Blockchain
Providers using this tag (729)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 2 Complete, well-documented, and agent-ready
Strong 34 Solid coverage with minor gaps
Solanaimgauth — API di attestazione opere digitaliSolidus LabsCrypto.comImmutableCelestiaMolTrustBraiinsCymeticaFarmDash Agent HubCovalentZerionOpenZeppelinChainstackLedgerx402 List APIMaiCoinRipioAptosUltravioleta DAObroke2builtMadeOnSolBiconomyMyStars FaaSBraleEVEDEXRipple LabsBlock LottosPocket NetworkAmazon Managed BlockchainB3CipherOwlCopper.coScale3
Developing 146 Usable, with meaningful gaps to close
AmbrLI.FILukkaAeternityFordefiConduitAlliumIOTAVaultfire ProtocolUtilaMoonPayMeshChainAware.aiNym TechnologiesBitculatorAva LabsLighterAmberdataTetherLunoOndo FinanceMoirai LabsBlockchain.comCryptoCompareOctavDefinedFigmentOptimism EtherscanArkhamRamp NetworkTensor0G LabsMetaLendCoin RailzFiptoHergert SynthoraKusamaOstium LabsAgent Health MonitorKyber NetworkHallidayLineaTRM LabsAgent ExchangeDigital AssetStellarAkash NetworkAlgorandSIMBA ChaintZEROGauntletAmazon QLDBPaxosArbiscanCoinGeckoKuruAcinqPythBlockfrostanchor-x402SupraTriton OneHorizon Blockchain GamesUnlock ProtocolDialectOpenSeaTesserN3XTOumlaPimlicoRaribleBlockdaemonWalrus ProtocolGunzilla GamesFlexaSentioMagic EdenAgent ZeroCoinbase GlobalDinariOrderly NetworkRecall LabsPrivateDAOBitbondAelfAvalancheAva ProtocolRequest FinanceUniswapBlackbirdCubistZircuitCoinbaseFortaBulletPocket NetworkCoinListMysten LabsBasescanParafiSahara AISecuritizeBitskiEnsoFigure Technology SolutionsPaulieB14PredCoin MetricsBitFuryMEXCNameWhisperBscScanHyperbeatLemon CashM0TransposeArweaveLoon FinanceTronZapAleoGala GamesSyndicateAgoraAutonomysD3InjectiveSeismic SystemsThunderCoreTOP Group (The Open Platform)ConsensysHederaLBankWarpPay402 StudioCircleSafe (Gnosis Safe)ShapeshiftETHGasKaminoSorareChia NetworkSequenceAPI3InfStonesUnstoppable DomainsUplandExponential
Thin 195 Limited public surface area
Routescan (Snowtrace)SapienSquadsPolygonScanMobulaCardanoQuadrataTendermintBinanceGONNARebloXrouteGalxeOKXEuler FinanceFilebaseNeynarHibachiEcoDFlowNervosStarkwareYield.xyzRockSolidPancakeSwapRho ProtocolSurfA2A402BoostBabylon LabsBitPayOrcaConsola FinanceVanaKorbitTweedEtherscanTezosBRLAVORA Agent ForgeMatter LabsSyndicaBanQuBloqCertiKCosmosEllipticHummingbotVia ScienceSuperRareBlockaidDapper LabsBlocktorchDMarketEspressoUniblockTeahouse FinanceQuickNodeDeBankPolygon IDSpacemeshFlashbotsIDRXEnvioLoot Rush GamesPolkadotAlienClassicImmunefiMeterMobilecoinInspur CloudBreezeDune AnalyticsMonadProof of PlayEthena LabsGluwaMezoBlowfishBlastthirdwebBitGoFlipside CryptoKiteMinaPayStandSuccinctBlockchairCodeFootprint AnalyticsGallopSky MavisFreeverseAztecprotocolFutureverseSynFuturesHere Not There LabsTaurusDerivaDEXChainLimit BreakBigchaindbOdosHeliusManifoldArtem / A2A SandboxBand ProtocolCryptoQuantDSCVREverledgerHTXTimeswapShipyard SoftwareTenderlyTHORChainAztec NetworkMoneroZoraFilecoinXRP LedgerUnto LabsSingularityNETSuperformLayerZeroParaSwapCertoraSuiHydromancerArt BlocksHypernativeWaveBLDunamuTogether