Pulls live WSPR beacon data from wspr.live's 2.7 billion spot archive (2008-present) with no auth required. You get eight tools: recent spots with SNR and distance filters, per-band activity summaries, top beacon and receiver leaderboards, propagation path lookups between grid squares, longest path queries, and hourly SNR trends for specific links. Rate limited to 20 requests per minute with response caching and a circuit breaker to protect the upstream volunteer service. Useful if you're analyzing HF propagation conditions, tracking band openings, or correlating solar activity with signal reports. Part of the qso-graph project.
claude mcp add --transport stdio qso-graph-wspr-mcp -- uvx wspr-mcp