established · 0.0 marketcapability domainschema

JSON-RPC

Score 25.2 / 100 54 providers +53 via APIs 148 APIs Search apis.io →

Providers using this tag (54)

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

Developing 11 Usable, with meaningful gaps to close
LineaBlockchainEthereumLayer 2zkEVM1 API48.9KusamaCompanyCryptoBlockchainWeb31 API47.5OptimismLayer 2EthereumOP StackSuperchain1 API45.6ZircuitCompanyCryptoBlockchainLayer 21 API43.5MozSEOSearchMarketingAnalytics3 APIs43.4Gunzilla GamesCompanyGamingBlockchainWeb32 APIs43.2Mysten LabsCompanyBlockchainWeb3Sui3 APIs42.7ConsensysCompanyInfrastructureBlockchainEthereum1 API42.6ThunderCoreCompanyCryptoBlockchainEVM4 APIs40.9BetfairBetting ExchangeSports BettingWageringTrading1 API40.5TendermintCompanyInfrastructureBlockchainConsensus1 API39.4
Thin 25 Limited public surface area
StarkwareCompanyBlockchainEthereumLayer 24 APIs38.7ArbitrumLayer 2EthereumRollup1 API38.6NervosCompanyCrypto Web3BlockchainLayer 11 API38.4InfStonesCompanyBlockchainNode InfrastructureStaking1 API38.3MonadBlockchainLayer 1EVMHigh Performance1 API37.7FlashbotsMEVEthereumBlockchain1 API37.1Matter LabsCompanyBlockchainEthereumLayer 21 API35.9MobilecoinCompanyCryptocurrencyPaymentsBlockchain1 API35.6Sky MavisCompanyBlockchainWeb3Gaming3 APIs35.0StarknetLayer 2EthereumValidity RollupZK1 API34.9KiteAgentic PaymentsAI Agentsx402Stablecoins3 APIs34.3ScrollzkEVMLayer 2EthereumRollup1 API33.8MezoCompanyCrypto Web3BlockchainBitcoin2 APIs32.7MoneroCryptocurrencyPrivacyBlockchain2 APIs32.6Mantle NetworkLayer 2EthereumRollupEigenDA8 APIs32.0CeloCompanyBlockchainEthereum L2Web31 API31.4ComethCompanyBlockchainAccount AbstractionERC-43373 APIs30.6EthereumBlockchainDeFiEthereum1 API30.3BaseLayer 2EthereumOP StackSuperchain1 API29.3LitecoinCryptocurrencyBlockchainLitecoinLTC3 APIs28.9BerachainBlockchainLayer 1EVMProof of Liquidity10 APIs28.4Demox LabsCompanyBlockchainZero KnowledgeCryptocurrency1 API28.2ZeroDevAccount AbstractionSmart WalletsERC-4337EIP-77021 API27.8Model Context Protocol (MCP)MCPAI AgentsToolsResources17 APIs27.1Skale LabsCompanyBlockchainWeb3Smart Contracts1 API26.9
Emerging 17 Early or largely undocumented
=nil; FoundationCompanyZk InfrastructureBlockchainLayer 21 API26.0AuroraCompanyBlockchainEVMWeb31 API25.3Quai NetworkCompanyLayer 1BlockchainCryptocurrency1 API25.3LineaBlockchainLayer 2EthereumzkEVM10 APIs24.55ireBlockchainLayer 1Smart ContractsEVM3 APIs23.4Alpen LabsCompanyCryptoBitcoinBlockchain1 API23.4Offchain LabsCompanyBlockchainEthereumLayer 23 APIs23.2Sorella LabsCompanyCrypto InfrastructureDeFiDecentralized Exchange1 API21.9Manta NetworkCompanyLayer 2BlockchainEthereum2 APIs21.8Ronin NetworkSidechainEthereumGamingNFT11 APIs20.4AcalaCompanyCryptoBlockchainDeFi1 API20.1HamsaCompanyFinancial-ServicesBlockchainPayments19.9Arch NetworkCompanyCrypto Web3BitcoinBlockchain18.6InfinitySwapCompanyDeFiBlockchainEthereum1 API18.5FastLaneCompanyCrypto Web3BlockchainMEV18.4Ancient8CompanyCryptoBlockchainEthereum2 APIs17.0CypheriumCompanyCryptoBlockchainLayer 12 APIs13.9
Minimal 1 Almost no public developer surface
BitcoinCompanyCryptoCryptocurrencyBlockchain9.3

