State ReliableTheory audit N/ALast updated 2026-04-26

4.2 API gateway

The public REST surface served at prova.network/api/*. The gateway is a Cloudflare Pages Functions deployment that fronts the marketplace, the staging backend, and the user-facing token system.

The full reference (every endpoint with examples) is on the docs site at docs.prova.network/api. This section is the spec — what each endpoint commits to.

4.2.1 Base URL

https://prova.network/api

All endpoints accept and return application/json unless explicitly noted (uploads accept any content-type; piece retrieval through /p/{cid} returns the original bytes).

4.2.2 Authentication

Bearer-token only. The gateway MUST NOT accept ?token= query-string authentication on any endpoint (closed; F-02 in the security audit).

Authorization: Bearer <pk_live_…>

Tokens are JWTs signed with HMAC-SHA-256 over the gateway secret. Token lifetime: 1 year, with a published revocation list. Token issuance is described in §4.2.4.

4.2.3 Origin / CSRF guard

Mutating endpoints (POST, PUT, DELETE) MUST verify the Origin or Referer header against a same-site allowlist:

• prova.network
• www.prova.network
• *.prova-network.pages.dev (preview deploys)

CLI / SDK callers without an Origin header MAY be allowed only on endpoints that accept Bearer authentication.

4.2.4 Magic-link sign-in

Two-step flow:

POST /api/auth/start  { email, label?, returnUrl? }
  → 200 { sent: true, email, expiresIn: 900, challenge }

POST /api/auth/verify { challenge } | { email, code }
  → 200 { token, userId, email, scopes, quotaMb, expiresAt, returnUrl }

/start is rate-limited to 5 per IP and 5 per email in any 15-minute window. The challenge is single-use and burned on verify (regardless of success). The 6-digit code has at most 5 attempts before the challenge is invalidated.

4.2.5 Upload

POST /api/upload?cid={piece-cid}
Authorization: Bearer <pk_live_…>   (optional; without auth, sponsored tier)
Content-Type: <mime>
X-Filename: <filename>

<binary body>

Constraints:

• The cid query parameter MUST be a Filecoin piece-CID (matches ^baga[a-z0-9]{4,76}$). Older bafy… SHA-256 stubs are rejected with 400 invalid_cid.
• File size limits:
  • Sponsored (no auth): 100 MB / file, 200 MB / IP / 24h
  • Authenticated: 5 GiB / file, daily quota per token
• The gateway MUST reject the upload with 422 cid_mismatch if the bytes received don't hash to the claimed CID.
• The gateway MUST consult an IP ban list before processing.
• Per-IP rate limit: 60 upload calls per minute.

Successful response:

{
  "cid": "baga6ea4r…",
  "dealId": "d-0x…",
  "size": 12345,
  "retrievalUrl": "https://prova.network/p/baga6ea4r…",
  "term": "30 days",
  "sponsored": true,
  "owner": null
}

4.2.6 Retrieval

GET /p/{cid}
HEAD /p/{cid}

Streams the piece bytes from the staging backend. Headers MUST include:

• x-prova-piece-cid: <cid>
• x-prova-verified: 1 if the staging server recomputed the CID at intake
• x-prova-source: stage (or r2 once R2 is enabled)
• content-disposition: attachment; filename=… for non-media types
• content-security-policy: default-src 'none'; sandbox for served bytes
• x-content-type-options: nosniff

The retrieval is publicly accessible; no authentication required.

4.2.7 User endpoints

Endpoint	Method	Purpose
/api/usage	GET	Quota usage for the bearer token
/api/files	GET	List files owned by the bearer token's user
/api/tokens/list	GET	List active tokens for the user
/api/tokens/revoke	POST	Revoke a token by its jti

All require Bearer auth.

4.2.8 Abuse reporting

POST /api/abuse/report  { cid?, url?, reason, contact? }
  → 200 { received: true, reportId, detail }

Public, unauthenticated. Rate-limited to 10 reports per IP per hour. Reason MUST be ≥ 20 characters. Either cid or url MUST be provided.

The report is logged to KV with a 1-year TTL and forwarded to hello@prova.network via Resend if configured.

4.2.9 CSP and security headers

Every response from the gateway MUST include the global security headers set by _middleware.ts:

• content-security-policy (allowlists self + jsdelivr + unpkg for known third-party scripts)
• x-content-type-options: nosniff
• x-frame-options: DENY
• referrer-policy: strict-origin-when-cross-origin
• permissions-policy: camera=(), microphone=(), geolocation=(), payment=(), usb=()
• strict-transport-security: max-age=63072000; includeSubDomains; preload
• cross-origin-opener-policy: same-origin
• cross-origin-resource-policy: same-site

4.2.10 Source

website/functions/api. Every endpoint above maps to a *.ts file in that directory.