{"mcpName":"station__observatory__viz-centrality","slug":"observatory__viz-centrality","label":"viz-centrality","description":"Supports degree, betweenness, closeness, eigenvector, or all four.","domainSlug":"observatory","pvRelevance":"non-pv","backend":"external","agentMetadata":{"idempotent":null,"read_only":null,"expected_latency_ms":null,"cost_tokens_estimate":null,"pipes_to":null},"inputSchema":{"properties":{"edges_json":{"description":"JSON array of edge pairs: `[[\"hub\",\"a\"], [\"hub\",\"b\"]]`","type":"string"},"metric":{"type":"string"},"nodes_json":{"description":"JSON array of node ID strings: `[\"hub\", \"a\", \"b\", \"c\"]`","type":"string"}},"required":["nodes_json","edges_json","metric"],"type":"object"},"example":null,"taxonomy":{"rank":{"domain":"Substrata","kingdom":"Constructa","phylum":"Configa","class":"station-config","order":"observatory","family":"mcp-tool-config"},"characteristics":{"substrate":"config","domain":"pv","lifecycle":"continuous","stateful":false,"persistence":"none","authority":"read","compounding":"producer","io_input":"agent-request","io_output":"tool-response"}},"_links":{"html":"/tools/observatory__viz-centrality","markdown":"/tools/observatory__viz-centrality/raw.md","invoke":"/api/mcp","catalog":"/api/mcp"}}