MCP server

Mark

dev.tatastu/proof

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Mark: stamp files with a signed, timestamped provenance record. Hash locally; verify free.

Website

At a glance

Type

MCP server

Publisher

tatastu.dev (verified by the MCP Registry)

Status

Working at last check

Tools

9

Token cost

About 1,965 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http proof https://makemark.io/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.proof]
url = "https://makemark.io/mcp"

Gemini CLI

{"mcpServers":{"proof":{"httpUrl":"https://makemark.io/mcp"}}}

Cursor

{"mcpServers":{"proof":{"url":"https://makemark.io/mcp"}}}

VS Code

{"servers":{"proof":{"type":"http","url":"https://makemark.io/mcp"}}}

Antigravity

agy mcp add proof https://makemark.io/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"proof","server_url":"https://makemark.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"proof","server_url":"https://makemark.io/mcp"}

Tools

• buy_stamps Moves money · ~222 tokens
  Start a purchase of prepaid stamps for your key (requires API key). Returns `url`: a Stripe Checkout link that a PERSON must open and pay; you cannot pay it yourself. Show the link to your user, then poll get_balance. The stamps land on this key's account and never expire. Packs: 5 for $1.00, 10 for
• create_account Changes accounts · ~252 tokens
  Provision a persistent API key with no human, browser, or email in the loop. Call this once, store the returned `secret` (shown only this one time), and use it as the Authorization header on every later call: create_proof, list_proofs, revoke_proof, get_balance, buy_stamps (verify_proof needs no aut
• create_proof ~723 tokens
  Stamp content with a permanent provenance record. Pass the sha256 hash of the content (hash it locally; the content itself is never uploaded). Returns an instant signed receipt: attach its verifyUrl, byline, badgeEmbed, and qrUrl to the published artifact. The receipt's `publisher` field carries the
• get_balance ~112 tokens
  Your key's stamp balance (requires API key): plan, included monthly stamps used and remaining, prepaid stamps (`balance`), whether a free stamp is still unused (`lifetimeSampleAvailable`), and recent pack purchases. Poll this after a person pays a buy_stamps link; credits usually arrive within secon
• grant_access Changes accounts · ~151 tokens
  Grant a specific identity the ability to decrypt escrowed content. Only available for proofs created with content escrow opted in (not yet available — stamps are hash-only today). Returns a capability token the grantee uses with reveal.
• list_proofs ~56 tokens
  List your recent stamps (requires API key).
• reveal ~154 tokens
  Retrieve escrowed content for a proof you have been granted access to. Only available for proofs created with content escrow opted in (not yet available — stamps are hash-only today). The service re-checks H(content) == stampedHash before returning.
• revoke_proof Changes accounts · ~80 tokens
  Revoke a stamp you created (forward-only: anchored history stays verifiable, but the proof is marked revoked from now on). Requires API key.
• verify_proof ~215 tokens
  Verify content against all existing stamps. Pass a sha256 hash; matching is EXACT-BYTES-ONLY. Read the verdict fields: `exact` (these bytes are stamped), each proof's `publisher` (the verified identity: domain/handle + tier, or null meaning an unverified account, never trust a name that isn't in `pu

Browse

• Stripe tools
• Website screenshots
• Email
• Payments

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