sources

MCP tool from Signal MCP Spec by aiassistsecure

is optional — the server picks intelligently by default. This is progressive disclosure: easy path is one parameter (query), power path is five.

How to use it

sources is exposed by the Signal MCP Spec MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the sources tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.

FULL SIGNAL MCP SPEC LISTING

Other tools in Signal MCP Spec (3)

intent_filter

uses the same enum as the resource (signal://lexicon), so an agent that's read the lexicon knows exactly what to pass.

query

is a string, not a keyword array. The agent thinks in natural language; making it pre-extract keywords is asking it to do the server's job.

scope

groups spatial/temporal filters so the flat namespace stays readable.