MCP server wrapping the Brahe astrodynamics library
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# brahe-mcp <p align="center"> <a href="https://github.com/duncaneddy/brahe-mcp/actions/workflows/test.yml/badge.svg"> <img src="https://github.com/duncaneddy/brahe-mcp/actions/workflows/test.yml/badge.svg" alt="Tests"> </a> <a href="https://pypi.org/project/brahe-mcp/"> <img src="https://img.shields.io/pypi/v/brahe-mcp" alt="PyPI"> </a> </p> This project provides a Model Context Protocol (MCP) server that exposes the astrodynamics capabilities of the [Brahe](https://github.com/duncaneddy/brahe) library enabling language models to get smarter about astrodynamics and space situational awareness.  ## Capabilities Recent additions expose more of brahe's 1.7.0 astrodynamics surface as MCP tools: | Group | Tools | Notes | | --- | --- | --- | | Frame transforms | `list_frame_options`, `transform_frame` | Position/state/rotation transforms across GCRF, ITRF, EME2000, GSE, EMR, SER, EMBI, SSBI, lunar (LCI/LFME/LFPA), Mars (MCI/MCMF), the Synodic rotating frame, and generic body frames. | | SPICE & body ephemerides | `list_ephemeris_options`, `list_spice_kernels`, `load_spice_kernel`, `load_common_spice_kernels`, `unload_spice_kernel`, `get_body_state` | Manage SPICE kernels and query planet/Moon/Sun/barycenter states via SPICE. | | Small bodies | `list_smallbody_options`, `lookup_small_body`, `get_small_body_ephemeris` | Look up asteroids/comets via the JPL Small-Body Database (SBDB) and sample ephemerides generated on demand via JPL Horizons. Both make live JPL network calls. | | 3D plots | `plot_trajectory_3d`, `plot_synodic_3d` | Interactive 3D trajectory plots about Earth or in a synodic (rotating two-body) frame; each returns an inline PNG plus a saved interactive HTML file. | | RA/Dec coordinates | `list_radec_options`, `convert_radec`, `apply_proper_motion` | Right ascension/declination to inertial (ECI/GCRF) and topocentric (AZEL) frames, plus IAU SOFA proper-motion propagation. Proper motion is in mas/yr; `pm_ra` is the cos(d…
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