{"mcpName":"station__rcsb-org__find-cocrystal","slug":"rcsb-org__find-cocrystal","label":"find-cocrystal","description":"Find PDB entries containing a given small-molecule ligand (by name or 3-letter chem component code). Use this to discover receptor/ligand cocrystals for mechanism-of-action visualization.","domainSlug":"rcsb-org","pvRelevance":"pv-adjacent","backend":"external","agentMetadata":{"idempotent":null,"read_only":null,"expected_latency_ms":null,"cost_tokens_estimate":null,"pipes_to":null},"inputSchema":{"type":"object","properties":{"ligand":{"type":"string","description":"Ligand name (e.g., 'caffeine') or 3-letter chem component ID (e.g., 'CFF')"},"limit":{"type":"integer","description":"Maximum entries to return (default 10, max 25)"}},"required":["ligand"]},"example":null,"taxonomy":{"rank":{"domain":"Substrata","kingdom":"Constructa","phylum":"Configa","class":"station-config","order":"rcsb_pdb","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/rcsb-org__find-cocrystal","markdown":"/tools/rcsb-org__find-cocrystal/raw.md","invoke":"/api/mcp","catalog":"/api/mcp"}}