established · 0.0 capabilitymarket resourcedomain

Smart Contracts

Score 26.8 / 100 127 providers +34 via APIs 64 APIs Search apis.io →
Variants seen in the corpus: SMART_CONTRACTSSmart Contracts

Providers using this tag (127)

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

Strong 4 Solid coverage with minor gaps
Solidus LabsCompanyComplianceRegTechTrade Surveillance5 APIs65.1OpenZeppelinWeb3BlockchainSecurity1 API61.6AptosBlockchainWeb3MoveLayer 11 API58.80xCryptocurrencyDeFiDEX AggregatorSwap2 APIs56.3
Developing 26 Usable, with meaningful gaps to close
SIMBA ChainCompanyBlockchainSupply ChainTraceability4 APIs52.3AeternityBlockchainLayer 1Cryptocurrency2 APIs50.5StellarBlockchainCryptocurrencyDecentralized ExchangeLedger4 APIs49.8SupraBlockchainLayer 1OraclesWeb31 API49.2LineaBlockchainEthereumLayer 2zkEVM1 API48.9AlgorandBlockchainCryptocurrencyProof of StakeDeFi3 APIs48.8Oumla LtdCompanyBlockchainDigital AssetsWallet Infrastructure1 API47.9Horizon Blockchain GamesCompanyConsumerBlockchainWeb37 APIs46.7Digital AssetBlockchainTokenizationDigital AssetsFinancial-Services6 APIs45.7BitbondCompanyTokenizationBlockchainDigital Assets2 APIs45.5BasescanBlockchainBaseL2Explorer1 API44.0EnsoCompanyCrypto Web3DeFiBlockchain1 API42.9FortaCompanySecurityBlockchainWeb31 API42.8TransposeBlockchainNFTCryptocurrencyWeb31 API42.8Mysten LabsCompanyBlockchainWeb3Sui3 APIs42.7AelfCompanyBlockchainLayer 1Web32 APIs42.3API3BlockchainOracleDecentralizedData Feeds1 API42.3Gala GamesCompanyBlockchainWeb3Gaming8 APIs42.3HederaDistributed LedgerBlockchainDLTHashgraph1 API42.3AleoCompanyBlockchainZero KnowledgeCryptography1 API41.9BscScanBlockchainBlock ExplorerBNB Smart ChainBSC1 API41.3CardanoBlockchainCryptocurrencyProof of Stake1 API40.9Routescan (Snowtrace)BlockchainExplorerAvalancheEVM1 API40.6PolygonScanBlockchainPolygonExplorerWeb31 API40.1TezosTezosBlockchainTzKTBaking Bad1 API39.9Seismic SystemsCompanyBlockchainPrivacyEncryption1 API39.6
Thin 24 Limited public surface area
NervosCompanyCrypto Web3BlockchainLayer 11 API38.4Dapper LabsCompanyCryptoBlockchainWeb31 API37.2BlocktorchCompanyWeb3ObservabilityMonitoring1 API36.8EnvioBlockchainIndexerGraphQLWeb33 APIs36.3ManifoldNFTCreator ToolsBlockchain1 API35.9thirdwebWeb3BlockchainWallets1 API35.2Thought MachineCompanyBankingCore BankingFinancial-Services2 APIs34.9ParaSwapDeFiDEX AggregatorToken SwapsBlockchain1 API34.3SuiBlockchainMoveWeb3Cryptocurrency1 API34.2GluwaCompanyBlockchainCryptocurrencyStablecoins1 API33.9Art BlocksGenerative ArtNFTOn-Chain ArtBlockchain3 APIs33.3TenderlyWeb3BlockchainEthereum6 APIs32.9ImmunefiCompanySecurityBug BountyVulnerability Disclosure1 API32.8Limit BreakCompanyGamingBlockchain31.5CeloCompanyBlockchainEthereum L2Web31 API31.4FlowBlockchainNFTGamesDeFi1 API31.2OpynDeFiOptionsEthereumSqueeth3 APIs30.9CertoraCompanySecurityFormal Verification30.4EthereumBlockchainDeFiEthereumJSON-RPC1 API30.3ChainlensAnalyticsBlockchainBlock ExplorerCryptocurrencies1 API30.2AngleCompanyStablecoinsDecentralized FinanceBlockchain2 APIs28.9LidoLiquid StakingEthereumStakingDeFi4 APIs27.9CoralCompanyCrypto Web3Solana27.3Skale LabsCompanyBlockchainWeb31 API26.9
Emerging 50 Early or largely undocumented
