# lastseen score

> Trust scores and dated liveness/drift facts for MCP servers, from the lastseen.dev notary register.

- name: dev.lastseen/score
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 68/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/dev.lastseen%2Fscore
- tools: https://api.protogrid.dev/v1/servers/dev.lastseen%2Fscore/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "score": {
      "type": "http",
      "url": "https://score.lastseen.dev/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-96% +updated-21d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 68/100 (needs work)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 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: trust_score (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); schema_history (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); dependency_risk (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 605 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 50 (weight 15)

- pass `stability.changes`: 3 tool changes in 30 days
- fail `stability.rug_pull`: 3 tools kept their name but changed most of their description in 30 days; review before trusting them

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

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

- tools: 3, about 605 tokens to load them all
- tool set hash: fe1a8bd90aa1b5a26d59e1e2839c1f88
- tools last changed: 2026-10-05T14:43:06.914Z
- badge: [![protogrid quality](https://protogrid.dev/badge/dev.lastseen/score.svg)](https://protogrid.dev/servers/dev.lastseen/score)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-05 `dependency_risk` changed (description) **meaning changed**
  - before: An MCP server's dependencies and their mortality state (dead/dormant counts) from the register. Facts, not a score.
  - after: When to call: before you connect to or recommend an MCP server, when you care whether its declared dependencies were observed dead or dormant in the lastseen.dev register. Returns: dated facts, not a score: depends_on[], dead_dependency_count, dormant_dependency_count, n, provenance. Empty depends_on or zero counts means no dependency edges were on record for that id as of the response, not a guarantee of zero risk. Example: {"id":"io.github.06ketan/medium-ops"} id: MCP schema-server identifier whose dependency edges to inspect (e.g. io.github.owner/name).
- 2026-10-05 `schema_history` changed (description) **meaning changed**
  - before: Dated schema/tool-count observations for an MCP server (a series when known): first_seen, last_observed, drift events. Facts from the register, not a score.
  - after: When to call: before you rely on an MCP server's tools being stable, e.g. you are about to integrate it, pin tool names, or check whether the tool list changed under the same server id. Returns: dated facts, not a score: first_seen, last_observed, drift_events, n, and observations[] with observation_date, tools_hash, tool_count (may be null), changed. Use trust_score for the derived score and dependency_risk for dependency mortality counts. Example: {"id":"io.github.06ketan/medium-ops"} id: MCP schema-server identifier (e.g. io.github.owner/name). Same id space as trust_score.
- 2026-10-05 `trust_score` changed (description) **meaning changed**
  - before: Derived trust score (0-100) for an MCP server, computed from the lastseen.dev register's dated observations by a published method. The score carries DEPTH (how many of 5 dimensions were computable) BOUND INTO the number as `display`, e.g. '80 · depth 2/5 · provisional' — a depth-2 score answers a narrower question (mortality, not merit). Not a prediction, not advice. Methodology: score.lastseen.dev/methodology.
  - after: When to call: before you connect to, install, wire into an agent, or recommend an MCP server, to check what the public record shows about whether it is still maintained. Pass the MCP schema-server id. Returns: JSON with trust_score (0 to 100 or null), display (score · depth · provisional), depth/depth_max, per-dimension values (liveness, maintenance, adoption, spec_currency, dependency_health; null = unknown, never invented), effective_weights, resolution method/confidence, status (scored | unresolved | insufficient_data), methodology URL. Depth 2 answers mortality more than merit; cite display as-is. Not a prediction, not advice, not a ranking of alternatives. Example: {"id":"io.github.06ketan/medium-ops"} id: MCP schema-server identifier (e.g. io.github.owner/name or owner/name). Not an npm package name, Action slug, or Docker image.

Full history: https://api.protogrid.dev/v1/servers/dev.lastseen%2Fscore/changes

## Remotes

- https://score.lastseen.dev/mcp (streamable-http, auth none, reachable true, uptime30d 0.963964)

## Packages

_none_

## Tools (3)

- `dependency_risk`: When to call: before you connect to or recommend an MCP server, when you care whether its declared dependencies were observed dead or dormant in the lastseen.dev register.
Returns: dated facts, not a score: depends_on[], dead_dependency_count, dormant_dependency_count, n, provenance. Empty depends_on or zero counts means no dependency edges were on record for that id as of the response, not a guarantee of zero risk.
Example: {"id":"io.github.06ketan/medium-ops"}
id: MCP schema-server identifier whose dependency edges to inspect (e.g. io.github.owner/name).
- `schema_history`: When to call: before you rely on an MCP server's tools being stable, e.g. you are about to integrate it, pin tool names, or check whether the tool list changed under the same server id.
Returns: dated facts, not a score: first_seen, last_observed, drift_events, n, and observations[] with observation_date, tools_hash, tool_count (may be null), changed. Use trust_score for the derived score and dependency_risk for dependency mortality counts.
Example: {"id":"io.github.06ketan/medium-ops"}
id: MCP schema-server identifier (e.g. io.github.owner/name). Same id space as trust_score.
- `trust_score`: When to call: before you connect to, install, wire into an agent, or recommend an MCP server, to check what the public record shows about whether it is still maintained. Pass the MCP schema-server id.
Returns: JSON with trust_score (0 to 100 or null), display (score · depth · provisional), depth/depth_max, per-dimension values (liveness, maintenance, adoption, spec_currency, dependency_health; null = unknown, never invented), effective_weights, resolution method/confidence, status (scored | unresolved | insufficient_data), methodology URL. Depth 2 answers mortality more than merit; cite display as-is. Not a prediction, not advice, not a ranking of alternatives.
Example: {"id":"io.github.06ketan/medium-ops"}
id: MCP schema-server identifier (e.g. io.github.owner/name or owner/name). Not an npm package name, Action slug, or Docker image.