RCSB PDB entity API

One RCSB PDB entity: label, description, key claims with resolved labels, and sitelinks.

Ask your agent

“Call rcsb_pdb/entity with id Q42 and summarize what comes back.”

Works in any MCP client connected to https://data.openkrill.app/mcp. Install in one line.

Path: rcsb_pdb/entity
MCP tool: call_endpoint
Credits: 1
Cache: 15 min

Parameters

idstring, required	Entity id from the platform, such as Q42

Response

data.resources[] uses the same keys as every other platform: author, engagement, metadata, with RCSB PDB-only fields under extras. A failed upstream call is never billed.

More RCSB PDB tools

Same entity call on other platforms

Wikidata

MCP tool call

{
  "name": "call_endpoint",
  "arguments": {
    "path": "rcsb_pdb/entity",
    "params": {
      "id": "Q42"
    }
  }
}

curl

curl "https://data.openkrill.app/v1/rcsb_pdb/entity?id=Q42" \
  -H "x-api-key: YOUR_API_KEY"

Response

{
  "success": true,
  "platform": "rcsb_pdb",
  "endpoint": "rcsb_pdb/entity",
  "data": {
    "resources": [
      { "id": …, "title": …, "text": …, "url": …,
        "author": {…}, "engagement": {…},
        "metadata": {…}, "extras": {…} }
    ]
  },
  "credits_used": 1,
  "cached": false
}