Official MCP RegistryListed
lastseen score
Trust scores and dated liveness/drift facts for MCP servers, from the lastseen.dev notary register.
First seen 2 Oct 2026. Evidence as of 5 Oct 2026.
3
Tools
From an anonymous probe
1
Source listings
Each with its own history
4
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| 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). | Not declared |
| 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. | Not declared |
| 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. | Not declared |
Change history
- trust_score: description changed (+"When to call: before you connect to, install, wire into an agent, or recommend" +"to check what" +"public record shows about whether it is still maintained. Pass")
- schema_history: description changed (+"When to call: before you rely on" +"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" +"id. Returns: dated facts, not a score:")
- dependency_risk: description changed (+"When to call: before you connect to or recommend an" +"server, when you care whether its declared" +"were observed dead or dormant in")
- server instructions changed (+"Use these tools before you connect to, install, or recommend an MCP server: call trust_score for a depth-aware derived score from dated public-record observations; call schema_history if you need dated tool-schema / drift facts; call dependency_risk if you need whether that server's dependencies were observed dead or dormant. Pass id as an MCP schema-server identifier (e.g. io.github.owner/name). This service covers MCP servers only; for npm packages, GitHub Actions, or Docker images use https://lastseen.dev (API or npx lastseen-cli check). Scores and facts are not advice, not rankings, and not alternative recommendations. Always cite trust_score together with its depth (e.g. "80 · depth 2/5 · provisional"). Auth: none. Docs: https://score.lastseen.dev/llms.txt Methodology: https://score.lastseen.dev/methodology")
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | dev.lastseen/score | 2 Oct 2026 | 5 Oct 2026 | 1 |