Knowledge Graph
Variants seen in the corpus:
Knowledge Graphknowledge-graph
Providers using this tag (50)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Developing 19 Usable, with meaningful gaps to close
Thin 13 Limited public surface area
Emerging 12 Early or largely undocumented
Minimal 3 Almost no public developer surface
APIs with this tag (17)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Developing 5 Usable, with meaningful gaps to close
Bem Knowledge Graph APIRead the cross-document knowledge graph — the canonical entities and the directed relations between them th...Flume Context MCP ServerA remote Model Context Protocol endpoint served by the Flume Console at /api/v1/context/mcp. It is protecte...Google Knowledge Graph Search APIThe Knowledge Graph Search API lets you find entities in the Google Knowledge Graph, providing access to in...SAP HANA Graph Engine APIGraph processing engine for network analysis with built-in algorithms for path finding, pattern matching, a...Docling GraphTransform unstructured documents — once normalized to `DoclingDocument` — into validated, rich, queryable k...
Thin 5 Limited public surface area
Bing Entity Search APIThe Bing Entity Search API returns structured information about people, places, organizations, and other en...ConceptNet REST APIThe ConceptNet REST API exposes the full ConceptNet 5 knowledge graph via JSON-LD endpoints. Consumers can ...Events.com Knowledge Graph APIThe Knowledge Graph API from Events.com — 2 operation(s) for knowledge graph.Diffbot Knowledge Graph APIThe Knowledge Graph API from Diffbot — 2 operation(s) for knowledge graph.UniProt SPARQL EndpointA standards-compliant SPARQL 1.1 endpoint exposing the full UniProt knowledge graph as RDF. The current rel...
Emerging 7 Early or largely undocumented
DBpedia Linked DataHTTP Linked Data access to DBpedia resources via content negotiation. Dereference any DBpedia entity URI (h...DBpedia LiveReal-time SPARQL endpoint and Linked Data access over continuously updated DBpedia data derived from near-r...DBpedia Lookup ServiceREST API for entity retrieval and auto-complete over the DBpedia knowledge graph. Resolves plain-text keywo...DBpedia SPARQL EndpointPublic SPARQL 1.1 query endpoint backed by OpenLink Virtuoso over the DBpedia knowledge graph derived from ...DBpedia SpotlightREST API for automatic annotation and entity linking of natural language text to DBpedia resources. Accepts...Atlas REST APIThe direct HTTP API behind the Atlas CLI — the research graph, Library, runs, evidence, compute, and resear...Collibra Knowledge Graph GraphQL APIThe Knowledge Graph GraphQL API enables retrieval of Collibra assets, relations, communities, domains, and ...
Score breakdown
Frequency
49.4
log-scaled weighted occurrences
Breadth
1.4
spread across providers
Quality lift
40.2
mean composite of providers using it
Cohesion
4.2
strength of nearest seed neighbor
Related tags
Semantic Web 7 co-occurrences
SPARQL 6 co-occurrences
Memory 6 co-occurrences
Linked Data 5 co-occurrences
RAG 5 co-occurrences
Connectors 5 co-occurrences
Query 7 co-occurrences
LLM 6 co-occurrences
Where this tag comes from
Provider tag42
Api tag18
Openapi tag3
Openapi op tag6
Cohort brief
Auto-generatedThe 50 providers in the APIs.io catalog tagged Knowledge Graph, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
50
all scored
Mean Kin Score
33.2
+12.5 vs catalog 20.7
Mean Agent Readiness
20.2
+10.5 vs catalog 9.7
Spread
4.1–62.6
median 35.9 · σ 15.3
How the 50 split by band
Exemplar 0Strong 4Developing 17Thin 12Emerging 14Minimal 3
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 35.6 | 17.5 | +18.1 | 50 |
| Developer Ergonomics | 33 | 17.9 | +15.1 | 50 |
| Discoverability | 69.5 | 60.4 | +9.1 | 50 |
| Operational Transparency | 20.4 | 11.3 | +9.1 | 50 |
| Access Clarity | 31.2 | 22.3 | +8.9 | 50 |
| Contract Governance | 12.4 | 6.4 | +6 | 50 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 36% | 16% | +20 |
| MCP server (first-party) | 24% | 7% | +17 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 20% | 9% | +11 |
| Security | 96% | 88% | +8 |
| Arazzo workflows | 6% | 2% | +4 |
| Governance rules | 20% | 13% | +7 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
Top by Agent Readiness
- 1 Endgame 56.8
- 2 Signal AI 43.9
- 3 Tako 43.2
- 4 Bem 39.2
- 5 Google 39.2
- 6 Structify 37.9
- 7 Golden 36.5
- 8 Golden Recursion 36.5
- 9 Wikipedia / MediaWiki 33.5
- 10 Events.com 32.7
All 50 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
25 August 2026, across 26891
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.