Polychain Capital
Polychain Capital is a San Francisco-based investment firm founded in 2016 by Olaf Carlson-Wee, the first employee and former Head of Risk at Coinbase. The firm is dedicated exclusively to blockchain and cryptocurrency, investing in protocols, digital tokens, and early-stage crypto companies through both a liquid token hedge fund and dedicated venture capital vehicles. Polychain's thesis centers on digital assets whose scarcity derives from mathematical and cryptographic properties, and its portfolio spans layer-1 and layer-2 networks, DeFi, developer and cryptographic infrastructure, custody, exchanges, zero-knowledge and privacy technology, AI-native crypto, and stablecoins. The firm has led notable rounds including Uniswap, dYdX, Yellow Card, Arbitrum (Offchain Labs), Scroll, and EigenLayer, and its venture funds are backed by LPs including Andreessen Horowitz, Sequoia Capital, Union Square Ventures, and Founders Fund. Reported assets under management have ranged from roughly $2.6B to about $5B across its funds; Polychain closed a $200M fourth venture fund in 2023 and employs a team of roughly 32 people from its San Francisco headquarters.
Polychain Capital has 82 portfolio companies tracked on the APIs.io network, of which 82 (100%) publish APIs indexed here.
Its highest-rated API providers on the network are Ava Labs, Nym Technologies, Cubist, Parity Technologies, Gauntlet.
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.
Developing 15 Usable, with meaningful gaps to close
Thin 22 Limited public surface area
Emerging 25 Early or largely undocumented
Minimal 19 Almost no public developer surface
Unrated 1 Not yet scored
Properties
Portfolio
Where the firm publishes its investments
Cohort brief
Auto-generatedThe 81 portfolio companies with APIs in the catalog, backed by Polychain Capital, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Developer Ergonomics | 35.9 | 17.9 | +18 | 81 |
| Discoverability | 65.9 | 60.4 | +5.5 | 81 |
| Contract Quality | 21.9 | 17.5 | +4.4 | 81 |
| Operational Transparency | 14.1 | 11.3 | +2.8 | 81 |
| Contract Governance | 8.1 | 6.4 | +1.7 | 81 |
| Access Clarity | 14.4 | 22.3 | -7.9 | 81 |
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) | 37% | 16% | +21 |
| MCP server (first-party) | 6% | 7% | -1 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 6% | 9% | -3 |
| Security | 93% | 88% | +5 |
| Arazzo workflows | 4% | 2% | +2 |
| Governance rules | 10% | 13% | -3 |
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 Ava Labs 54.2
- 2 Nym Technologies 51.2
- 3 Cubist 50.4
- 4 Kusama 48.9
- 5 Gauntlet 48.7
- 6 CoinList 48.6
- 7 Anchorage Digital 46.5
- 8 Coinbase 45.6
- 9 Aleo 44.6
- 10 M0 43.9
- 1 Anchorage Digital 47.5
- 2 Clover 35.9
- 3 Ava Labs 33.3
- 4 M0 31.8
- 5 Orca 31.7
- 6 CoinList 31.5
- 7 Gauntlet 30.6
- 8 Matrixport 30
- 9 Tendermint 29.8
- 10 Coinbase 29.1
Source (apis.yml)
Work with this as data
Every firm here is available over the APIs.io API and to AI agents over MCP.