APIs with this tag (147)

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 2 Complete, well-documented, and agent-ready
Qlik Engine APIJSON-RPC WebSocket API for interacting with the Qlik Associative Engine, creating and manipulating apps, an...70.5SignalWire Calling API (JSON-RPC)An OpenRPC 1.3.2 contract for real-time control of live calls over RELAY — 8 methods (calling.dial, calling...68.9
Strong 2 Solid coverage with minor gaps
Nutshell Legacy JSON-RPC APINutshell's original JSON-RPC API, available since 2010. Nutshell states it is no longer adding new endpoint...58.5Codashop and Coda Webstore Fulfillment APIThe publisher-implemented JSON-RPC fulfillment contract Coda calls to deliver purchases made on Codashop an...56.8
Developing 19 Usable, with meaningful gaps to close
Linea JSON-RPC APIStandard Ethereum JSON-RPC API plus Linea-specific extensions available at the public endpoint rpc.linea.bu...48.9Kusama JSON-RPC APIThe public Substrate JSON-RPC 2.0 interface to the Kusama relay chain. Probed live on 2026-07-19: 130 metho...47.5Blockdaemon RPC APIProduction-ready shared and dedicated JSON-RPC and REST node endpoints across 50+ protocols including Bitco...47.40G Chain JSON-RPCEthereum-compatible JSON-RPC endpoint for the 0G Chain mainnet ("Aristotle", chain ID 16661), an AI-focused...47.1SharpSpring Open APIThe SharpSpring (Constant Contact Lead Gen & CRM) Open API — a single HTTPS POST endpoint that accepts a JS...47.0Deribit WebSocket APIJSON-RPC over WebSocket interface for real-time bidirectional communication with the Deribit exchange. Reco...46.7OP Mainnet JSON-RPCPublic Ethereum JSON-RPC endpoint for OP Mainnet (chain ID 10). Supports standard eth_* methods plus Optimi...45.6OP Sepolia JSON-RPCPublic Ethereum JSON-RPC endpoint for the OP Sepolia testnet (chain ID 11155420) used for development and i...45.6Optimism JSON-RPC APIStandard Ethereum JSON-RPC method invocation.45.6Zircuit JSON-RPC APIStandard Ethereum JSON-RPC 2.0 interface to the Zircuit L2 network (HTTP and WebSocket) for reading chain s...43.5zkSync Era Mainnet JSON-RPCJSON-RPC endpoint for zkSync Era mainnet (chain ID 324). Implements standard eth_* methods plus zks_* exten...43.4zkSync Era Sepolia JSON-RPCJSON-RPC endpoint for the zkSync Era Sepolia testnet (chain ID 300) used for development, contract deployme...43.4GUNZ Chain JSON-RPC APIThe public Ethereum-compatible JSON-RPC endpoint for the GUNZ L1 chain, an Avalanche subnet running Subnet-...43.2Sui JSON-RPC APIThe Sui full-node JSON-RPC API (OpenRPC 1.2.6) for reading objects, coins, balances, events, checkpoints, d...42.7Infura Web3 APIInfura's managed Web3 API surface — JSON-RPC 2.0 access to Ethereum and 40+ EVM networks (Base, Arbitrum, O...42.6ThunderCore Mainnet JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the ThunderCore mainnet (chain ID 108, TT gas token). Supports the...40.9ThunderCore Testnet JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the ThunderCore testnet (chain ID 18, TST gas token), with a fauce...40.9Routescan Geth/Parity Proxy APIEthereum JSON-RPC compatible proxy endpoints for standard methods including eth_blockNumber, eth_getBlockBy...40.6NetApp Element APIAPI for NetApp Element software and NetApp HCI storage management.40.4
Thin 101 Limited public surface area
Arbitrum JSON-RPC APIEthereum-compatible JSON-RPC 2.0 endpoint38.6Arbitrum Nova JSON-RPCPublic Ethereum JSON-RPC endpoint for Arbitrum Nova (chain ID 42170), an AnyTrust chain with a Data Availab...38.6Arbitrum One JSON-RPCPublic Ethereum JSON-RPC endpoint for Arbitrum One mainnet (chain ID 42161), the flagship optimistic rollup...38.6Arbitrum Sepolia JSON-RPCPublic Ethereum JSON-RPC endpoint for the Arbitrum Sepolia testnet (chain ID 421614).38.6Hegic Smart Contracts (Arbitrum)Hegic's core options protocol is implemented as smart contracts on Arbitrum One. Developers can interact di...38.5CKB JSON-RPC APIPublic JSON-RPC 2.0 interface to Nervos CKB nodes