KosmoKrator

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Celestial MCP Integration for LangChain

Connect Celestial to LangChain through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

9 functions 9 read 0 write No credentials auth
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Connect Celestial to LangChain

Bridge LangChain agents to local KosmoKrator integration tools through MCP or headless CLI calls.

Use the MCP gateway when the agent should discover tools, or wrap kosmo integrations:call for fixed chains. The gateway is local, scoped to this integration, and starts with --write=deny so LangChain can inspect read-capable tools without receiving write access by default.

Celestial MCP Config for LangChain

Keep the gateway scoped to the integration and operation class needed by the chain.

{
  "mcpServers": {
    "kosmokrator-celestial": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=celestial",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=celestial --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Celestial instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Celestial Tools Visible to LangChain

LangChain sees stable MCP tool names generated from the Celestial integration catalog.

MCP toolSource functionTypeDescription
integration__celestial__celestial_moon_phase celestial.celestial_moon_phase Read Get current moon phase, illumination percentage, age, zodiac sign, and dates of next new/full moon.
integration__celestial__celestial_sun_info celestial.celestial_sun_info Read Get sunrise/sunset times, solar altitude/azimuth, twilight phase, day length, and zodiac position for a location.
integration__celestial__celestial_moon_info celestial.celestial_moon_info Read Get moon position, illumination, and visibility from a specific location.
integration__celestial__celestial_planet_position celestial.celestial_planet_position Read Get planet altitude/azimuth, zodiac position, and rise/set times. Set planet to "all" for an overview of all planets.
integration__celestial__celestial_solar_eclipse celestial.celestial_solar_eclipse Read Get solar eclipse data for a specific date and location — eclipse type, obscuration, contacts, and magnitude.
integration__celestial__celestial_lunar_eclipse celestial.celestial_lunar_eclipse Read Get lunar eclipse data for a specific date — eclipse type, magnitude, gamma, contact times (P1-P4, U1-U4), and semi-durations.
integration__celestial__celestial_night_sky celestial.celestial_night_sky Read Get what's visible in the night sky right now: sun/moon/planet positions, darkness level, and stargazing quality for a location.
integration__celestial__celestial_zodiac_report celestial.celestial_zodiac_report Read Get all celestial bodies mapped to zodiac signs with alignments for a given date.
integration__celestial__celestial_time_info celestial.celestial_time_info Read Get astronomical time data — Julian Day, sidereal time (GMST/GAST), and equation of time.

Related Celestial Pages

Celestial CLIUse direct JSON commands instead of MCP discovery. Celestial MCPFull gateway reference and MCP tool names. KosmoKrator for LangChainClient-level gateway setup.