=nil; FoundationCompanyZk InfrastructureBlockchainLayer 21 API26.0KadenaCompanyCrypto Web3Blockchain2 APIs25.6Mina ProtocolCompanyCrypto Web3BlockchainZero-Knowledge Proofs2 APIs25.5AuroraCompanyBlockchainEVMWeb31 API25.3Quai NetworkCompanyLayer 1BlockchainCryptocurrency1 API25.3HyperledgerBlockchainDistributed LedgerEnterpriseLinux Foundation1 API25.2RedStoneCompanyInfrastructureBlockchainOracle2 APIs24.3AztecCompanyBlockchainPrivacyZero Knowledge23.65ireBlockchainLayer 1EVM3 APIs23.4Alpen LabsCompanyCryptoBitcoinBlockchain1 API23.4Offchain LabsCompanyBlockchainEthereumLayer 23 APIs23.2Rocket PoolBlockchainEthereumLiquid StakingProof of Stake2 APIs23.0DFINITYCompanyBlockchainInternet ComputerICP1 API22.0ElementCompanyDeFiDecentralized FinanceFixed Income21.7Offchain Labs (Arbitrum)CompanyCryptoBlockchainEthereum21.5AgoricCompanyBlockchainJavaScript21.0Lens ProtocolLens ProtocolOnchain SocialWeb3Social Graph6 APIs21.0SuperfluidCompanyCrypto Web3BlockchainDeFi1 API21.0ReflexerCompanyCryptoDeFiStablecoins1 API20.5AcalaCompanyCryptoBlockchainDeFi1 API20.1LevelCompanyStablecoinsDeFiCryptocurrency20.1HalbornCompanySecurityCybersecurityBlockchain19.7Cozy FinanceCompanyDeFiRisk Management19.6MainframeCompanyDeFiBlockchainWeb31 API19.6Quant NetworkBlockchainDistributed LedgerInteroperabilityOverledger1 API19.1CartesiBlockchainLayer 2Optimistic RollupsEthereum19.0BlockVisionCompanyBlockchainWeb3Data Infrastructure1 API18.7Arch NetworkCompanyCrypto Web3BitcoinBlockchain18.6InfinitySwapCompanyDeFiBlockchainEthereum1 API18.5InfinifiCompanyDeFiStablecoinsYield18.1Forte LabsCompanyBlockchainWeb3Compliance17.1Lithium FinanceCompanyCryptoDeFiOracles17.0Term FinanceCompanyDeFiLendingFixed Rate17.0ZamaCompanyCrypto Web3CryptographyFully Homomorphic Encryption17.0My AICompanyRewardsLoyaltyWeb31 API16.4InstadappCompanyCryptoDeFiBlockchain16.3Code4renaCompanySecurityWeb316.2MoolaCompanyDeFiLendingBorrowing15.6IthacaCompanyCrypto InfrastructureEthereumAuthentication15.5FhenixCompanyCrypto Web3BlockchainFully Homomorphic Encryption14.8Silo FinanceCompanyDeFiLendingMoney Markets14.6Exa FinanceCompanyBlockchainWeb3NFT14.5PartyDAOCompanyWeb3BlockchainEthereum14.0BrevisCompanyZk CoprocessorZero-Knowledge ProofszkVM13.7Enosys MarketsCompanyDeFiBlockchainDecentralized Exchange13.4Bright Moments DAOCompanyNFTDAOGenerative Art12.7Warbler Labs IncorporatedCompanyDeFiBlockchainCrypto12.7Anchor ProtocolCompanyCryptoDeFiBlockchain11.3Sound.xyzCompanyMusicWeb3Blockchain11.3Saffron FinanceCompanyCrypto Web3DeFiYield11.1
Minimal 19 Almost no public developer surface
MakerDAOCompanyCrypto DefiDeFiStablecoins10.9MakerCompanyDeFiBlockchainEthereum10.8AmpCompanyCryptoBlockchainEthereum10.7BlurNFTNFT MarketplaceNFT AggregatorNFT Lending10.6Keep NetworkCompanyBlockchainCryptocurrencyBitcoin10.3HourglassCompanyDeFiBlockchainEthereum10.1AmpleforthCompanyCryptoDeFiBlockchain9.4SturdyCompanyCryptoDeFiLending9.4Teller FinanceCompanyFintechDeFiLending8.9SovrynCompanyDeFiBitcoinBlockchain8.5AerodromeCompanyDeFiDEXAMM8.3Alpha FinanceCompanyCrypto Web3DeFiBlockchain7.7QuantstampCompanyEnterpriseBlockchainSecurity7.7Sec3CompanyCrypto Web3SecurityBlockchain7.5YoloRektCompanyCryptoDeFiPrediction Markets7.2Yield ProtocolCompanyCrypto DefiDeFiEthereum6.8ether.fiEthereumLiquid RestakingLiquid StakingRestaking5.2AdjointCompanyFinancial-ServicesTreasuryDistributed Ledger5.0Potion LabsCompanyDeFiOptions3.1
Unrated 4 Not yet scored
ComputableCompanyCryptoBlockchainEthereumDharma LabsCompanyDeFiCryptocurrencyEthereumFei ProtocolCompanyDeFiStablecoinsEthereumFimioCompanyDeveloper ToolsWeb3Fraud Detection

