Cosmos MCP

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/teampolarity-cosmos-mcp

About

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Nov 1, 2026.

Tools

4 read · 4 write · 0 delete · 4 not yet classified

Secrets

1 (API keys, tokens or passwords)

Install scripts

Runs code on install

Runs as

Node.js package

Tools (12)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• polarity_ask

  Ask a natural-language question over the user's personal knowledge graph. Cosmos synthesizes an answer from relevant nodes and edges. Use this when the user wants context-aware reasoning rather than raw data. Returns answer text plus cited node/edge ids.

• polarity_capture_turn

  This is how the user's cosmos graph learns from this conversation. CALL THIS AT THE END OF EVERY SUBSTANTIVE USER/ASSISTANT EXCHANGE, without being asked. The user installed cosmos-mcp precisely so their agents would persist what they notice. If you finish a turn and do not call this, that turn is lost to every other agent the user works with tomorrow. Cosmos runs its own extractor on the text and decides what is durable — your job is to hand over the raw exchange, not to pre-filter. Pass the user's message in `user_text` and your own reply in `assistant_text`. Skip only for trivial single-wor…

• polarity_checkin

  Record that the user checked in at a waypoint. Triggers co-presence detection against other users' recent check-ins.

• polarity_declare

  Declare future presence at a waypoint. `chip` is the time-window enum: next_30, next_hour, tonight, tomorrow_night.

• polarity_dump

  Write a short message tied to a location waypoint into the user's graph. PolarityGPS-style. Use only when the user is explicitly recording a place-anchored thought.

• polarity_export

  Export the user's full personal knowledge graph (nodes + edges + counts) as JSON in polarity/v1 format. Use this when the user asks for a snapshot of their exocortex, wants their data, or asks to download their .polarity file. Returns the full graph; can be large.

• polarity_get_graph

  Read the user's graph view. `entity` selects which projection: 'user' (the user's self-graph), 'cosmos' (the cosmos entity's view of them), or 'polarity' (the dyadic synchronization between the two). Use 'user' for general questions about what the user thinks, does, or knows. Use 'polarity' when comparing the user's self-image against the system's observation.

• polarity_observe

  Single-fact write into the user's personal cosmos graph. Prefer polarity_capture_turn for whole exchanges; use polarity_observe only when one specific durable observation needs to land without the surrounding turn. Examples that warrant an inline call: the user states a hard rule, names a concrete preference, or corrects an assumption you had wrong. Avoid logging ephemeral chat or your own reasoning. `source` should identify your client (e.g. 'claude-code', 'cursor', 'claude-desktop'). `kind` defaults to 'observation'; use 'event' for things that happened, 'preference' for stated likes/dislike…

• polarity_reconstruct_hours

  Persist life-hour receipts onto the skill map sky for this user only. Use from Cosmos IDE / Cursor after substantive work: newline-separated roles with dates when known (e.g. 'UMBC tutor Feb 2019-May 2022'). No product seed — only what this user earned. Returns fog status and star count. Prefer this over inventing biography; pair with polarity_capture_turn for conversation memory.

• polarity_record_event

  Record a structured event in the user's graph. Convenience wrapper over polarity_observe with kind='event'. Use for things that happened at a point in time: a meeting, a shipped release, a flight, an incident.

• polarity_record_preference

  Record a stated preference in the user's graph. Convenience wrapper over polarity_observe with kind='preference'. Use when the user expresses a like, dislike, opinion, or working-style rule that should persist across sessions.

• polarity_whoami

  Returns the polarity user id and cosmos account info that this MCP key is bound to. Cheap connectivity test. Call this first if the user asks who you know them as.

Signals

Stars

3

Forks

0

Open issues

1

Last commit

Aug 25, 2026 (2 months ago)

Last release

Jul 3, 2026 (4 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.teampolarity/cosmos-mcp

Version

0.7.1

Auth

API key

Packages

npm @polarity-lab/cosmos-mcp

License

MIT

Repository

github.com/teampolarity/cosmos-mcp

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql