# tithonus

> Signed time, Bitcoin-anchored notarisation and drand randomness for agents. No account.

- name: org.tithonus/mcp
- version: 3.6.0
- connection class: R0 (autonomous)
- trust: 95/100
- quality: 88/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/org.tithonus%2Fmcp
- tools: https://api.protogrid.dev/v1/servers/org.tithonus%2Fmcp/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "tithonus": {
      "type": "http",
      "url": "https://tithonus.org/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 97
- freshness: 100
- provenance: 85
- drivers: +repository +dns-namespace +website +reachable +uptime-91% +updated-13d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 88/100 (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: 93 (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
- pass `tools.annotations`: 5 of 5 tools declare readOnlyHint or destructiveHint
- warn `tools.directory_hints`: 1 of 5 tools declare all four hints; missing: tithonus_now (destructiveHint, idempotentHint); tithonus_lookup (destructiveHint, idempotentHint); tithonus_beacon (destructiveHint, idempotentHint); …
- pass `tools.token_cost`: about 635 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`: no 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: 5, about 635 tokens to load them all
- tool set hash: 71ca0fb85093f37147e016aeb16a3f7e
- badge: [![protogrid quality](https://protogrid.dev/badge/org.tithonus/mcp.svg)](https://protogrid.dev/servers/org.tithonus/mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://tithonus.org/mcp (streamable-http, auth none, reachable true, uptime30d 0.9137931)

## Packages

_none_

## Tools (5)

- `tithonus_beacon`: Get public randomness from drand (League of Entropy), relayed and signed by tithonus. Nobody, tithonus included, can predict or choose it. Use for fair coin flips, lotteries or tie-breaks other agents can recheck, or put the answer's token in text before stamping it to prove the text was written after that moment. Omit round for the latest.
- `tithonus_check`: Check a tithonus receipt link: is it genuine, and when was it stamped? Optionally give the text to confirm it is exactly what was stamped.
- `tithonus_lookup`: Find the earliest receipt for a sha256 hash, if it was ever stamped. Never creates a stamp.
- `tithonus_now`: Get a signed statement of the current UTC time from tithonus.org. It includes the latest drand round, so anyone can see it was made after that moment. Use when you need trustworthy current time, or proof of when you asked. Pass a fresh nonce to bind the answer to your request.
- `tithonus_stamp`: Notarise something so you can later prove it existed (or that you knew or said it) by now. Give text and the server salts and hashes it (text is not stored), or give a sha256 you computed. Returns a receipt link anyone can check. Stamping the same hash again returns the original receipt.