astronomy-mcp-server
by cyanheads
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| LOGS_DIR | No | Directory for log files (Node.js only). | |
| OTEL_ENABLED | No | Enable OpenTelemetry instrumentation. | false |
| MCP_AUTH_MODE | No | Auth mode: `none`, `jwt`, or `oauth`. | none |
| MCP_HTTP_PORT | No | Port for the HTTP server. | 3010 |
| MCP_LOG_LEVEL | No | Log level (RFC 5424). | info |
| MCP_TRANSPORT_TYPE | No | Transport: `stdio` or `http`. | stdio |
| STORAGE_PROVIDER_TYPE | No | Storage backend. | in-memory |
| ASTRONOMY_ENABLE_HORIZONS | No | Register the `astronomy_get_ephemeris` tool (JPL Horizons). | false |
| ASTRONOMY_DEFAULT_TIMEZONE | No | Fallback IANA timezone when a tool call omits `timezone`. Unset = UTC-only output. | |
| ASTRONOMY_TLE_CACHE_TTL_MS | No | In-process TLE cache TTL (ms) — respects CelesTrak's refetch guidance (~once/2h). | 7200000 |
| ASTRONOMY_ENABLE_SATELLITES | No | Register the `astronomy_get_satellite_passes` tool (CelesTrak + SGP4). | false |
| ASTRONOMY_HORIZONS_BASE_URL | No | Override the JPL Horizons API endpoint. | https://ssd.jpl.nasa.gov/api/horizons.api |
| ASTRONOMY_CELESTRAK_BASE_URL | No | Override the CelesTrak GP/TLE endpoint. | https://celestrak.org/NORAD/elements/gp.php |
| ASTRONOMY_REQUEST_TIMEOUT_MS | No | HTTP timeout (ms) for Horizons and CelesTrak requests. | 15000 |
Capabilities
Server capabilities have not been inspected yet.
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
No tools | |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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