emerging · 0.5 market domain

Cross-Chain

Score 21.6 / 100 42 providers 16 APIs Search apis.io →
Variants seen in the corpus: Cross ChainCross-ChainCross-chain

Providers using this tag (42)

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

Strong 4 Solid coverage with minor gaps
CovalentBlockchainWeb3Multi-ChainData Infrastructure5 APIs63.8BiconomyAccount AbstractionBlockchainBundler2 APIs59.80xCryptocurrencyDeFiDEX AggregatorSwap2 APIs57.8LI.FICompanyCrypto Web3Blockchain2 APIs56.2
Developing 11 Usable, with meaningful gaps to close
HifiCompanyStablecoinsPaymentsMoney Movement1 API48.3AvalancheBlockchainWeb3AvalancheNFT1 API47.5OptimismLayer 2EthereumOP StackSuperchain1 API46.5CircleBlockchainComplianceCurrency1 API42.9EnsoCompanyCrypto Web3DeFiBlockchain1 API42.6M 0CompanyStablecoinCryptocurrencyBlockchain1 API42.5M0CompanyCryptoStablecoinsPayments1 API41.9ExponentialCompanyDeFiDecentralized FinanceYield2 APIs40.7EcoCompanyStablecoinCryptocurrencyPayments1 API40.5TristeroCompanyCryptocurrencyTradingDeFi2 APIs39.7ArbitrumLayer 2EthereumRollupJSON-RPC1 API39.5
Thin 16 Limited public surface area
MonadBlockchainLayer 1EVMHigh Performance1 API38.4AxelarBlockchainInteroperabilityWeb31 API35.4StarknetLayer 2EthereumValidity RollupZK1 API34.7THORChainCompanyCrypto Web3BlockchainDeFi3 APIs34.7Band ProtocolBlockchainOracleData FeedsPrice Feeds7 APIs34.6SuperformCompanyDefi YieldDeFiVault1 API33.3EverclearCompanyBlockchainCryptocurrencyWeb31 API33.0TenderlyWeb3BlockchainSmart ContractsEthereum6 APIs32.9WormholeBlockchainInteroperabilityDeFi1 API32.0LayerZeroBlockchainOmnichainInteroperability4 APIs31.01inchWeb3DeFiDEXAggregator1 API30.6RiftCompanyCrypto DefiDEX Aggregator1 API30.3BaseLayer 2EthereumOP StackSuperchain1 API30.1Push ProtocolWeb3BlockchainLayer 1Universal Apps5 APIs28.7HashflowCompanyDefiDEXRFQ2 APIs27.3Celer NetworkCompanyCryptoBlockchainInteroperability1 API26.9
Emerging 8 Early or largely undocumented
HyperledgerBlockchainDistributed LedgerEnterpriseLinux Foundation1 API25.9AcrossCompanyCrypto InfrastructureCross ChainBridge1 API24.0ChainflipCompanyCryptoBlockchainDeFi22.6AgoricCompanySmart ContractsBlockchainJavaScript20.0MoreMarketsCompanyDefiYield17.8IthacaCompanyCrypto InfrastructureEthereumAuthentication15.5AzuraCompanyDeFiCryptoBlockchain13.4Omni NetworkCompanyCryptoBlockchainInteroperability12.0
Minimal 3 Almost no public developer surface
Rangers ProtocolCompanyCryptoBlockchainWeb38.0ether.fiEthereumLiquid RestakingLiquid StakingRestaking5.2Brine (Tanx)CompanyCryptoDecentralized ExchangeDeFi1.6

APIs with this tag (16)

