aprs-mcp
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| APRS_HOST | No | APRS-IS server, default euro.aprs2.net | euro.aprs2.net |
| APRS_PORT | No | Default 14580 (140 for legacy tin) | 14580 |
| APRS_CALLSIGN | Yes | Your base callsign, e.g. ZL1ABC. Never transmit with NOCALL. | |
| APRS_NTP_HOST | No | NTP server for local timezone, default xxx.xxx.xxx.xxx | xxx.xxx.xxx.xxx |
| APRS_PASSCODE | Yes | APRS-IS passcode for the callsign. Use -1 for receive-only. | |
| APRSFI_API_KEY | No | Optional aprs.fi API key for fast aprs_position lookups |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
| logging | {} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| extensions | {
"io.modelcontextprotocol/ui": {}
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| aprs_cmd_listA | List the APRS tools exposed by this MCP server. |
| aprs_send_messageA | Send an APRS message to another callsign via APRS-IS. |
| aprs_positionA | Look up the last known position(s) of a callsign. If APRSFI_API_KEY is configured, the aprs.fi API is queried first for the station's last known location (fast, reliable). Otherwise the APRS-IS stream is listened to with a station filter until a matching packet is received or the timeout expires. |
| aprs_nearbyA | List APRS stations transmitting within a radius of a latitude/longitude. |
| aprs_listenA | Stream packets matching an APRS-IS filter string for a fixed duration. |
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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