# io.github.terradev-cloud/prism

> Stateless MCP gateway and OTel span-streaming bridge for hosted MCP servers.

- name: io.github.terradev-cloud/prism
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 94/100
- quality: 91/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.terradev-cloud%2Fprism
- tools: https://api.protogrid.dev/v1/servers/io.github.terradev-cloud%2Fprism/tools

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

## Connection (mcpServers)

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


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 80
- drivers: +repository +namespace-matches-repo +reachable +uptime-100% +updated-23d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 91/100 (strong)

### 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: 100 (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`: 3 of 3 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 373 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`: 3 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: 3, about 373 tokens to load them all
- tool set hash: 74a6c501f5377a65ebedf9a54b7a6f9b
- tools last changed: 2026-09-29T03:37:39.474Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.terradev-cloud/prism.svg)](https://protogrid.dev/servers/io.github.terradev-cloud/prism)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-09-29 `prism_metrics` removed
  - Dumps Prism's in-process counters and gauges — spans shipped, upstream errors, rate-limit hits, queue depth. Two formats: 'prometheus' (default, scrape-ready text) or 'json' (a {"series{labels}": value} object). Use 'prefix' to narrow to a metric family, e.g. 'prism_spans'.
- 2026-09-29 `prism_config` removed
  - Returns Prism's effective runtime configuration — upstream allowlist, rate limit, capture default, batching and queue tunables, public URL, and configured ingest endpoints. Secrets (admin token, destination credentials) are never exposed — only whether they are set.
- 2026-09-29 `prism_sessions` removed
  - Lists the MCP sessions Prism is currently tracing — session id prefix, upstream, client name, project, turn and error counts, and age in seconds. Use 'limit' to cap results (default 20, max 100) and 'upstream' to filter by upstream URL substring.

Full history: https://api.protogrid.dev/v1/servers/io.github.terradev-cloud%2Fprism/changes

## Remotes

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

## Packages

_none_

## Tools (3)

- `prism_help`: Returns connection instructions: how to set the upstream MCP server (X-Prism-Upstream header or ?upstream= query param), the query-param config keys for header-less clients, how destinations and the borrowed-token model work, and example client configs. Start here if you are an agent discovering Prism for the first time.
- `prism_info`: Returns Prism's service identity and runtime state: version, transport, public URL, capture default, and the number of MCP sessions currently being traced. Use this to confirm which Prism deployment you are talking to and whether it is healthy before configuring an upstream.
- `prism_ping`: Returns {"pong": true, "time": <unix seconds>} plus an optional echo of the 'echo' argument. Use to verify connectivity through the gateway before pointing it at an upstream MCP server.