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BaseMouse

One MCP-served shared memory across Claude Code, Cursor, Codex, and Grok, MIT open-core

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freemiumDR 1Open core: the import-and-serve engine is free and MIT-licensed, self-hostable with no license key and nothing phoning home. A paid hosted version adds running, billing, and support, billed through Stripe; the hosted plan figures are rendered client-side and are not published in the page source.View full pricing →

About BaseMouse

BaseMouse gives AI agents one shared, versioned memory across Claude Code, Cursor, Codex, and Grok through a single remote MCP server. The problem it names is familiar to anyone using more than one coding agent: project context ends up trapped per tool — a CLAUDE.md here, a Cursor rules file there — and the whole project gets re-explained to every new agent. BaseMouse replaces that with one corpus every registered tool reads from and writes to, so whatever an agent learns in one tool is available to an agent in another, even a different vendor; only the live chat stays inside each tool. Setup is a folder of documents pointed at the service, which reads them, keeps every version, and labels them for retrieval, with re-imports that do not duplicate and a clear report on any file that fails to import. Retrieval returns the most relevant passages with source, a tamper-evident fingerprint, and recency, ready to drop into a prompt — and a get_context_pack tool returns an agent-shaped bundle with citations. Governance is a first-class concern: every change is recorded, nothing is silently overwritten, and even deletions stay on the record, so you can always answer where an answer came from and what changed since. The model is open core — the engine that imports documents and serves sourced answers is free and MIT-licensed and self-hostable with nothing phoning home, while the paid hosted version handles running, billing, and support.

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Key Features

✓Single remote MCP server at one endpoint for every registered tool
✓Shared read/write memory across Claude Code, Cursor, Codex, and Grok
✓Every answer carries its source, a tamper-evident fingerprint, and recency
✓get_context_pack returns an agent-ready bundle with citations
✓Version history preserved — nothing silently overwritten, deletions stay on record
✓Re-import a folder without creating duplicates, with a failure report
✓Public demo corpus browsable without a key
✓MIT-licensed self-hostable core

BaseMouse Pros & Cons

✅ Pros

  • +Open-core with an MIT engine means no lock-in on your own context
  • +Provenance and fingerprints let you verify what the agent was actually told
  • +One endpoint to register rather than per-tool config files to keep in sync
  • +Self-hosting keeps proprietary documents entirely in-house

⚠️ Cons

  • −Hosted pricing is client-rendered and not visible in the page source
  • −Still labelled revision 0.3 with a design-partner intake, so it is early
  • −Self-hosting means you run and secure the server yourself
  • −Only pays off if you genuinely use several different agent tools

Who Is BaseMouse Best For?

👤Developers switching between Claude Code, Cursor, and Codex on the same project
👤Teams tired of maintaining parallel rules files per tool
👤Anyone who needs to audit what context an agent was given

Tags

mcpagent-memoryopen-coremit-licenseself-hostedprovenance
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