CRV
CRV (formerly Charles River Ventures) is one of the oldest venture capital firms in the United States, founded in 1970 to commercialize research coming out of MIT. The firm invests early — primarily at the Seed and Series A stages, with occasional Series B — leading rounds in enterprise, consumer, developer tools, security, data infrastructure, AI, and bioengineering companies. CRV has backed more than 750 companies since inception across 18 funds, raising over $4.3 billion (including a recent $600M early-stage fund), and has seen 80-plus of its portfolio companies reach public-company status. Notable investments include DoorDash, Airtable, HubSpot, Datadog, Zendesk, Patreon, Mercury, Vercel, Cursor, Postman, Kong, Tailscale, Ring, and PillPack. The firm is headquartered in San Francisco (52 Zoe Street) with a long-standing Bay Area presence and offices in Menlo Park, CA and Cambridge, MA.
CRV has 155 portfolio companies tracked on the APIs.io network, of which 87 (56%) publish APIs indexed here. The remaining 68 are tracked as profiles without a published API on the network.
Its highest-rated API providers on the network are HubSpot, Postman, DoorDash, Checkly, Talon.One.
Portfolio on the Network
Portfolio companies that publish APIs indexed on APIs.io, grouped by their API Evangelist rating. Exemplar and Strong are expanded by default.
Exemplar 10 Complete, well-documented, and agent-ready
Strong 16 Solid coverage with minor gaps
Developing 26 Usable, with meaningful gaps to close
Thin 25 Limited public surface area
Emerging 8 Early or largely undocumented
Minimal 2 Almost no public developer surface
Properties
Cohort brief
Auto-generatedThe 145 portfolio companies with APIs in the catalog, backed by CRV, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Access Clarity | 39.3 | 26.5 | +12.8 | 145 |
| Contract Quality | 27 | 17.7 | +9.3 | 145 |
| Developer Ergonomics | 31.3 | 23.8 | +7.5 | 145 |
| Operational Transparency | 20 | 13.2 | +6.8 | 145 |
| Discoverability | 61.9 | 58 | +3.9 | 145 |
| Contract Governance | 8.1 | 7 | +1.1 | 145 |
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) | 27% | 15% | +12 |
| MCP server (first-party) | 26% | 13% | +13 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 14% | 12% | +2 |
| Security | 100% | 98% | +2 |
| Arazzo workflows | 6% | 2% | +4 |
| Governance rules | 20% | 18% | +2 |
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 Checkly {"score" => 59.5, "band" => "agent-ready"}
- 2 Collate {"score" => 58.8, "band" => "agent-ready"}
- 3 Postman {"score" => 55.6, "band" => "agent-ready"}
- 4 Tavus {"score" => 53.3, "band" => "agent-ready"}
- 5 HubSpot {"score" => 52.7, "band" => "agent-ready"}
- 6 Airtable {"score" => 50.3, "band" => "agent-ready"}
- 7 Talon.One {"score" => 49.8, "band" => "agent-native"}
- 8 Lokalise {"score" => 48.9, "band" => "agent-ready"}
- 9 Factorial {"score" => 48.5, "band" => "agent-ready"}
- 10 Splunk {"score" => 48, "band" => "agent-ready"}
Coverage caveat. 121 of 145 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 2 November 2026, across 37080 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.
Source (apis.yml)
Work with this as data
Every firm here is available over the APIs.io API and to AI agents over MCP.