# stampthisfile

> Timestamp files in Bitcoin (OpenTimestamps): send a hash, pay per hash with x402, get a proof.

- name: io.github.stampthisfile/mcp
- version: 0.1.0
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 82/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.stampthisfile%2Fmcp
- tools: https://api.protogrid.dev/v1/servers/io.github.stampthisfile%2Fmcp/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "stampthisfile": {
      "type": "http",
      "url": "https://stampthisfile.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 99
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-99% +updated-18d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 82/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 79 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- warn `tools.annotations`: only 3 of 4 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_proof (destructiveHint, idempotentHint, openWorldHint); stamp_hashes (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_stamp (destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 821 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 1 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 4, about 821 tokens to load them all
- tool set hash: 55955a41c20eca5e09a4fff3e09910c4
- tools last changed: 2026-10-21T10:58:47.653Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.stampthisfile/mcp.svg)](https://protogrid.dev/servers/io.github.stampthisfile/mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-21 `verify_proof` changed (description)
  - before: Check an OpenTimestamps proof (from us or anyone) against the SHA-256 of a file. Returns valid with status complete (Bitcoin block and the time the file existed by), valid with status pending (not in Bitcoin yet), or invalid with a reason. Nothing is stored. Free.
  - after: Check an OpenTimestamps proof (from us or anyone) against the SHA-256 of a file. Returns valid with status complete (Bitcoin block and the time the file existed by), valid with status pending (not in Bitcoin yet), or invalid with a reason. A pending proof whose calendars have since committed it comes back complete with `upgraded: true` and the completed proof in `ots` (base64): save it in place of the pending one. Nothing is stored. Free.

Full history: https://api.protogrid.dev/v1/servers/io.github.stampthisfile%2Fmcp/changes

## Remotes

- https://stampthisfile.com/mcp (streamable-http, auth none, reachable true, uptime30d 0.9859155)

## Packages

_none_

## Tools (4)

- `get_proof`: The current .ots proof of one stamp, base64. Once get_stamp says complete, fetch it again: the complete proof carries the Bitcoin attestation and can be verified by anyone, without us. Save it next to the file as <file>.ots. Free.
- `get_stamp`: Status of one stamp: pending, complete (with the Bitcoin block height and time, and a statement of what it proves) or failed (not confirmed within 7 days). Free.
- `stamp_hashes`: Timestamp 1-100 SHA-256 hashes in Bitcoin. Paid per hash with x402: without a payment the tool returns an error whose structuredContent is an x402 PaymentRequired (x402Version 2, exact scheme, USDC on Base). Retry with the same arguments and the signed PaymentPayload in the request's _meta["x402/payment"] (the x402 MCP transport), or, if your client cannot set _meta, in the `payment` argument. The settlement comes back in _meta["x402/payment-response"]. Returns a batch with, per hash, the stamp id, a pending .ots proof (base64: save it now) and its ots_url, plus a receipt signed by us. Invalid input is never charged; retrying with the same payment and arguments returns the same answer without paying twice.
- `verify_proof`: Check an OpenTimestamps proof (from us or anyone) against the SHA-256 of a file. Returns valid with status complete (Bitcoin block and the time the file existed by), valid with status pending (not in Bitcoin yet), or invalid with a reason. A pending proof whose calendars have since committed it comes back complete with `upgraded: true` and the completed proof in `ots` (base64): save it in place of the pending one. Nothing is stored. Free.