MCP server health, State of MCP census
Perseus Vault (formerly Mimir/Mneme), persistent memory engine for AI agents
io.github.Perseus-Computing-LLC/mimir
Local-first MCP memory server: SQLite, FTS5 and vector search, AES-256-GCM. 55 tools, no cloud.
- repo_404
- registry_deprecated
Checks
The exact rows akashi check io.github.Perseus-Computing-LLC/mimir prints, from the 2026-09-13 census.
| Check | Status | Detail |
|---|---|---|
| registry status | warn | deprecated |
| server.json valid | pass | validates against its declared JSON Schema |
| repo reachable | fail | 404 (repository gone) |
| package oci | skip | ghcr.io/perseus-computing-llc/perseus-vault:2.15.0 not keyless-probeable |
| at least one live entrypoint | fail | nothing installable or reachable |
Spec 2026-07-28 readiness
No runtime readiness verdict: this server has no keylessly reachable conformant MCP endpoint (package-only, auth-gated, or down at census time), so its behavior against the 2026-07-28 revision cannot be measured without credentials. Absence of evidence is recorded as absence, never guessed. Ecosystem numbers: the readiness report.
Evidence
Packages
- oci ghcr.io/perseus-computing-llc/perseus-vault:2.15.0 · unprobed
Remote endpoints
No remote endpoint declared.
server.json
validagainst its declared schema
One of 31538 servers in the 2026-09-13 State of MCP census: 25411 healthy (80.6%), 4667 degraded (14.8%), 1184 dead (3.8%), 276 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 io.github.Perseus-Computing-LLC/mimirInstall Akashi - single Go binary, zero keys, MIT licensed.
Prefer the data? This page has a machine-readable record carrying the same checks, verdict and census date, under the same methodology.
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 io.github.Perseus-Computing-LLC/mimir --badge.
Open data, CC BY 4.0. How this census works - denominator, tiers, and what each check does.