io.github.qso-graph/wspr-mcp

Get top WSPR receivers ranked by spot count or max distance. Shows the most prolific or most sensitive WSPR receiving stations. Useful for finding good receivers to monitor for propagation. Args: band: Filter by band (e.g., 20m). Empty for all bands. hours: Time window in hours (1-72, default 24). sort_by: Ranking criteria — "spots" (most received) or "distance" (farthest heard). limit: Number of results (1-50, default 20). Returns: Ranked list of receivers with spot counts, unique heard, max distance, bands.

Get wspr-mcp service version and upstream spec version. Returns the running PyPI version of wspr-mcp and the wspr.live ClickHouse schema revision in use. Use this to confirm fleet alignment across MCP deployments — agents can compare service_version and spec_version across servers to detect drift without going outside the MCP protocol. Returns: service_name, service_version (PyPI), and spec_version (wspr.live schema).

Get recent WSPR spots. WSPR beacons transmit every 2 minutes on precise frequencies. Each spot is a 2-minute integration proving a propagation path exists. Args: callsign: Filter by TX or RX callsign (e.g., KI7MT, K9AN). Empty for all. band: Filter by band (e.g., 20m, 40m, 10m). Empty for all bands. hours: Time window in hours (1-72, default 24). limit: Maximum spots to return (1-200, default 50). grid: Filter by grid square prefix (e.g., DN13, FN31). Matches TX or RX. min_snr: Minimum SNR in dB (e.g., -20). Filter out weak signals. max_snr: Maximum SNR in dB (e.g., -5). Filter out strong signals. min_distance: Minimum path distance in km (e.g., 5000 for DX only). Returns: List of spots with TX/RX callsigns, grids, band, SNR, distance, power.

Get per-band WSPR activity summary. Shows spot counts, TX/RX station counts, average and max distance, and average SNR for each band. The best indicator of which bands are open right now. Args: hours: Time window in hours (1-6, default 1). Returns: Per-band activity with spot counts, station counts, distances, and SNR.

Get top WSPR transmitters ranked by spot count or max distance. Shows the most active or most far-reaching WSPR beacon operators. Useful for finding who's putting out a big signal on a band. Args: band: Filter by band (e.g., 20m). Empty for all bands. hours: Time window in hours (1-72, default 24). sort_by: Ranking criteria — "spots" (most heard) or "distance" (farthest reach). limit: Number of results (1-50, default 20). Returns: Ranked list of transmitters with spot counts, reporters, max distance, bands.

Get WSPR-derived propagation between two locations. Shows which bands have been open between two endpoints, with spot counts, SNR statistics, and hours of opening. Accepts callsigns or grid squares (or a mix). Searches both directions automatically. Args: tx: First endpoint — callsign (e.g., KI7MT) or grid (e.g., DN13). rx: Second endpoint — callsign (e.g., G8JNJ) or grid (e.g., IO91). band: Filter to a specific band (e.g., 20m). Empty for all bands. hours: Time window in hours (1-72, default 24). Returns: Per-band propagation with spot counts, SNR stats, and UTC hours open.

Get all WSPR activity in or out of a Maidenhead grid square. Shows summary stats and recent spots for a geographic area. Use 2-character grid (e.g., DN) for a wide area or 4-character (e.g., DN13) for a specific region. Args: grid: Maidenhead grid square — 2 char (DN) or 4 char (DN13). band: Filter by band (e.g., 20m). Empty for all bands. hours: Time window in hours (1-72, default 24). limit: Maximum recent spots to return (1-200, default 50). Returns: Summary stats (totals, stations, bands) plus recent spot list.

Get the longest WSPR paths in the given time window. WSPR's precise timing and low power make it the gold standard for detecting marginal propagation. Long paths here prove the band is open. Args: band: Filter by band (e.g., 20m, 10m). Empty for all bands. hours: Time window in hours (1-72, default 24). limit: Maximum paths to return (1-50, default 20). min_distance: Minimum distance in km (e.g., 15000 for near-antipodal). Returns: Paths ranked by distance, with callsigns, grids, band, SNR, power.

Get SNR trend over time for a specific WSPR path. Shows hourly SNR buckets for a path between two endpoints. Useful for seeing when a band opens and closes on a specific path, and how signal strength varies over time. Args: tx: First endpoint — callsign (e.g., K9AN) or grid (e.g., EN50). rx: Second endpoint — callsign (e.g., G8JNJ) or grid (e.g., IO91). band: Filter to a specific band (e.g., 20m). Empty for all bands. hours: Time window in hours (1-72, default 24). Returns: Hourly SNR data points with spot counts, avg/best/worst SNR per hour.