for querying chain state (blocks, transactions, cells), s...38.4Qlik Sense Engine JSON APIWebSocket protocol API using JSON-RPC for interacting with the Qlik Associative Engine.38.1HyperEVM JSON-RPCEVM-compatible JSON-RPC endpoint exposed by Hyperliquid for deploying and interacting with smart contracts ...37.9Monad JSON-RPC APIFull JSON-RPC method reference — standard Ethereum eth_*, net_*, web3_*, debug_*, and trace_* methods plus ...37.7Monad Mainnet JSON-RPCPublic Ethereum-compatible JSON-RPC endpoint for Monad mainnet (chain ID 143, native token MON). Hosted on ...37.7Monad Testnet JSON-RPCPublic JSON-RPC endpoint for the Monad public testnet, used for application development, integration testin...37.7Syndica ChainStream APIChainStream is Syndica's real-time Solana data streaming API. It consolidates updates from multiple validat...37.7Syndica Solana RPC (HTTP) APIHigh-performance Solana JSON-RPC HTTP endpoints served from a fault-tolerant elastic-node architecture acro...37.7Flashbots Auction Relay (JSON-RPC)JSON-RPC endpoint for submitting bundles and private transactions to the Flashbots block builder. Supports ...37.1Flashbots Auction Relay (Sepolia Testnet)Sepolia testnet instance of the Flashbots Auction JSON-RPC relay for bundle submission and testing without ...37.1Flashbots Protect RPCPublic-facing Ethereum JSON-RPC endpoint that routes transactions through Flashbots' private mempool to pro...37.1Uniblock JSON-RPC APIThe Uniblock JSON-RPC API provides a single endpoint for standard JSON-RPC calls across hundreds of blockch...37.0Flipside Crypto JSON-RPC APIThe JSON-RPC API from Flipside Crypto — 1 operation(s) for json-rpc.36.6Qlik Engine JSON-RPC APIThe JSON-RPC API over WebSocket that enables interaction with the Qlik Associative Engine for Qlik Sense ap...36.6Blast JSON-RPC APIEthereum-compatible JSON-RPC methods exposed by the Blast node.36.3Blast Mainnet JSON-RPCPublic Ethereum-compatible JSON-RPC endpoint for Blast mainnet (chain ID 81457). Supports the standard eth_...36.3Blast Sepolia Testnet JSON-RPCPublic JSON-RPC endpoint for the Blast Sepolia testnet (chain ID 168587773), used for application developme...36.3HyperRPC JSON-RPC APIRead-only JSON-RPC endpoint optimised for data-intensive operations, providing up to 5x performance improve...36.3Celestia Node Admin APIJSON-RPC methods in the node module of celestia-node. Provides administrative introspection over the runnin...36.0Celestia Node Blob APIJSON-RPC methods in the blob module of celestia-node. Submit blobs to one or more namespaces with blob.Subm...36.0Celestia Node Blobstream APIJSON-RPC methods in the blobstream module of celestia-node. Generates inclusion proofs against Blobstream d...36.0Celestia Node DA APIJSON-RPC methods in the da module of celestia-node implementing the modular Data Availability interface use...36.0Celestia Node DAS APIJSON-RPC methods in the das module of celestia-node. Operational introspection over the Data Availability S...36.0Celestia Node Fraud APIJSON-RPC methods in the fraud module of celestia-node. Exposes fraud proof retrieval and subscription for t...36.0Celestia Node Header APIJSON-RPC methods in the header module of celestia-node. Query ExtendedHeaders with header.LocalHead, header...36.0Celestia Node P2P APIJSON-RPC methods in the p2p module of celestia-node. libp2p-level introspection and control over the Celest...36.0Celestia Node Share APIJSON-RPC methods in the share module of celestia-node. Provides direct access to Celestia's share-level dat...36.0Celestia Node State APIJSON-RPC methods in the state module of celestia-node. Exposes state-level operations including account bal...36.0XMTP App Chain RPC APIJSON-RPC API for the XMTP Layer-3 appchain built on Arbitrum and settling to Base. Used for smart contract ...36.0ZKsync Era JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the ZKsync Era ZK rollup. Standard eth_* methods plus the ZKsync-s...35.9MobileCoin Full-Service