Layer 2
Providers using this tag (31)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Developing 7 Usable, with meaningful gaps to close
Thin 13 Limited public surface area
Emerging 9 Early or largely undocumented
Minimal 2 Almost no public developer surface
APIs with this tag (6)
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 1 Usable, with meaningful gaps to close
Thin 3 Limited public surface area
Emerging 2 Early or largely undocumented
Companies reaching this through an API (1)
These companies publish an API, specification or operation carrying “Layer 2” 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
Where this tag sits
Related tags
Where this tag comes from
Cohort brief
Auto-generatedThe 31 providers in the APIs.io catalog tagged Layer 2, 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 | 40.6 | 23.2 | +17.4 | 31 |
| Operational Transparency | 25.4 | 13.7 | +11.7 | 31 |
| Discoverability | 68.8 | 58.1 | +10.7 | 31 |
| Contract Quality | 24.5 | 17.6 | +6.9 | 31 |
| Contract Governance | 7.3 | 6.3 | +1 | 31 |
| Access Clarity | 21.7 | 26.5 | -4.8 | 31 |
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) | 6% | 14% | -8 |
| MCP server (first-party) | 6% | 12% | -6 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 0% | 11% | -11 |
| Security | 100% | 98% | +2 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 23% | 14% | +9 |
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 Optimism Etherscan 49.1
- 2 Linea 48
- 3 Arbiscan 47.1
- 4 Zircuit 43.3
- 5 Optimism 42.2
- 6 Consensys 40.6
- 7 zkSync 40.6
- 8 Starkware 37.7
- 9 Matter Labs 36.4
- 10 Arbitrum 35.2
- 1 Optimism Etherscan 28.7
- 2 Arbiscan 28.7
- 3 Ribbon Finance 24
- 4 Optimism 23.4
- 5 Arbitrum 23.4
- 6 Starknet 23.4
- 7 Linea 22.9
- 8 Blast 22.3
- 9 Scroll 22.3
- 10 Base 22.3
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.