LabsCeloGTEEOSIOAxelarCyberConnectAlchemyComethOverlayReservoirSynthetixHarmonic GGBitPowr TechnologiesBlue Square Group LimitedInfuraNFTgoOrigin ProtocolMoralisBurstIQFlowPerpSushiSwapTatumEthereumWorld (Worldcoin)WormholeAngleFoundationProvenancePush ProtocolMorphZcashThe SandboxSeiAirstackAudiusLitecoinAxie InfinitySommelierStory ProtocolDemox LabsVioletOasis LabsOpentradeChainlensopenclaw / evm-labBitMartCeler NetworkIron FishSkale LabsYearn FinanceErnst & Young (EY)HiroSelf.IDWAXBerachainBitClout (DeSo)HashflowMythical GamesOneKey=nil; Foundationo1 Labs
Emerging 172 Early or largely undocumented
AuroraSantimentX2Y2BloqitNanoCoralIYKBarnBridgeCoinAPIMina ProtocolValoraKyberSwapPolySignQuai NetworkCommonwealthSimpleHashNEAR ProtocolRedStoneMaverick ProtocolBreederDAOCeramicTariFilamentPhantomBitstackSojo IndustriesAcrossAlloyX5ireAlpen LabsDoodlesZebecCoinPaprikaHashKey Cloud (HashQuark)RLY NetworkWarblerlabsZefchainChainflipBitCloutMoleculeOffchain LabsAztecHyperledgerGensynWinCLBittensorSorella LabsHalbornDFINITYSuperfluidManta NetworkNotional FinanceDashOffchain Labs (Arbitrum)BlockstreamRamperAnoma NetworkChronicledParsec FinanceAmber GroupINFINITAgoricClustersSenderCozy FinanceCommunity LabsAndalusia LabsUnisubAcalaChaoslabsHamsaAnomaReady (formerly Argent)Mountain ProtocolRocket PoolBlockVisionVerse (autonomous agent)DODOEigenDAMultipliEllipsis LabsInfinitySwapKarakQuant NetworkObligateRoycoDabbaFastLanePuffer FinanceCo:CreateLithium FinanceSunscreenFarawaymarginfiAlchemixCartesiMainframeCourtyardAncient8Arch NetworkDoubleZeroMy AINova LabsCode4renaForte LabsInstadappMyCryptoTerm FinanceEZKLMirrorEntropyBitTorrentCompound FinanceZamaTrust TokenAprilHubble ProtocolBaxusFigure MarketsTranchedTalus NetworkArgentBeefy FinanceBlockskyeStaircaseCryptioStructureChainlinkThe BlockAurigraphdltcorporationMoolaBancorprotocolPontemPrimodiumUpstreamLoreParallel UniverseRialoAuthenticvisionAzuraEnosys MarketsGEODNETInvestaXExa FinanceSilo FinanceBoardroom GovernanceCoin98Orchid LabsBitmainUXD ProtocolFhenixLootexCypheriumGenopetsVoatzPartyDAOStader LabsSumerMoai.cashAPEXBrevisAutographfomoGeodeEden NetworkBlocPalHalogen CapitalPROOFAmpOmni NetworkxRocket Exchange APIWeb3 Foundation
Minimal 177 Almost no public developer surface
Aerial PartnersBancorSkipEvertasRACE ProtocolLF Decentralized TrustBloctoBlurDLT PaymentsBitcoinopenIDLBitAccessFour PillarsHuma TechnologiesPrypcoID PlanetMakerDAOAnimoca BrandsSovrynAnchor ProtocolBetdexDigital Currency GroupFinoaSaberSound.xyzKeep NetworkPerennial LabsHourglassAltius LabsMathWalletOneConnectStablecoreRally NetworkBraavosDCGElementusEveryrealmExotic MarketsOMG NetworkYuga LabsAerodromeBrickschainCogniLayer3NooxSentientCegaCoinTrackerPowerledgerAmpleforthAuradine (Velaura AI)Sturdy01 ExchangeMangata FinancedForceStrideTeller FinanceYield Guild GamesAxiom CloudTheta EdgeCloudFnality InternationalParallel FinanceGuildFiYoloRektBitDAORangers ProtocolCommunity GamingAlluvaAlpha FinanceDemocracy EarthGenesis Digital AssetsIrreducibleQuantstampTransCryptsHedgeNownodesSec3SpotPayMesoMidasSteemWatchdatacontentboxNeuroware.ioUmoja