Wallet APIJSON-RPC 2.0 wallet backend for the MobileCoin network - manage accounts and addresses, build and submit tr...35.6Vana L1 JSON-RPCStandard Ethereum JSON-RPC for the EVM-compatible Vana L1 blockchain, which records registrations, grants, ...35.5Ronin JSON-RPC APIEthereum-compatible JSON-RPC endpoint for the Ronin network — read chain state, submit transactions, call c...35.0Juno Full NodeGo implementation of a Starknet full node from Nethermind that serves the Starknet JSON-RPC and acts as a s...34.9Pathfinder Full NodeRust implementation of a Starknet full node from Equilibrium that serves the Starknet JSON-RPC, syncs from ...34.9Starknet JSON-RPC SpecificationVersioned JSON-RPC specification implemented by Starknet full nodes (Pathfinder, Juno, Papyrus) and infrast...34.9Starknet Mainnet RPC (Public Providers)Starknet Mainnet (chain ID SN_MAIN) is reached via the Starknet JSON-RPC at hosted providers — Infura, Alch...34.9Starknet Sepolia RPC (Public Providers)Public JSON-RPC endpoint for Starknet Sepolia testnet (chain ID SN_SEPOLIA) for development and integration...34.9QuickNode Core RPC APIMulti-chain JSON-RPC, REST, and gRPC endpoints across 77+ blockchains (Ethereum, Solana, Polygon, Arbitrum,...34.4Kite Chain JSON-RPC (Mainnet)EVM-compatible JSON-RPC interface for Kite Chain mainnet (chain ID 2366, native token KITE), available over...34.3Kite Chain JSON-RPC (Testnet)EVM-compatible JSON-RPC interface for Kite Chain testnet (chain ID 2368), paired with a public faucet and t...34.3Sui JSON-RPC API (Deprecated)The legacy JSON-RPC API for interacting with Sui full nodes, providing methods for querying objects, transa...34.2Zora Network RPC APIJSON-RPC access to the Zora Network L2 chain (Chain ID 7777777), an OP Stack rollup on Ethereum. Compatible...34.0Scroll JSON-RPC (Mainnet)Standard Ethereum JSON-RPC interface for Scroll mainnet (chain ID 534352). Used by wallets, dApps, indexers...33.8Scroll JSON-RPC (Sepolia Testnet)Standard Ethereum JSON-RPC endpoint for Scroll Sepolia testnet (chain ID 534351), used for development, int...33.8Scroll JSON-RPC APIEthereum JSON-RPC over HTTP POST33.8Helius Digital Asset Standard (DAS) APISolana JSON-RPC API for unified asset queries (compressed NFTs, regular NFTs, tokens) including getAsset, g...33.1Helius Photon RPC (ZK Compression)Indexed RPC for Solana ZK compression (compressed accounts).33.1Helius SenderParallel transaction routing through Helius and Jito for inclusion latency optimization.33.1Helius Solana RPCSolana JSON-RPC and WebSocket endpoints with enhanced WebSockets, archival data, and staked connections.33.1Tenderly Node RPCProduction-grade JSON-RPC node infrastructure supporting 80+ EVM networks including Ethereum, Arbitrum, Opt...32.9Mezo Chain EVM JSON-RPCEVM-compatible Ethereum JSON-RPC interface to the Mezo chain (eth_* methods) for reading chain state and su...32.7Filecoin Calibration Testnet Glif APIGlif-hosted public Lotus node endpoint for the Filecoin Calibration testnet. Provides the same read-only JS...32.6Filecoin Glif Lotus JSON-RPC APIPublic, load-balanced Lotus node endpoint hosted by Glif providing read-only access to the Filecoin mainnet...32.6Monero JSON-RPC APIJSON-RPC 2.0 dispatch endpoint32.6Reown Blockchain APIMulti-chain JSON-RPC over HTTPS used by AppKit and partners; provides on-chain reads, gas, swaps, and onram...32.3XRPL JSON-RPC API (Mainnet)JSON-RPC interface to the XRP Ledger mainnet for querying accounts, transactions, ledgers, order books, AMM...32.1XRPL JSON-RPC API (Testnet)JSON-RPC interface to the XRP Ledger Altnet testnet for development and testing. Supports the same method s...32.1EOSIO Nodeos History APIThe history_api_plugin exposes endpoints under /v1/history for retrieving historical actions, transactions,...32.0EOSIO Nodeos Net APIThe net_api_plugin exposes endpoints under /v1/net for inspecting and managing peer-to-peer connections of ...32.0EOSIO Nodeos Producer APIThe producer_api_plugin