Open Library subject works API

Works on one Open Library subject, sortable by recency, rating or edition count.

Ask your agent

“Call openlibrary/subject/works with subject science_fiction and summarize what comes back.”

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

Path: openlibrary/subject/works
MCP tool: call_endpoint
Credits: 1
Cache: 2 min

Parameters

subjectstring, required	Subject slug, such as science_fiction
sortstring, optional	new, old, rating, editions or random, default new
limitinteger, optional	1-100 works, default 20
offsetinteger, optional	Page offset, default 0

Response

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

More Open Library tools

MCP tool call

{
  "name": "call_endpoint",
  "arguments": {
    "path": "openlibrary/subject/works",
    "params": {
      "subject": "science_fiction"
    }
  }
}

curl

curl "https://data.openkrill.app/v1/openlibrary/subject/works?subject=science_fiction" \
  -H "x-api-key: YOUR_API_KEY"

Response

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