LabsCYBAVOSummoners ArenaAID:TechDarewiseWivityCryptoysWalltimeBSOSDappRadarUmbalaZenGoEtherealizePotion LabsFabric CryptographyReverieTradewind MarketsMakersPlaceOpenBazaarTally LabsBison TrailsBlockTower CapitalCoinbooksCoinmineCymbalEV3Fast Break LabsFBG CapitalFriend.techFunFairGMRHeights LabsHyperspaceN3tworkPine Street LabsPlaceholderPleasrDAORealySalad VenturesSHRAPNELStakedVeriTXZed.run&VolumeCore LoopReality ReflectionChainpointArchwayBitscoinsconsultingTribesBrine (Tanx)SpringRoleCambridge BlockchainEjaraAsulaTurboFlowAi-BlockchainCoinsuperGaspackHeroic StoryMerkleMetaStable CapitalNOD GamesPerionBalance Web3JamboBattleboundBlockFiBlockVigilBloomCapsule SocialClutch WalletCodex ProtocolComputableDharma LabsEverclearFei ProtocolFluidityGeneral Galactic CorporationKadenaKik (Kin)LevelLinen AppMem ProtocolOB1OpenTokenPropsPsyOptionsRollSlingshotToplTransparent SystemsTrueFlip
Unrated 3 Not yet scored
APIs with this tag (161)
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 →
Exemplar 1 Complete, well-documented, and agent-ready
Strong 15 Solid coverage with minor gaps
Solana RPC Blocks APIBlock and slot-oriented JSON-RPC methods for the Solana blockchain. Includes getBlock to retrieve a confirm...Solana RPC Cluster APICluster and validator-oriented JSON-RPC methods for the Solana network. Includes getClusterNodes for the li...Solana RPC Economics APIEconomics and staking-oriented JSON-RPC methods for the Solana blockchain. Includes getInflationGovernor to...Solana RPC Tokens APISPL Token-oriented JSON-RPC methods for the Solana blockchain. Provides getTokenAccountBalance to return th...Solana RPC Transactions APITransaction-oriented JSON-RPC methods for the Solana blockchain. Includes sendTransaction to submit a signe...Solana RPC WebSocket Subscriptions APIReal-time WebSocket subscription API for the Solana blockchain. Provides event-driven notifications for acc...imgauth Remote MCP ServerHosted, zero-install MCP server (Streamable HTTP, protocol 2025-06-18) exposing the attestation service to ...Crypto.com Developer Platform APIOn-chain developer platform service API for Cronos EVM and Cronos zkEVM, exposing native and ERC-20 token b...GoldRush Hyperliquid WebSocket APIWebSocket channels for Hyperliquid markets including l2Book (wire-equal to the public feed), l2BookDiff (Go...OpenZeppelin Monitor APIOpenZeppelin Monitor is an open-source blockchain monitoring service that watches for specific on-chain act...Ledger Device Management KitTypeScript SDK for discovering, connecting to and driving Ledger hardware signers over WebHID, Bluetooth, U...Ledger Wallet APIBi-directional JSON-RPC 2.0 interface between a Live App (dApp) and a wallet implementing the Wallet API Se...EVEDEX Async API (Centrifugo)Real-time exchange events over WebSocket, brokered by Centrifugo with JWT channel access rights and epoch-b...EVEDEX Documentation & Agent SurfaceThe GitBook developer portal and agent-native documentation surface. Every page is retrievable as markdown ...Copper.co Blockchain APIThe blockchain API from Copper.co — 1 operation(s) for blockchain.