exposes endpoints under /v1/producer for controlling block production on a node, in...32.0Mantle JSON-RPC (Mainnet)Standard Ethereum JSON-RPC endpoint for Mantle mainnet (chain ID 5000). Used by wallets, dApps, indexers, a...32.0Mantle JSON-RPC (Sepolia Testnet)Standard Ethereum JSON-RPC endpoint for the Mantle Sepolia testnet, used for development, contract deployme...32.0Mantle WebSocket (Mainnet)WebSocket endpoint for real-time JSON-RPC subscriptions on Mantle mainnet - new blocks, new pending transac...32.0Azimuth Layer 2 Roller HTTP RPC-APIThe HTTP RPC-API of Azimuth's Layer 2 naive rollup roller, primarily intended for interacting with Bridge. ...31.9Infura JSON-RPC APIMulti-chain JSON-RPC over HTTPS and WebSockets across 23+ networks (Ethereum, Linea, Polygon, Arbitrum, Opt...31.8Infura Solana JSON-RPCSolana JSON-RPC and WebSocket endpoints.31.8The Root Network Node RPCPublic archive-node RPC for The Root Network mainnet, exposing both the Substrate JSON-RPC surface (author,...31.3Zcash JSON-RPC API (zcashd)The primary JSON-RPC interface exposed by zcashd, the original Zcash full node. Backwards compatible with B...31.1Zcash Payment API (z_ methods)The Zcash-specific extension to the JSON-RPC interface that enables shielded (private) transaction operatio...31.1Zebra JSON-RPC APIThe JSON-RPC API provided by zebrad, the Zcash Foundation's independent Zcash full node implementation writ...31.1Cometh Connect Bundler APIERC-4337 bundler JSON-RPC endpoint. Accepts User Operations into the mempool, estimates UserOp gas, returns...30.6Cometh Connect Paymaster APIERC-4337 paymaster JSON-RPC endpoint for transaction sponsorship (pm_sponsorUserOperation, pm_supportedEntr...30.6Glama MCP GatewayReverse-proxy MCP gateway that fronts hosted, remote, and custom MCP servers under a per-user endpoint of t...30.3Tatum RPC GatewayJSON-RPC over HTTPS to 130+ blockchain networks (Ethereum, Bitcoin, Solana, Polygon, BNB, Avalanche, Algora...30.2Alchemy Bundler API (ERC-4337)JSON-RPC bundler endpoints for ERC-4337 user operations (eth_sendUserOperation, eth_estimateUserOperationGa...30.1Alchemy Node API (JSON-RPC)Multi-chain JSON-RPC over HTTPS and WebSockets covering standard eth_*, solana, and other chain methods, pl...30.1Alchemy Simulation APIREST/JSON-RPC API for simulating transactions and asset changes before broadcasting.30.1Privy Wallets RPCJSON-RPC method passthrough for signing transactions and arbitrary RPC calls against Privy-managed wallets.29.4Base Flashblocks RPCPre-confirmation JSON-RPC endpoint exposing Flashblocks — sub-block streams of ordered transactions that al...29.3Base JSON-RPC APIEthereum JSON-RPC 2.0 endpoint29.3Base Mainnet JSON-RPCStandard Ethereum JSON-RPC endpoint for Base Mainnet (chain ID 8453). Supports eth_*, net_*, web3_*, and Op...29.3Base Sepolia JSON-RPCPublic JSON-RPC endpoint for the Base Sepolia testnet (chain ID 84532) used for development, contract deplo...29.31inch Web3 RPC APIHosted JSON-RPC endpoints for 14+ EVM and non-EVM networks, exposed through the 1inch API key for unified r...29.2Sei EVM JSON-RPC APIEthereum-compatible JSON-RPC API for interacting with Sei's EVM layer. Supports standard Ethereum methods f...29.2Litecoin JSON-RPC APILitecoin Core JSON-RPC 2.0 interface. All methods are accessed via a single POST endpoint using the method ...28.9Push Chain EVM ClientPush Chain is 100% EVM-compatible; developers can initialize standard Ethers v6 or Viem clients against Pus...28.7Berachain Bepolia Testnet JSON-RPCPublic JSON-RPC endpoint for the Bepolia testnet (chain ID 80069), used for application development and int...28.4Berachain Mainnet JSON-RPCPublic Ethereum-compatible JSON-RPC endpoint for Berachain mainnet (chain ID 80094). Supports the standard ...28.4Morph JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API (eth_*, net_*, web3_*) plus Morph-specific methods such as morph_getBl...28.4Aleo RPC APIFree public JSON-RPC 2.0 API for reading