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 →

Strong 2 Solid coverage with minor gaps
Covalent Cross-Chain APIDiscover an address's activity across all supported chains.63.80x Cross-Chain APICross-Chain API endpoints57.8
Developing 4 Usable, with meaningful gaps to close
Optimism Bridge (Standard Bridge)Canonical cross-chain bridge for depositing and withdrawing ETH and ERC-20 tokens between Ethereum L1 and O...46.5Optimism SDK (Viem extension)Modern Optimism SDK exposed as a Viem extension (viem/op-stack) for L1L2 message tracking, deposit and with...46.5Arbitrum BridgeCanonical cross-chain bridge for transferring ETH and ERC-20 tokens between Ethereum L1, Arbitrum One, Arbi...39.5Arbitrum SDKOfficial TypeScript SDK (@arbitrum/sdk) for cross-chain interactions — building L1-to-L2 and L2-to-L1 messa...39.5
Thin 8 Limited public surface area
Monad BridgesToken bridges and cross-chain messaging integrations for moving assets between Ethereum, other chains, and ...38.4Axelar Token Transfer APIProvides insights into cross-chain token transfers executed through the Axelar network. Returns transfer st...35.4StarkGate BridgeCanonical L1L2 bridge for ETH and ERC-20 tokens between Ethereum and Starknet, operated by StarkWare. Bridg...34.7Tenderly Virtual TestNets REST APIProvision and manage production-mirroring virtual blockchain environments with state sync, unlimited faucet...32.9Wormhole TypeScript SDKUnified TypeScript SDK for building cross-chain applications on Wormhole. Supports Native Token Transfers, ...32.01inch Swap APIQuote and swap endpoints supporting classic aggregation, Fusion intent-based swaps, and cross-chain (Fusion+).30.6Base / Solana BridgeCross-chain bridge enabling asset transfers between Base and Solana, integrated into the Base ecosystem app...30.1Push Chain Core SDKJavaScript/TypeScript SDK (@pushchain/core) for the Push Chain Universal Layer 1 blockchain. Exposes PushCh...28.7
Emerging 2 Early or largely undocumented
Hyperledger Cacti APIHyperledger Cacti (formerly Cactus) is a pluggable enterprise-grade framework for cross-chain transactions,...25.9Across Swap APIThe unified REST entry point for all crosschain operations on Across — request swap/bridge quotes and appro...24.0

Score breakdown

Frequency
47.0
log-scaled weighted occurrences
Breadth
1.2
spread across providers
Quality lift
39.8
mean composite of providers using it
Cohesion
10.4
strength of nearest seed neighbor

Related tags

Bridge 10 co-occurrences Testnet 8 co-occurrences Mainnet 5 co-occurrences DeFi 28 co-occurrences Smart Contracts 11 co-occurrences Liquidity 5 co-occurrences EVM 6 co-occurrences JSON-RPC 7 co-occurrences

Where this tag comes from

Provider tag34
Api tag16
Openapi tag2
Openapi op tag4

Cohort brief

Auto-generated

The 42 providers in the APIs.io catalog tagged Cross-Chain, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
42
all scored
Mean Kin Score
33.1
+12.4 vs catalog 20.7
Mean Agent Readiness
17.6
+7.9 vs catalog 9.7
Spread
1.6–60.4
median 33.3 · σ 13.8
How the 42 split by band
Exemplar 0Strong 3Developing 11Thin 18Emerging 7Minimal 3
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 41.6 17.9 +23.7 42
Contract Quality 35.6 17.5 +18.1 42
Discoverability 72.5 60.4 +12.1 42
Operational Transparency 21.7 11.3 +10.4 42
Contract Governance 10.3 6.4 +3.9 42
Access Clarity 24.2 22.3 +1.9 42

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) 38% 16% +22
MCP server (first-party) 14% 7% +7
Agent Skills 0% 0% 0
OAuth scopes 0% 9% -9
Security 100% 88% +12
Arazzo workflows 2% 2% 0
Governance rules 26% 13% +13

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 Covalent 60.4
  2. 2 LI.FI 59.2
  3. 3 0x 58.3
  4. 4 Hifi 50.4
  5. 5 Biconomy 49.5
  6. 6 Avalanche 48.2
  7. 7 Enso 44.7
  8. 8 M 0 44.5
  9. 9 M0 43.9
  10. 10 Exponential 42.7
Top by Agent Readiness
  1. 1 LI.FI 40.1
  2. 2 M0 31.8
  3. 3 Exponential 31.5
  4. 4 Biconomy 31.2
  5. 5 Avalanche 30.6
  6. 6 Circle 29.6
  7. 7 Covalent 29.1
  8. 8 Hifi 28.6
  9. 9 Tristero 27.2
  10. 10 THORChain 26.4
All 42 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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MCP server

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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 →

Call it yourself

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This tag 
curl "https://apis.io/api/v1/tags/cross-chain"
All tags 
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As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/cross-chain"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/cross-chain/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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