Developing 54 Usable, with meaningful gaps to close
Aeternity MCP ServerA remote Model Context Protocol endpoint published on aeternity.com and advertised through RFC 9728 protect...IOTA GraphQL APIGraphQL RPC interface for the IOTA blockchain, providing an alternative to the JSON-RPC API. Supports query...Blockchain Data APIFree JSON API over the Blockchain.com Explorer data set — single blocks, transactions, addresses, unspent o...Blockchain.com Charts and Statistics APIJSON/CSV feed behind the Blockchain.com charts and stats pages — per-chart time series, network statistics,...Blockchain.com Explorer WebSocket APILow-latency streaming socket channel providing notifications on new bitcoin blocks, unconfirmed transaction...Blockchain.com NFT Market APIPublic backend service for NFT market data, returning NFT assets owned by an address and individual asset l...Blockchain.com Simple Query APIPlain-text query API returning single values for blockchain statistics such as block count, difficulty, has...CryptoCompare Blockchain APIOn-chain blockchain data including history and balance distribution.Codex GraphQL APICodex is Defined's unified GraphQL API for real-time blockchain data: token prices, OHLCV bars, trades, liq...Tensor WebSocket APISubscription-based realtime stream of Tensor marketplace events. Channels include `newTransaction` (every c...0G Chain JSON-RPCEthereum-compatible JSON-RPC endpoint for the 0G Chain mainnet ("Aristotle", chain ID 16661), an AI-focused...0G DA (Data Availability) gRPCgRPC surface for the 0G data-availability layer. The Disperser service accepts blobs asynchronously (Disper...0G Storage IndexerIndexer service for the 0G Storage network. It locates the storage nodes holding a file's segments, brokers...Kusama JSON-RPC APIThe public Substrate JSON-RPC 2.0 interface to the Kusama relay chain. Probed live on 2026-07-19: 130 metho...Linea JSON-RPC APIStandard Ethereum JSON-RPC API plus Linea-specific extensions available at the public endpoint rpc.linea.bu...Stellar RPC APIThe Stellar RPC API (formerly Soroban RPC) is a JSON-RPC interface for interacting with Soroban smart contr...Akash Blockchain REST APIDirect REST access to Akash blockchain state via gRPC-Gateway on port 1317. Exposes Cosmos SDK modules (aut...SIMBA Blocks Platform Service (Dynamic Contract API)The SIMBA Build dynamic API generator. When a smart contract is deployed into an application, Blocks auto-g...Unlock Subgraphs (GraphQL)GraphQL subgraphs deployed on The Graph for each Unlock Protocol network, indexing locks, keys, and protoco...Blockdaemon Builder Vault TSMThreshold Signature Scheme (TSM) MPC wallet platform for builders. Customizable, deployable on-premises or ...Blockdaemon Chain Watch Events APIReal-time push-based on-chain event streaming for institutional wallets and finance systems. Configure Targ...Blockdaemon Data APIUnified, multi-chain REST data API (formerly Ubiquity) providing fully indexed blockchain data across 50+ n...Blockdaemon DeFi APISingle REST interface (formerly Expand Network) into multiple DeFi protocols — DEX swaps and aggregation ac...Blockdaemon Institutional VaultSelf-hosted MPC wallet for institutional hot, warm, and cold storage with granular governance, transaction ...Blockdaemon Management APIProgrammatic access to current period Compute Unit usage, request usage, and organization audit logs. Power...Blockdaemon RPC APIProduction-ready shared and dedicated JSON-RPC and REST node endpoints across 50+ protocols including Bitco...Blockdaemon Staking APIInstitutional staking-as-a-service API for creating validators and signed staking, unstaking, delegation, c...Blockdaemon Staking Reporting APIStandardized staking-reward and yield-reporting API delivering historical and current stake, validator stat...Blockdaemon Token Pricing APIToken metadata, tag, and pricing API — name, symbol, decimals, logo URI, and category tags (e.g., stablecoi...Blockdaemon Wallet Transact APIA wallet-application toolbox for scaling wallet operations on top of indexed multi-chain infrastructure. Co...GUNZ Chain JSON-RPC APIThe public Ethereum-compatible JSON-RPC endpoint for the GUNZ L1 chain, an Avalanche subnet running Subnet-...GUNZScan Explorer APIGUNZScan is the GUNZ chain block explorer, referenced from Gunzilla's own chain documentation as the offici...Aelf Block Chain APIThe BlockChain API from Aelf — 5 operation(s) for blockchain.Avalanche Metrics APIAccess chain throughput