the Aleo zero-knowledge blockchain — latest blocks and heights, tr...28.2Graph Node Admin JSON-RPC (self-hosted)JSON-RPC admin interface to a self-hosted Graph Node for deploying, listing, and managing subgraphs. Public...28.1ZeroDev JSON-RPC APIThe JSON-RPC API from ZeroDev — 1 operation(s) for json-rpc.27.8MCP SpecificationThe authoritative protocol definition for the Model Context Protocol, maintained at modelcontextprotocol.io...27.1SKALE JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API served by SKALE Chains (per-chain RPC/WSS endpoints), plus SKALE Progr...26.9Model Context Protocol (MCP)An open JSON-RPC protocol that lets AI agents talk to tools, resources, and prompts through a uniform serve...26.6
Emerging 22 Early or largely undocumented
=nil; JSON-RPC APIEthereum-style JSON-RPC 2.0 API exposing the =nil; cluster — blocks, transactions (messages), accounts, con...26.0Odoo External APIOdoo's external API for integrating with the platform using JSON-RPC and XML-RPC protocols for accessing al...26.0Odoo JSON-RPC APIJSON-RPC transport for the same operations26.0Aurora JSON-RPC APIEthereum-compatible JSON-RPC 2.0 API for the Aurora EVM network of virtual chains on NEAR. Exposes the stan...25.3Linea Mainnet JSON-RPCPublic Ethereum-compatible JSON-RPC endpoint for Linea mainnet (chain ID 59144). Supports the standard eth_...24.5Linea Sepolia Testnet JSON-RPCPublic JSON-RPC endpoint for the Linea Sepolia testnet (chain ID 59141), used for application development, ...24.5Linea-Specific JSON-RPC MethodsLinea custom JSON-RPC methods including linea_estimateGas (returns recommended gas limit, base fee, and pri...24.55ireChain Mainnet JSON-RPCEthereum-compatible JSON-RPC 2.0 endpoint for the 5ireChain mainnet (EIP-155 chain ID 995, native currency ...23.45ireChain Thunder Testnet JSON-RPCEthereum-compatible JSON-RPC 2.0 endpoint for the 5ireChain Thunder testnet (EIP-155 chain ID 997, native c...23.4JSON-RPC 2.0JSON-RPC 2.0 is a stateless, light-weight remote procedure call (RPC) protocol encoded in JSON. It is widel...22.5Lit Network Node JSON-RPC (SDK-mediated)Threshold-cryptography network of Lit nodes accessed via the Lit JS SDK for signing, encryption, decryption...22.3Manta Atlantic (Substrate JSON-RPC)Substrate/Polkadot parachain JSON-RPC endpoint (WebSocket) for Manta Atlantic (Polkadot Para ID 2104, nativ...21.8Manta Pacific (EVM JSON-RPC)EVM-compatible Ethereum JSON-RPC endpoint for the Manta Pacific Layer-2 rollup (chain ID 169, currency ETH)...21.8Dash Platform DAPI (Decentralized API)Decentralized HTTP API exposing gRPC and JSON-RPC endpoints for both Dash Core layer 1 and Dash Platform la...21.0Ronin JSON-RPC (Mainnet)Standard Ethereum-style JSON-RPC endpoint for Ronin mainnet (chain ID 2020). Used by wallets, games, dApps,...20.4Ronin JSON-RPC (Saigon Testnet)JSON-RPC endpoint for the Saigon testnet (chain ID 2021), used for development, integration testing, and dA...20.4Acala EVM+ JSON-RPCAcala EVM+ exposes a standard Ethereum JSON-RPC API through the EVM+ RPC Adapter, which wraps Substrate RPC...20.1Goldsky Edge RPCHigh-performance JSON-RPC service for EVM networks with advanced debugging and tracing methods. Used as a d...19.7Bitfinity EVM JSON-RPCStandard Ethereum JSON-RPC 2.0 interface to the Bitfinity EVM mainnet (Chain ID 355110). Supports the stand...18.5Ancient8 Mainnet JSON-RPCPublic Ethereum JSON-RPC interface for the Ancient8 Mainnet (chain ID 888888888, currency ETH), available o...17.0Ancient8 Testnet JSON-RPC (Celestia)Public Ethereum JSON-RPC interface for the Ancient8 Celestia testnet (chain ID 28122024, currency ETH), ava...17.0Cypherium JSON-RPC APIEthereum-compatible JSON-RPC node API for the Cypherium Layer-1 mainnet — eth, web3, net, personal, miner, ...13.9
Minimal 1 Almost no public developer surface
Parallel Finance JSON-RPC (polkadot.js)Substrate/Polkadot JSON-RPC interface to the Parallel Finance parachain, accessed over WebSocket with the p...8.4

