPE_WEBHOOK_SECRET.
5. Decide VEILFILE_SAFETY_MODE (log or enforce).
6. List the MCP server per docs/REGISTRIES.md.

Expired artifacts are swept daily by the entrypoint loop; no cron job is needed.