metrics, gas consumption, TPS, gas prices, cumulative address growth, contract depl...Avalanche Webhooks APIManage webhooks and get notified for various onchain activities.Uniswap Subgraph APIThe Uniswap Subgraph API provides GraphQL endpoints for querying on-chain data across Uniswap protocol vers...UniswapX APIUniswapX is a gasless, auction-based ERC20 swap settlement protocol that routes orders through a competitiv...Zircuit JSON-RPC APIStandard Ethereum JSON-RPC 2.0 interface to the Zircuit L2 network (HTTP and WebSocket) for reading chain s...Coinbase AgentKitCoinbase AgentKit is a toolkit that enables AI agents to interact with blockchain networks through secure w...Coinbase Data APIThe Coinbase Data API provides developers with access to cryptocurrency market data, blockchain analytics, ...Pocket Network Shannon Chain APICosmos SDK-based REST and gRPC API for interacting with the Pocket Network Shannon protocol chain. Provides...Sui GraphQL RPC APIThe Sui GraphQL RPC API — a GraphQL interface over Sui network data (objects, transactions, events, checkpo...Sui gRPC APIThe Sui full-node gRPC API (Protobuf, sui.rpc.v2) exposing LedgerService, StateService, TransactionExecutio...Sui JSON-RPC APIThe Sui full-node JSON-RPC API (OpenRPC 1.2.6) for reading objects, coins, balances, events, checkpoints, d...Exonum Node HTTP APIThe HTTP surface an Exonum node serves. The explorer service exposes REST endpoints under /api/explorer (bl...TronZap REST APIREST API for TRON Energy and Bandwidth rental, energy subscriptions, and AML crypto checks. Endpoints inclu...TronZap Wallet Orders APIFully public, unauthenticated Orders API for non-custodial wallet integrations. Four operations — POST /v1/...ThunderCore Explorer API (BlockScout)Etherscan-compatible REST API (?module=&action=) and ETH RPC API exposed by the BlockScout block explorer f...ThunderCore Mainnet JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the ThunderCore mainnet (chain ID 108, TT gas token). Supports the...ThunderCore Subgraph GraphQL APIGraphQL query surface over official ThunderCore subgraphs (TTSwap DEX and TT Mining) served from ThunderCor...ThunderCore Testnet JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the ThunderCore testnet (chain ID 18, TST gas token), with a fauce...TOP Group (The Open Platform) Blockchain APIThe Blockchain API from TOP Group (The Open Platform) — 22 operation(s) for blockchain.Infura Web3 APIInfura's managed Web3 API surface — JSON-RPC 2.0 access to Ethereum and 40+ EVM networks (Base, Arbitrum, O...Sorare GraphQL APISingle GraphQL endpoint exposing Sorare cards, users, auctions, offers and real-time subscriptions across f...
Thin 59 Limited public surface area
Blockfrost IPFS APIBlockfrost also operates as an IPFS provider, enabling developers building on Cardano to pin and retrieve c...CKB JSON-RPC APIPublic JSON-RPC 2.0 interface to Nervos CKB nodes for querying chain state (blocks, transactions, cells), s...Vana L1 JSON-RPCStandard Ethereum JSON-RPC for the EVM-compatible Vana L1 blockchain, which records registrations, grants, ...Syndica ChainStream APIChainStream is Syndica's real-time Solana data streaming API. It consolidates updates from multiple validat...Syndica Solana RPC (HTTP) APIHigh-performance Solana JSON-RPC HTTP endpoints served from a fault-tolerant elastic-node architecture acro...Syndica Solana RPC (WebSocket) APIStandard Solana RPC PubSub WebSocket service supporting accountSubscribe, programSubscribe, signatureSubscr...ZKsync Era JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the ZKsync Era ZK rollup. Standard eth_* methods plus the ZKsync-s...Espresso Network Query Service APIThe public REST and WebSocket API served by Espresso query services and nodes (Tide Disco framework). Compr...Uniblock JSON-RPC APIThe Uniblock JSON-RPC API provides a single endpoint for standard JSON-RPC calls across hundreds of blockch...XMTP App Chain RPC APIJSON-RPC API for the XMTP Layer-3 appchain built on Arbitrum and settling to Base. Used for smart contract ...HyperIndex GraphQL APIAuto-generated GraphQL API exposing indexed smart contract events from any EVM-compatible chain. HyperIndex...HyperRPC JSON-RPC APIRead-only JSON-RPC endpoint optimised for data-intensive operations, providing up to 5x performance improve...HyperSync REST APIHigh-performance data retrieval layer offering up to 2,000x faster blockchain data access than standard JSO...Inspur Cloud Blockchain Service (IBaaS) APIREST API for Inspur Cloud blockchain-as-a-service instance management — name checking, instance listing, in...Inspur Cloud Consortium Chain Service (ACS) APIREST API for Inspur Cloud's consortium blockchain service — instance management and renewal orders. 