Y Combinator
Providers using this tag (249)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Developing 9 Usable, with meaningful gaps to close
Thin 13 Limited public surface area
Emerging 58 Early or largely undocumented
Minimal 155 Almost no public developer surface
Unrated 11 Not yet scored
APIs with this tag (1)
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 →
Emerging 1 Early or largely undocumented
Companies reaching this through an API (1)
These companies publish an API, specification or operation carrying “Y Combinator” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Score breakdown
Related tags
Where this tag comes from
Cohort brief
Auto-generatedThe 210 providers in the APIs.io catalog tagged Y Combinator, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Governance | 1.9 | 6.4 | -4.5 | 210 |
| Discoverability | 55.5 | 61.2 | -5.7 | 210 |
| Access Clarity | 17.7 | 26.5 | -8.8 | 210 |
| Operational Transparency | 4.2 | 14 | -9.8 | 210 |
| Developer Ergonomics | 12.3 | 23.4 | -11.1 | 210 |
| Contract Quality | 4.3 | 19.8 | -15.5 | 210 |
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.
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 11% | 10% | +1 |
| MCP server (first-party) | 19% | 13% | +6 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 6% | 11% | -5 |
| Security | 95% | 97% | -2 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 0% | 14% | -14 |
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.
- 1 Compresr 62.8
- 2 Insforge 57.9
- 3 VOYGR 54.8
- 4 The Hog 48.3
- 5 Codag 47.5
- 6 Qomplement 45.7
- 7 Amboras 44.9
- 8 Osmaura 44.3
- 9 CharacterQuilt 43.4
- 10 ShortKit 42.7
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.