ConceptNet

ConceptNet REST API

The ConceptNet REST API exposes the full ConceptNet 5 knowledge graph via JSON-LD endpoints. Consumers can look up concept nodes by language and term, query edges by relation type, retrieve semantically related terms ranked by Numberbatch embedding similarity, compute pairwise relatedness scores between concepts, and normalize natural-language text into canonical ConceptNet URIs. No authentication or API key is required. Rate limits of 3,600 requests/hour and 120 requests/minute apply. The /related and /relatedness endpoints each count as 2 requests against the quota.

GitHub

Documentation

📖
Documentation
https://github.com/commonsense/conceptnet5/wiki/API
📖
GettingStarted
https://github.com/commonsense/conceptnet5/wiki

Other Resources

🔗
Downloads
https://github.com/commonsense/conceptnet5/wiki/Downloads
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/conceptnet/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
name: ConceptNet REST API
description: The ConceptNet REST API exposes the full ConceptNet 5 knowledge graph via JSON-LD endpoints.
  Consumers can look up concept nodes by language and term, query edges by relation type, retrieve semantically
  related terms ranked by Numberbatch embedding similarity, compute pairwise relatedness scores between
  concepts, and normalize natural-language text into canonical ConceptNet URIs. No authentication or API
  key is required. Rate limits of 3,600 requests/hour and 120 requests/minute apply. The /related and
  /relatedness endpoints each count as 2 requests against the quota.
humanURL: https://github.com/commonsense/conceptnet5/wiki/API
baseURL: https://api.conceptnet.io
tags:
- Knowledge Graph
- NLP
- Semantic Relations
- Multilingual
- Common Sense
properties:
- type: Documentation
  url: https://github.com/commonsense/conceptnet5/wiki/API
- type: GettingStarted
  url: https://github.com/commonsense/conceptnet5/wiki
- type: Downloads
  url: https://github.com/commonsense/conceptnet5/wiki/Downloads