Companies reaching this through an API (53)

These companies publish an API, specification or operation carrying “JSON-RPC” 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.

0G Labs 1inch Agent Readiness Alchemy API Specifications Blast Blockdaemon Celestia Coda Payments Dash Deribit Envio EOSIO Filecoin Flipside Crypto Futureverse Glama Goldsky Hegic Helius Hyperliquid Infura Lit Protocol Morph NetApp Nutshell Odoo Parallel Finance Privy Push Protocol Qlik Qlik Sense APIs Qlik Sense Enterprise QuickNode Reown Routescan (Snowtrace) Sei SharpSpring SignalWire Sui Syndica Tatum Tenderly The Graph Uniblock Urbit Uzum Vana XMTP XRP Ledger
Show all 53 companies ↓
Zcash zkSync Zora

Score breakdown

Frequency
62.2
log-scaled weighted occurrences
Breadth
1.5
spread across providers
Quality lift
35.1
mean composite of providers using it
Cohesion
15.3
strength of nearest seed neighbor

Related tags

EVM 36 co-occurrences Layer 2 23 co-occurrences Testnet 20 co-occurrences Mainnet 16 co-occurrences Ethereum 37 co-occurrences Smart Contracts 30 co-occurrences RPC 16 co-occurrences Web3 61 co-occurrences

Where this tag comes from

Api tag148
Provider tag54
Openapi tag11
Openapi op tag11

Cohort brief

Auto-generated

The 54 providers in the APIs.io catalog tagged JSON-RPC, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
54
all scored
Mean Kin Score
31
+7.1 vs catalog 23.9
Mean Agent Readiness
13.1
+1.1 vs catalog 12
Spread
9.3–48.9
median 31 · σ 9.2
How the 54 split by band
Exemplar 0Strong 0Developing 11Thin 25Emerging 17Minimal 1
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 47.9 23.4 +24.5 54
Discoverability 73.7 61.2 +12.5 54
Operational Transparency 24.4 13.9 +10.5 54
Contract Quality 23.8 19.8 +4 54
Contract Governance 8.7 6.4 +2.3 54
Access Clarity 20.9 26.5 -5.6 54

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) 13% 10% +3
MCP server (first-party) 15% 13% +2
Agent Skills 0% 0% 0
OAuth scopes 4% 11% -7
Security 100% 96% +4
Arazzo workflows 0% 2% -2
Governance rules 17% 14% +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.

Top by Kin Score
  1. 1 Linea 48.9
  2. 2 Kusama 47.5
  3. 3 Optimism 45.6
  4. 4 Zircuit 43.5
  5. 5 Moz 43.4
  6. 6 Gunzilla Games 43.2
  7. 7 Mysten Labs 42.7
  8. 8 Consensys 42.6
  9. 9 ThunderCore 40.9
  10. 10 Betfair 40.5
Top by Agent Readiness
  1. 1 Nervos 34.9
  2. 2 Mysten Labs 34.5
  3. 3 Flashbots 33.5
  4. 4 Tendermint 29.8
  5. 5 Gunzilla Games 29.3
  6. 6 Kusama 29
  7. 7 InfStones 24.3
  8. 8 Starkware 23.8
  9. 9 Optimism 23.4
  10. 10 Arbitrum 23.4
All 54 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 16 September 2026, across 27514 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.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/json-rpc"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/json-rpc"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/json-rpc/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.