Limpet MCP Server

small shell. long memory. Memory for AI coding agents that goes stale when your code does. Everything your agent learns about a codebase (decisions, verified facts, failed approaches, gotchas) survives every session, anchored to the actual code it describes, and flips to stale with the reason attached the moment that code moves on. One Rust binary, one SQLite file, standard MCP, zero network calls.

People who need memory tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in Rust.

VERIFIED ACTIVE

LAST COMMIT 2026-08-15 · ★ 2 · #250 OF 259 MAINTAINED MEMORY · VERIFIED 2026-08-25

MIT · 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 2026-07-03 - young repo, little track record yet

license MIT - declared in the repository

registry namespace io.github.KSym04 is GitHub-verified and matches the repo owner

02 · What Limpet can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.16.0 · 2026-08-15

The refinement loop (v0.16.0)

v0.15.0 · 2026-08-13

Freshness at scale, part 2 (v0.15.0)

v0.14.0 · 2026-07-16

Roadmap v0.15 refinement loop + staleness positioning pass · Sharpen the staleness positioning and add the v0.15 refinement loop · Add the truth layer, archival, and the adoption bridge (v0.14.0)

03 · Who maintains Limpet

limpet is maintained by ksym04. It's the only MCP server we track from this author; the repo dates to Jul 2026.

04 · Facts

repository
github.com/ksym04/limpet
category
memory - ranked #250 of 259 actively-maintained memory servers as of 2026-08-25.
release cadence
10+ releases in the last 90 days (latest 2026-08-15)
registry
io.github.KSym04/limpet (active, first published 2026-07-03 · 19 versions)

05 · Limpet FAQ

What is Limpet?

small shell. long memory. Memory for AI coding agents that goes stale when your code does. Everything your agent learns about a codebase (decisions, verified facts, failed approaches, gotchas) survives every session, anchored to the actual code it describes, and flips to stale with the reason attached the moment that code moves on. One Rust binary, one SQLite file, standard MCP, zero network calls.

Is Limpet still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-15 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

06 · Alternatives to Limpet

Alternatives to Limpet

Maintained memory servers if Limpet isn't the fit.

  1. Codebase Memory Codebase knowledge graph for AI agents - 159 languages, sub-ms queries, 99% fewer tokens. ★ 40,198 · 2026-08-23
  2. Tradememory Protocol MCP memory for AI trading agents. Store trades, recall similar setups, track strategy performance. ★ 1,412 · 2026-08-11
  3. Superlog Open-source agent that observes and fixes your application. Query logs, traces, metrics, incidents. ★ 1,394 · 2026-08-23
  4. Persome Local-first personal memory and model server for trusted MCP agents on macOS. ★ 1,314 · 2026-08-21
  5. Neo4j Memory MCP Neo4j Knowledge Graph Memory Server ★ 979 · 2026-04-10
  6. Projectmem Local-first memory + judgment layer for AI coding agents - warns before repeating failed fixes. ★ 750 · 2026-08-06

Pairs well with

Servers that cover what Limpet doesn't - only shown when the pairing reason fits the companion.

  1. Server Filesystem → filesystem companion filesystem · ★ 38,704
  2. X402 List MCP → filesystem companion filesystem · ★ 58

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