6 docum...Gluwa APIREST API for the Gluwa borderless financial platform — balances, fees, transactions, payment QR codes, wrap...Mezo Block Explorer APIBlockscout REST + JSON-RPC API for the Mezo chain explorer — blocks, transactions, addresses, tokens, and v...Mezo Chain EVM JSON-RPCEVM-compatible Ethereum JSON-RPC interface to the Mezo chain (eth_* methods) for reading chain state and su...Kite Chain JSON-RPC (Mainnet)EVM-compatible JSON-RPC interface for Kite Chain mainnet (chain ID 2366, native token KITE), available over...Kite Chain JSON-RPC (Testnet)EVM-compatible JSON-RPC interface for Kite Chain testnet (chain ID 2368), paired with a public faucet and t...Mina Daemon GraphQL APIGraphQL API exposed by a running Mina daemon (node) for querying node, account, and chain state and submitt...Paystand Developer APIPaystand v3 REST API for B2B payments: create and manage payments, refunds, disputes, payers, customer bank...Ronin JSON-RPC APIEthereum-compatible JSON-RPC endpoint for the Ronin network — read chain state, submit transactions, call c...Ronin Skynet Web3 APIREST Web3 data API on the Ronin blockchain — query accounts, NFTs, tokens, collections, blocks, smart contr...LAOS Network APIPublic GraphQL API maintained by the LAOS Foundation for Bridgeless Minting and Evolution of NFTs. Create c...Futureverse Asset Register APIRelay-compliant GraphQL API for the Asset Register — a metadata ledger that defines what an asset is, what ...The Root Network Node RPCPublic archive-node RPC for The Root Network mainnet, exposing both the Substrate JSON-RPC surface (author,...Taurus-EXPLORER APIBlockchain node and indexing services providing normalized access to on-chain data across dozens of support...Everledger Platform API (Amplify)The Everledger Platform API — marketed as Amplify — is a suite of REST APIs that let organizations access a...Monero Blockchain APIBlockchain data and block operationsFilecoin Glif Lotus JSON-RPC APIPublic, load-balanced Lotus node endpoint hosted by Glif providing read-only access to the Filecoin mainnet...Thru Explorer MCP ServerOfficial hosted Model Context Protocol server on the Thru block explorer. Exposes eight read-only tools (ge...Thru gRPC APIHigh-performance proto3 gRPC API (with gRPC-Web for browsers) for the Thru blockchain. QueryService exposes...Sui GraphQL RPCA generally available RPC service for flexible reads, transaction submission, and simulation backed by the ...Sui JSON-RPC API (Deprecated)The legacy JSON-RPC API for interacting with Sui full nodes, providing methods for querying objects, transa...Hydromancer REST APIHyperliquid data REST API using a single POST /info operation dispatcher (type field selects the operation)...Hydromancer WebSocket APIReal-time WebSocket streams for Hypercore events, orderbooks (L2/L4), trades, and account updates. API key ...Hypernative APIThe Hypernative REST API exposes the platform's monitoring, detection, screening and automated-response sur...EOSIO Nodeos History APIThe history_api_plugin exposes endpoints under /v1/history for retrieving historical actions, transactions,...EOSIO Nodeos Net APIThe net_api_plugin exposes endpoints under /v1/net for inspecting and managing peer-to-peer connections of ...EOSIO Nodeos Producer APIThe producer_api_plugin exposes endpoints under /v1/producer for controlling block production on a node, in...Cometh Connect Bundler APIERC-4337 bundler JSON-RPC endpoint. Accepts User Operations into the mempool, estimates UserOp gas, returns...Cometh Connect Paymaster APIERC-4337 paymaster JSON-RPC endpoint for transaction sponsorship (pm_sponsorUserOperation, pm_supportedEntr...World ChainOP Stack Ethereum L2 designed to prioritise verified humans with reduced fees and gas allowances for World ...Provenance Blockchain APIPublic Cosmos SDK REST (LCD / gRPC-gateway), gRPC, and Tendermint RPC interface to the Provenance Blockchai...Morph Explorer APIBlockscout-based block explorer API for Morph — REST v2 and GraphQL over blocks, transactions, addresses, t...Morph JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API (eth_*, net_*, web3_*) plus Morph-specific methods such as morph_getBl...Zcash JSON-RPC API (zcashd)The primary