emerging · 0.6

Layer 2

Score 20.9 / 100 33 providers 7 APIs Search apis.io →

Providers using this tag (33)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Developing 6 Usable, with meaningful gaps to close
Optimism EtherscanBlockchainOptimismEthereum7 APIs49.1ArbiscanBlockchainCryptocurrencyArbitrum8 APIs47.1LineaBlockchainEthereumzkEVM4 APIs47.0ZircuitCompanyCryptoBlockchain2 APIs45.1ConsensysCompanyInfrastructureBlockchainEthereum1 API43.7ArbitrumEthereumRollupJSON-RPC10 APIs41.6
Thin 13 Limited public surface area
StarkwareCompanyBlockchainEthereum4 APIs38.9OptimismEthereumOP StackSuperchain10 APIs37.7BlastBlockchainEthereumEVM9 APIs37.6Matter LabsCompanyBlockchainEthereum1 API35.5Ribbon FinanceDeFiFinanceOptionsStructured Products10 APIs34.1zkSyncEthereumzkEVMZK-Rollup10 APIs33.9StarknetEthereumValidity RollupZK13 APIs33.6MezoCompanyCrypto Web3BlockchainBitcoin2 APIs33.1ScrollzkEVMEthereumRollup9 APIs33.0Mantle NetworkEthereumRollupEigenDA8 APIs32.2UrbitCompanyCryptoPersonal ServersDecentralized Identity2 APIs31.9BaseEthereumOP StackSuperchain10 APIs31.6MorphCompanyCryptoBlockchain2 APIs27.6
Emerging 12 Early or largely undocumented
=nil; FoundationCompanyZk InfrastructureBlockchain1 API25.2LineaBlockchainEthereumzkEVM10 APIs24.5AztecCompanyBlockchainPrivacyZero Knowledge23.6AuroraCompanyBlockchainEVMWeb31 API23.5Offchain LabsCompanyBlockchainEthereum3 APIs22.2Manta NetworkCompanyBlockchainEthereum2 APIs21.8Offchain Labs (Arbitrum)CompanyCryptoBlockchainEthereum20.5EigenDABlockchainData AvailabilityEthereumRestaking5 APIs20.3InfinitySwapCompanyDeFiBlockchainEthereum1 API18.5OffchainCompanyCryptoBlockchainEthereum1 API18.4Ancient8CompanyCryptoBlockchainEthereum2 APIs17.0CartesiBlockchainOptimistic RollupsEthereum13.9
Minimal 2 Almost no public developer surface
BitDAOCompanyCryptoDAOGovernance8.0OMG NetworkCompanyCryptoBlockchainEthereum6.8

APIs with this tag (7)

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
Zircuit JSON-RPC APIStandard Ethereum JSON-RPC 2.0 interface to the Zircuit L2 network (HTTP and WebSocket) for reading chain s...45.1
Thin 2 Limited public surface area
ZKsync Era JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the ZKsync Era ZK rollup. Standard eth_* methods plus the ZKsync-s...35.5Azimuth Layer 2 Roller HTTP RPC-APIThe HTTP RPC-API of Azimuth's Layer 2 naive rollup roller, primarily intended for interacting with Bridge. ...31.9
Emerging 4 Early or largely undocumented
=nil; JSON-RPC APIEthereum-style JSON-RPC 2.0 API exposing the =nil; cluster — blocks, transactions (messages), accounts, con...25.2Manta Pacific (EVM JSON-RPC)EVM-compatible Ethereum JSON-RPC endpoint for the Manta Pacific Layer-2 rollup (chain ID 169, currency ETH)...21.8Arbitrum One JSON-RPCPublic Ethereum-compatible JSON-RPC endpoint for Arbitrum One (chain id 42161 / 0xa4b1), the flagship Arbit...18.4Ancient8 Mainnet JSON-RPCPublic Ethereum JSON-RPC interface for the Ancient8 Mainnet (chain ID 888888888, currency ETH), available o...17.0

Score breakdown

Frequency
43.9
log-scaled weighted occurrences
Breadth
0.9
spread across providers
Quality lift
35.8
mean composite of providers using it
Cohesion
17.4
strength of nearest seed neighbor

Related tags

Sepolia 9 co-occurrences Rollup 9 co-occurrences Mainnet 9 co-occurrences Testnet 10 co-occurrences JSON-RPC 24 co-occurrences Bridge 9 co-occurrences Ethereum 31 co-occurrences zkEVM 5 co-occurrences

Where this tag comes from

Provider tag32
Api tag7

Cohort brief

Auto-generated

The 33 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.

Providers
33
all scored
Mean Kin Score
29.7
+9.0 vs catalog 20.7
Mean Agent Readiness
11.6
+1.9 vs catalog 9.7
Spread
6.8–49.1
median 31.9 · σ 11
How the 33 split by band
Exemplar 0Strong 0Developing 6Thin 13Emerging 12Minimal 2
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 41.1 17.9 +23.2 33
Discoverability 73.1 60.4 +12.7 33
Operational Transparency 21.6 11.3 +10.3 33
Contract Quality 24.6 17.5 +7.1 33
Access Clarity 22.5 22.3 +0.2 33
Contract Governance 5.5 6.4 -0.9 33

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
ArtifactThis cohortCatalogDifference
MCP server (any) 18% 16% +2
MCP server (first-party) 9% 7% +2
Agent Skills 0% 0% 0
OAuth scopes 0% 9% -9
Security 100% 88% +12
Arazzo workflows 0% 2% -2
Governance rules 18% 13% +5

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
  1. 1 Optimism Etherscan 49.1
  2. 2 Arbiscan 47.1
  3. 3 Linea 47
  4. 4 Zircuit 45.1
  5. 5 Consensys 43.7
  6. 6 Arbitrum 41.6
  7. 7 Starkware 38.9
  8. 8 Optimism 37.7
  9. 9 Blast 37.6
  10. 10 Matter Labs 35.5
Top by Agent Readiness
  1. 1 Arbiscan 28.7
  2. 2 Optimism Etherscan 28.7
  3. 3 Starkware 23.8
  4. 4 Arbitrum 23.4
  5. 5 Optimism 23.4
  6. 6 Starknet 23.4
  7. 7 Base 22.3
  8. 8 Blast 22.3
  9. 9 Ribbon Finance 22.3
  10. 10 Scroll 22.3
All 33 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

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Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

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