# io.github.theoddden/stamp

> Concierge MCP for agentic workflows: verified time + drift, uuid, diff, calc, attest, verify.

- name: io.github.theoddden/stamp
- version: 0.6.1
- connection class: R0 (autonomous)
- trust: 91/100
- quality: 74/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.theoddden%2Fstamp
- tools: https://api.protogrid.dev/v1/servers/io.github.theoddden%2Fstamp/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "stamp": {
      "type": "http",
      "url": "https://stamp-mcp.terradev.cloud/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 85
- provenance: 80
- drivers: +repository +namespace-matches-repo +reachable +uptime-100% ~updated-38d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 74/100 (needs work)

### 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: 71 (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
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: diff (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); attest (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_time (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 606 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: 50 (weight 15)

- fail `deps.known_vulns`: 2 advisories to act on (malicious, or rated high or critical with a fix available): GHSA-2g87-pp6c-29x5 in aiohttp@3.14.3 (direct, fixed in 3.14.4), GHSA-5wr8-gcqf-gqf3 in aiohttp@3.14.3 (direct, fixed in 3.14.4); 1 more of lower severity or without a fix
- n/a `deps.mcp_sdk_version`: the official MCP SDK is not in the dependency graph
- pass `deps.resolvable`: stamp-mcp@0.6.1 resolved: 10 packages

- tools: 6, about 606 tokens to load them all
- tool set hash: a0f6fa7ea3951ade866c6b6e540ca9ae
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.theoddden/stamp.svg)](https://protogrid.dev/servers/io.github.theoddden/stamp)
- 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._

## Dependencies

- pypi stamp-mcp@0.6.1: resolved, 9 dependencies
  - GHSA-2g87-pp6c-29x5 (high) in `` aiohttp@3.14.3 ``, direct, fixed in `` 3.14.4 ``, advisory summary: "aiohttp: Multiple instances of excessive or unbounded memory/CPU use" https://osv.dev/vulnerability/GHSA-2g87-pp6c-29x5
  - GHSA-5wr8-gcqf-gqf3 (high) in `` aiohttp@3.14.3 ``, direct, fixed in `` 3.14.4 ``, advisory summary: "aiohttp server lacks an initial request/header timeout" https://osv.dev/vulnerability/GHSA-5wr8-gcqf-gqf3
  - GHSA-494j-54xm-rwp3 (low) in `` aiohttp@3.14.3 ``, direct, fixed in `` 3.14.4 ``, advisory summary: "AIOHTTP: Secure attribute not enforced for shared cookie" https://osv.dev/vulnerability/GHSA-494j-54xm-rwp3

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0.

## Remotes

- https://stamp-mcp.terradev.cloud/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

- pypi stamp-mcp@0.6.1

## Tools (6)

- `attest`: Wrap any payload in a tamper-evident record: a UUID, a timestamp (NTP-verified when reachable, local clock otherwise -- the record says which), and a sha256 over the canonical record. One call, the record is complete and tamper-evident.
- `calculate`: Evaluate a math expression safely: + - * / // % **, parentheses, functions (abs round min max sqrt floor ceil exp log log2 log10 pow sin cos tan), constants pi e tau inf. Parsed to an AST and only whitelisted nodes are computed -- no eval(), no names, no arbitrary code.
- `diff`: Unified diff between two texts, with added/removed line counts. For reviewing edits, comparing outputs, or validating transformations.
- `generate_uuid`: Generate one or more random UUIDv4 identifiers -- for records, sessions, and IDs created in agent pipelines.
- `get_time`: Query an NTP server for current UTC time and this clock's offset. Appends the sample to the drift log and returns the trend inline: current offset, drift rate (ms/day), and whether the clock is stable, drifting, or accelerating.
- `verify`: Check a record produced by attest: recompute the sha256 over the record and compare. Pass/fail -- did this payload produce this hash at this timestamp. Any modified field breaks it.