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io.github.sbrunner-atx/wsjtx-mcp

io.github.sbrunner-atx/wsjtx-mcpv0.1.2Other

Operate WSJT-X (FT8/FT4/WSPR) from MCP clients over its UDP message protocol.

In-path gate · all MCP tools

Using io.github.sbrunner-atx/wsjtx-mcp in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire
Trust verdict · v1 advisory · method
REVIEWstatus: PARTIALfresh until 2026-08-25 07:03 UTC
screened 2026-07-26tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidenceNo malicious instructions foundvia static_description

Limits of this verdict
  • - Semantic screen only - the deterministic conformance probe has not run on this server
  • - Confidence is reported but not yet calibrated (v1)
  • - Screen reads the tool description, not the live behavior
  • - advisory
  • - registry description only no input schema
  • - screen model 8b

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-11).

Contracts can change after screening, with no version bump. The gate pins io.github.sbrunner-atx/wsjtx-mcp’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Related: how to trust an MCP server · screen before install · silent contract drift

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[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-sbrunner-atx-wsjtx-mcp)](https://mcpindex.ai/server/io-github-sbrunner-atx-wsjtx-mcp)
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Environment variables
WSJTX_CALLSIGN

Operator callsign — the single transmit gate. Blank = receive-only (refuses all transmit-initiating messages).

WSJTX_HOST

Address to bind/receive WSJT-X UDP broadcasts on. For a remote WSJT-X use 127.0.0.1 with the mcp-host-bridge 'wsjtx' service and set the port to 2238.

WSJTX_PORT

WSJT-X Settings → Reporting → UDP Server port. Default 2237. Enable 'Accept UDP requests' for control.

WSJTX_MULTICAST

Optional multicast group to join so multiple UDP consumers can coexist. Blank = unicast.

WSJTX_INSTANCE

Optional WSJT-X instance Id to target when several broadcast here.

MCP quality score · maturity, not trust · methodology
freshness
24
completeness
10
installability
25
documentation
15
stability
5
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