JSON-RPC interface exposed by zcashd, the original Zcash full node. Backwards compatible with B...Zebra JSON-RPC APIThe JSON-RPC API provided by zebrad, the Zcash Foundation's independent Zcash full node implementation writ...Sei EVM JSON-RPC APIEthereum-compatible JSON-RPC API for interacting with Sei's EVM layer. Supports standard Ethereum methods f...Airstack GraphQL APIThe primary Airstack API offering composable GraphQL queries across on-chain and off-chain Web3 data. Query...Litecoin Blockchain APIChain state information endpointsAxie Experience Points (AXP) APIREST API for Axie Experience Points, the ecosystem-wide off-chain progression system for Axies. Partner gam...Axie Infinity Origins APIRead-only REST API for Axie Infinity: Origins community game data — list and fetch cards, runes, charms and...Aleo RPC APIFree public JSON-RPC 2.0 API for reading the Aleo zero-knowledge blockchain — latest blocks and heights, tr...Iron Fish Public REST APIHosted public REST API (the block-explorer and faucet backend) exposing blocks, transactions, and network d...SKALE JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API served by SKALE Chains (per-chain RPC/WSS endpoints), plus SKALE Progr...DeSo Backend APIThe HTTP JSON API served by every DeSo node — data endpoints (profiles, posts, users, NFTs, creator/DAO coi...=nil; JSON-RPC APIEthereum-style JSON-RPC 2.0 API exposing the =nil; cluster — blocks, transactions (messages), accounts, con...
Emerging 23 Early or largely undocumented
Aurora JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the Aurora EVM network of virtual chains on NEAR. Exposes the stan...SimpleHash NFT & Token APIMulti-chain REST API providing NFT metadata, ownership, transfers, floor prices, listings, bids, spam score...5ireChain Mainnet JSON-RPCEthereum-compatible JSON-RPC 2.0 endpoint for the 5ireChain mainnet (EIP-155 chain ID 995, native currency ...5ireChain Native (Substrate) RPCSubstrate/Polkadot-SDK RPC surface of the 5ireChain node, reached over WebSocket (default port 9944) and co...5ireChain Thunder Testnet JSON-RPCEthereum-compatible JSON-RPC 2.0 endpoint for the 5ireChain Thunder testnet (EIP-155 chain ID 997, native c...HashKey Cloud Staking APIInstitutional staking API to onboard broker users, generate and track deposits, assign/exit validators, dri...DeSo Backend APIThe HTTP API served by every DeSo node. It exposes transaction-construction endpoints (social, financial, N...Hyperledger Cacti APIHyperledger Cacti (formerly Cactus) is a pluggable enterprise-grade framework for cross-chain transactions,...Hyperledger Fabric APIHyperledger Fabric is a permissioned distributed ledger platform. Programmatic access is provided via the F...Hyperledger FireFly APIHyperledger FireFly is a multiparty system orchestration framework providing REST APIs for tokens, messages...Dash Insight REST APIOpen-source REST and WebSocket API for querying the Dash Core (layer 1) blockchain. Provides endpoints for ...BNY Data On-ChainPublic, smart-contract-only product that broadcasts BNY-attested fund accounting data to public blockchains...Bitfinity EVM JSON-RPCStandard Ethereum JSON-RPC 2.0 interface to the Bitfinity EVM mainnet (Chain ID 355110). Supports the stand...Quant Overledger APIOverledger APIs provide a single unified interface for building cross-ledger applications, including endpoi...ChainlinkBuild hybrid smart contracts with ChainlinkThe Block Ecosystems / Data APIProgrammatic access to The Block's library of proprietary blockchain and ecosystem datasets and charts. Lic...Boardroom Governance APIThe Boardroom Governance API helps developers fetch and display governance data across DAOs and networks. P...Cypherium JSON-RPC APIEthereum-compatible JSON-RPC node API for the Cypherium Layer-1 mainnet — eth, web3, net, personal, miner, ...Rosetta Cypherium APICoinbase Rosetta API (Data + Construction) reference implementation for Cypherium, enabling standardized bl...APEX on X1 APIAgent-facing API of APEX on the X1 blockchain, served from apexfaucet.xyz: a remote MCP server at /api/mcp ...xRocket Exchange APIREST API for creating/canceling market/limit orders, retrieving order books, tracking pair rates, executing...xRocket Pay APIREST API (v2) to manage cheques, transfers, invoices, withdrawal links, withdrawals, mass transfers and que...xRocket Pay REST APIBearer-authenticated REST API for crypto payments: cheques, transfers, invoices, withdrawals, mass transfer...
