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Gnosem MCP server

Which servers in the official MCP registry are Gnosem's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-26

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Whose server it is
  • Registry namedev.gnosem/gnosemverified in the MCP registry

The registry name sits under gnosem.dev. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-26
  • Stateanswerschecked 2026-10-26
  • Tools6
  • Server calls itselfgnosem
  • Server version0.1.0
  • Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 47 ms.

Should an agent connect itNot proven either way yet
  • Its tools do every use case we checked: save preferences once and reuse them across assistants; search stored memories by meaning; replace outdated memories with corrected versions.
  • Checked on 1 of the 7 days it takes to judge reliability.

Once connected

  • For "save preferences once and reuse them across assistants", the likely first call is memory_write.
  • For "search stored memories by meaning", the likely first call is memory_search.
  • For "replace outdated memories with corrected versions", the likely first call is memory_supersede.
  • memory_write, memory_write_bulk change data without a sign-in: anyone with the address can call them.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 1, the first on 2026-10-26
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
  • What an agent can do with it3 of 3 use cases
  • Answeredmeasuring1 of the 7 daily checks it takes to print a share
  • Median first answer70 ms
  • Space in an agent's context≈ 1,681 tokensthe definitions of all its tools (6), which an agent carries on every turn
  • Tool definitionsB · 81 of 100
  • Typed results0 of 6 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 1 of 6
  • Not saying whether it only reads or can destroy: 6 of 6

What an agent can do with it

  • can do · save preferences once and reuse them across assistants
  • can do · search stored memories by meaning
  • can do · replace outdated memories with corrected versions

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

  • Tools that change data, on a server that answers without a sign-in: memory_write, memory_write_bulk

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers6 tools · read 2026-10-26
  • memory_write

    Save a fact, preference, decision, or note to the user's cross-model memory. Any MCP client can read this back later. Include written_by (e.g. 'claude-code', 'gpt-5', 'kimi-k2') for provenance and session_id to group related writes. Long…

  • memory_search

    Search the user's memories. Default mode is 'hybrid': blends semantic (cosine over Vectorize) and keyword (BM25 over SQLite FTS5) hits via Reciprocal Rank Fusion (k=60). Semantic catches paraphrases; keyword catches exact-string hits…

  • memory_list

    List the user's most recent memories in reverse chronological order. Use for browsing or catching up on what the user's other model sessions have written recently. Same content/content_raw shape as memory_search. Optional filters (tags…

  • memory_forget

    Soft-delete a memory by id. The row is retained for audit but excluded from search/list and removed from the vector index.

  • memory_supersede

    Replace a stale memory with a corrected one. The old row is marked superseded and excluded from future reads; the new row becomes the current version. Use for corrections; use memory_forget for pure deletions.

  • memory_write_bulk

    Write up to 50 memories in a single call. Each entry runs the same path as memory_write (semantic dedup by default; pass force:true per-entry to skip). Embeddings + optimizations run in parallel; D1 inserts are batched. Returns { results…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "gnosem": {
      "type": "http",
      "url": "https://gnosem.dev/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http gnosem https://gnosem.dev/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://gnosem.dev/mcp as a custom connector in the settings.

OpenAPI spec

13 paths, read 2026-10-26. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.