Mushroomdb MCP Server
The graph that stays true - and knows who's allowed to see it. mushroomdb is the data layer for agents that reason over entities. It is an embedded Rust graph database in which a relationship is a schema declaration: write a rule once, and every write derives, maintains and retracts the matching edges, each one carrying the rule, the score and the values that produced it. An agent reaches it over MCP - fifteen tools…
People who work with cypher, database and knowledge graph and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Rust.
VERIFIED ACTIVE
LAST COMMIT 2026-09-17 · ★ 5 · #273 OF 304 MAINTAINED MEMORY · VERIFIED 2026-09-18
NOASSERTION · Rust servers · how we verify → /methodology
01 · Evidence
Security posture
What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.
repo age created 2026-08-14 - young repo, little track record yet
license no standard license detected - usage rights unclear; check the repo before commercial use
registry namespace io.github.MatthewSherlin is GitHub-verified and matches the repo owner
02 · What Mushroomdb can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
Latest releases
v0.6.9 · 2026-09-17
v0.6.9 - engine polish · upload release assets one at a time
v0.6.8 · 2026-09-16
v0.6.8 - sidecar exact reads
v0.6.7 · 2026-09-15
v0.6.7 - the hardening patch
03 · Who maintains Mushroomdb
mushroomdb is maintained by matthewsherlin. It's the only MCP server we track from this author; the repo dates to Aug 2026.
04 · Facts
- repository
- github.com/matthewsherlin/mushroomdb
- category
- memory - ranked #273 of 304 actively-maintained memory servers as of 2026-09-18.
- release cadence
- 10+ releases in the last 90 days (latest 2026-09-17)
- registry
- io.github.MatthewSherlin/mushroomdb (active, first published 2026-08-28)
- packages
- cargo:mushroomdb-cli
05 · Mushroomdb FAQ
What is Mushroomdb?
The graph that stays true - and knows who's allowed to see it. mushroomdb is the data layer for agents that reason over entities. It is an embedded Rust graph database in which a relationship is a schema declaration: write a rule once, and every write derives, maintains and retracts the matching edges, each one carrying the rule, the score and the values that produced it. An agent reaches it over MCP - fifteen tools…
Is Mushroomdb still maintained?
Yes - as of 2026-09-18, its last commit was 2026-09-17 and it shipped 10+ releases in the last 90 days. We re-verify nightly.
06 · Alternatives to Mushroomdb
Alternatives to Mushroomdb
Maintained memory servers if Mushroomdb isn't the fit.
- Codebase Memory Codebase knowledge graph for AI agents - 162 languages, sub-ms queries, 99% fewer tokens. ★ 43,715 · 2026-09-18
- Superlog Open-source agent that observes and fixes your application. Query logs, traces, metrics, incidents. ★ 1,449 · 2026-09-17
- Tradememory Protocol Tamper-evident decision audit trail and outcome-weighted memory for AI trading agents. ★ 1,419 · 2026-09-14
- Persome Local-first personal memory and model server for trusted MCP agents on macOS. ★ 1,322 · 2026-08-21
- Neo4j Memory MCP Neo4j Knowledge Graph Memory Server ★ 984 · 2026-09-09
- Projectmem Coding agent memory - one local MCP server for every project. Warns before repeating failed fixes. ★ 826 · 2026-09-15
Pairs well with
Servers that cover what Mushroomdb doesn't - only shown when the pairing reason fits the companion.
More memory MCP servers · Smart Memory · Acc Int · Compartment · Synap Memory · Ariadne (mclaut)
More Rust MCP servers · M1nd · N Memory · Tapo MCP · MCP Gateway · Acrawl · see all