Minimal 9 Almost no public developer surface
RACE ProtocolDeveloper guide and SDK/CLI surface for writing, publishing, and running WASM game bundles on the RACE Prot...LF Decentralized Trust APIProgrammatic access to LF Decentralized Trust blockchain frameworks, ledger APIs, and identity tools.Elementus Attribution APIREST API that resolves a batch of blockchain addresses to attribution data — beneficial owner, custodian, e...NownodesBlockchain-as-a-service solution that provides high-quality connection via APISteemBlockchain-based blogging and social media websiteWatchdataProvide simple and reliable API access to Ethereum blockchainWalltimeTo retrieve Walltime's market infoChainpointChainpoint is a global network for anchoring data to the Bitcoin blockchainApparatus (Topl) Node and Genus gRPC APIThe gRPC interface to the Apparatus (Topl) blockchain: NodeRpc on the Bifrost full node for submitting tran...
Companies reaching this through an API (2)
These companies publish an API, specification or operation carrying “Blockchain” 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
Frequency
80.8
log-scaled weighted occurrences
Breadth
18.9
spread across providers
Quality lift
32.4
mean composite of providers using it
Cohesion
56.0
strength of nearest seed neighbor
Where this tag sits
729 providers carry this tag directly, and 876 counting the 16 narrower tags below and the 5 beneath them — 147 more to reach.
Cosmos
15 providers
Decentralized Exchange
20 providers
Distributed Ledger
23 providers
EVM
58 providers
Layer 1
26 providers
MEV
10 providers
On-Chain Data
12 providers
Real World Assets
15 providers
Smart Contracts
129 providers
Validator
14 providers
Zero-Knowledge Proofs
14 providers
DeFi
304 providers
Ethereum
205 providers
Solana
86 providers
NFT
126 providers
Layer 2
31 providers
Related tags
Web3 410 co-occurrences
DeFi 240 co-occurrences
Cryptocurrency 209 co-occurrences
Ethereum 163 co-occurrences
Crypto 156 co-occurrences
Smart Contracts 130 co-occurrences
NFT 112 co-occurrences
Wallets 125 co-occurrences
Where this tag comes from
Provider tag729
Api tag172
Openapi tag5
Openapi op tag12
Cohort brief
Auto-generatedThe 703 providers in the APIs.io catalog tagged Blockchain, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
703
all scored
Mean Kin Score
27.2
+4.3 vs catalog 22.9
Mean Agent Readiness
15.3
+3.4 vs catalog 11.9
Spread
0–69.5
median 27.8 · σ 16.3
How the 703 split by band
Exemplar 2Strong 34Developing 146Thin 195Emerging 171Minimal 155
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Developer Ergonomics | 37.6 | 23.2 | +14.4 | 703 |
| Contract Quality | 23.7 | 17.6 | +6.1 | 703 |
| Discoverability | 63 | 58.1 | +4.9 | 703 |
| Operational Transparency | 18 | 13.7 | +4.3 | 703 |
| Contract Governance | 6.1 | 6.3 | -0.2 | 703 |
| Access Clarity | 22.5 | 26.5 | -4 | 703 |
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
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 18% | 14% | +4 |
| MCP server (first-party) | 17% | 12% | +5 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 5% | 11% | -6 |
| Security | 99% | 98% | +1 |
| Arazzo workflows | 2% | 2% | 0 |
| Governance rules | 12% | 14% | -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.
Top by Kin Score
- 1 FeedOracle Technologies 69.5
- 2 AlgoVoi 67.2
- 3 Solana 65.9
- 4 imgauth — API di attestazione opere digitali 65.7
- 5 Solidus Labs 65.5
- 6 Crypto.com 65
- 7 Immutable 64.4
- 8 Celestia 63.9
- 9 MolTrust 63.3
- 10 Braiins 63.1
Top by Agent Readiness
- 1 Ultravioleta DAO 69.1
- 2 Cymetica 63.3
- 3 FeedOracle Technologies 62.8
- 4 Art Blocks 60
- 5 Immutable 58.9
- 6 CryptoCompare 57.7
- 7 Tesser 56.1
- 8 Hedera 56.1
- 9 Lukka 55
- 10 AlgoVoi 53.4
All 729 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
5 October 2026, across 29093
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
Every tag here is available over the APIs.io API and to AI agents over MCP.