proofetch

Verified extraction with proof per field.

CommunityOnlineAPI key requiredGlobalFreeCan modify data

What it can do

  • Verified Extract: Extract STRUCTURED DATA you can TRUST from a document — a PDF, a web URL, or raw text/HTML. Returns schema-valid JSON where every field is either backed by an exact source quote (pro

What data it sees

Do you need an account

An API key from the service settings is required

Verified extraction with proof per field. proofetch pulls structured JSON from PDFs, URLs and text — every value backed by an exact source quote (provenance) or honestly left null, never guessed. Each result is sealed in a cryptographically signed receipt you can verify yourself.

Tool: verified_extract — send a source + a JSON Schema, get clean data + per-field provenance + a signed receipt.

  • 🎯 Never guesses — unprovable fields are null, not fabricated
  • 🧾 Signed receipt (Ed25519) — verify it without trusting us
  • 💶 Pay only per verified field (€0.02); empty or unprovable fields are free

Get an API key (prepaid balance, from €5): https://vektoris.de/proofetch

How to connect

How to connect proofetch to Claude

The server address to paste into Claude settings:

https://proofetch--moritz-fni2.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect proofetch to ChatGPT

The server address to paste into ChatGPT settings:

https://proofetch--moritz-fni2.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect proofetch to Cursor

The server address to paste into Cursor settings:

https://proofetch--moritz-fni2.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (1)

Raw names from tools/list. Only developers need these.

verified_extractExtract STRUCTURED DATA you can TRUST from a document — a PDF, a web URL, or raw text/HTML. Returns schema-valid JSON where every field is either backed by an exact source quote (provenance) with a confidence score, or honestly null — never guessed. Each result is sealed in a cryptographically signed receipt you (or an escrow) can verify before paying. Use it whenever a wrong value would be costly: invoices, contracts, KYC/forms, or any document parsing. Billed per verified (PASS) field; unprovable or empty fields cost nothing.