MCP server health, State of MCP census
Rubrkit
com.rubrkit/rubrkit
MCP-native AI evaluation: rubric audits, eval suites, and proof reports for AI/LLM output.
- repo_404
Checks
The exact rows akashi check com.rubrkit/rubrkit prints, from the 2026-08-03 census.
| Check | Status | Detail |
|---|---|---|
| registry status | pass | active |
| server.json valid | pass | validates against its declared JSON Schema |
| repo reachable | fail | 404 (repository gone) |
| remote reachable | pass | HTTP 200 via initialize |
| MCP conformance | pass | initialize handshake ok |
| tools/list | pass | 41 tools: rubrkit_search_api_docs, rubrkit_read_api_doc, rubrkit_read_openapi_contract, rubrkit_create_artifact_bundle, rubrkit_list_artifact_bundles, rubrkit_read_artifact_bundle, rubrkit_delete_artifact_bundle, rubrkit_hard_delete_artifact_bundle, ... |
| at least one live entrypoint | pass | 1 alive |
| spec 2026-07-28 | warn | needs-migration: no server/discover, routing headers not enforced |
Spec 2026-07-28 readiness
Verdict: needs-migration(no server/discover; routing headers not enforced). Measured against the 2026-07-28 specification (ruleset 2026-07-28-rc, compiled from the draft and re-diffed against the final text with no verdict-bearing rule changed) with read-only, keyless calls; see the ecosystem readiness report for how this server compares.
| Accepts handshake-free calls | yes |
| server/discover implemented | no |
| Session independence | yes |
| Routing headers enforced | unknown |
Advisory: no resultType on results; no cache metadata on list results; negotiates 2025-06-18.
Evidence
Packages
No packages declared.
Remote endpoints
- https://www.rubrkit.com/api/v1/mcp
streamable-http · reachable· HTTP 200· initialize_ok
41 tools: rubrkit_search_api_docs, rubrkit_read_api_doc, rubrkit_read_openapi_contract, rubrkit_create_artifact_bundle, rubrkit_list_artifact_bundles, rubrkit_read_artifact_bundle, rubrkit_delete_artifact_bundle, rubrkit_hard_delete_artifact_bundle, ...
server.json
validagainst its declared schema
One of 19804 servers in the 2026-08-03 State of MCP census: 15974 healthy (80.7%), 2792 degraded (14.1%), 851 dead (4.3%), 187 unknown (0.9%).
Verify it yourself
This page is a static read of one dated probe. Run the same check locally, any time, with no key:
$ akashi check com.rubrkit/rubrkitInstall Akashi - single Go binary, zero keys, MIT licensed.
Is this your server?
Claiming a server (an auto-refreshing badge and a verified publisher profile) is coming soon. Until then, embed the verified-on-date badge yourself with akashi check com.rubrkit/rubrkit --badge.
Open data, CC BY 4.0. How this census works - denominator, tiers, and what each check does.