Attestor MCP Server

Self-hosted memory for agent teams. Bi-temporal replay, deterministic retrieval, audit log.

People connecting memory tools to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-05-30 · ★ 14 · #146 OF 259 MAINTAINED MEMORY · VERIFIED 2026-08-25

MIT · Python servers · how we verify → /methodology

01 · Install Attestor

Claude Code

claude mcp add bolnet-attestor -- uvx attestor

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "bolnet-attestor": {
      "command": "uvx",
      "args": [
        "attestor"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · 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.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

pypi package attestor - check the name against the project README before installing (PyPI has no namespace ownership)

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

03 · What Attestor can do

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

Latest releases

v4.1.11 · 2026-05-26

Adds attestor recall --show-tokens: prints the packed token count of the recall payload so per-call recall size is visible (flat regardless of conversation length). Ships alongside the 4.1.10 uncapped budget.

v4.1.10 · 2026-05-26

Reverses the 2048 cap (4.1.9): recall budget set to 1,000,000 (effectively uncapped; still bounded by vector_top_k) so we observe real token usage before tuning. Applied to MCP default, CLI --budget, init config…

v4.1.8 · 2026-05-26

Every Docker container, volume, network, and the compose project is now named attestor_… - so docker ps -a | grep attestor, docker volume ls | grep attestor, and docker network ls | grep attestor list everything…

04 · Who maintains Attestor

Attestor is maintained by bolnet. We track 2 MCP servers from bolnet - 2 actively maintained, 28 combined GitHub stars, oldest repo from Mar 2026. Full record: all servers from bolnet.

memwright Embedded memory for AI agents with SQLite, pgvector, and Neo4j graph search. ★ 14

05 · Facts

repository: github.com/bolnet/attestor
category: memory - ranked #146 of 259 actively-maintained memory servers as of 2026-08-25.
registry: io.github.bolnet/attestor (active, first published 2026-04-27 · 4 versions)
packages: pypi:attestor

06 · Attestor FAQ

What is Attestor?

Self-hosted memory for agent teams. Bi-temporal replay, deterministic retrieval, audit log.

Is Attestor still maintained?

Yes - as of 2026-08-25, its last commit was 2026-05-30. We re-verify nightly.

How do I install Attestor?

Run `uvx attestor`. You can also paste the ready-made client config above.

Does Attestor run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Attestor

Alternatives to Attestor

Maintained memory servers if Attestor isn't the fit.

Pairs well with

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

More memory MCP servers · hmem - Humanlike Memory for AI Agents · Excalidraw Architect · Soulsketch · Memoir · Memorydetective

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