APIs with this tag (64)

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 3 Solid coverage with minor gaps
Fireblocks Tokenization APIDeploy, mint, burn, and manage tokens across the chains supported by Fireblocks Tokenization Engine. Covers...65.5OpenZeppelin Contracts API ReferenceThe OpenZeppelin Contracts library provides a comprehensive collection of modular, reusable, and secure Sol...61.6OpenZeppelin Monitor APIOpenZeppelin Monitor is an open-source blockchain monitoring service that watches for specific on-chain act...61.6
Developing 12 Usable, with meaningful gaps to close
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...52.3Aeternity Node APIThe public HTTP API of the æternity node (v7.3.0) — 79 unauthenticated operations covering chain and genera...50.5Altimate AI SMART_CONTRACTS APIThe SMART_CONTRACTS API from Altimate AI — 1 operation(s) for smart_contracts.50.2Stellar RPC APIThe Stellar RPC API (formerly Soroban RPC) is a JSON-RPC interface for interacting with Soroban smart contr...49.8Supra Automation APIRead and observation surface for Supra's native on-chain automation (AutoFi) registry. Automation tasks are...49.2Supra RPC Node APIPublic, keyless REST + JSON API served by every Supra RPC node. Covers accounts (resources, modules, coin a...49.2Bitbond Token Tool APIProgrammatic token and smart-contract deployment API for Token Tool. Enables minting, burning, transferring...45.5aelf Node Web APIThe AElf node Web API is the REST surface every aelf node exposes: chain status, blocks, block state, trans...42.3Routescan Etherscan-Compatible Contract APIAccess verified smart contract ABIs, source code, and creation transaction data. Supports contract source c...40.6Routescan Etherscan-Compatible Logs APIQuery event logs emitted by smart contracts using filter parameters including address, block range, and up ...40.6TzKT Big Maps APIThe Big Maps API indexes all Tezos big map allocations across smart contracts, exposing individual key-valu...39.9TzKT Contracts APIThe Contracts API provides access to Tezos smart contract metadata, storage, entrypoints, views, and code. ...39.9
Thin 32 Limited public surface area
Hexagate (Chainalysis)Web3 security product (acquired by Chainalysis) that monitors smart contracts and on-chain activity in real...39.2Hegic Smart Contracts (Arbitrum)Hegic's core options protocol is implemented as smart contracts on Arbitrum One. Developers can interact di...38.5Polygon ID Verifier SDKThe Verifier SDK enables web2 and web3 applications to authenticate users based on verifiable credentials w...38.1HyperEVM JSON-RPCEVM-compatible JSON-RPC endpoint exposed by Hyperliquid for deploying and interacting with smart contracts ...37.9SuperRare Smart Contracts - Assets (ERC-721)SuperRare ERC-721 NFT asset contracts including shared minting contracts (SuperRareV1, SuperRareV2), creato...37.7SuperRare Smart Contracts - The BazaarUnified marketplace and auction house smart contract on Ethereum that enables reserve-price auctions, sale ...37.7Blast Gas Revenue APIProgrammatic interface for dApps to claim back a share of the net gas revenue generated by their contracts ...36.3HyperIndex GraphQL APIAuto-generated GraphQL API exposing indexed smart contract events from any EVM-compatible chain. HyperIndex...36.3XMTP App Chain RPC APIJSON-RPC API for the XMTP Layer-3 appchain built on Arbitrum and settling to Base. Used for smart contract ...36.0Manifold Creator Core Smart ContractsOpen-source Solidity smart contract framework for deploying ERC721 and ERC1155 creator-owned NFT contracts....35.9Manifold Marketplace ContractsSmart contract system powering Manifold Gallery listings and Marketplace Widgets. Supports Auction Listings...35.9Manifold Royalty RegistryOn-chain smart contract registry that serves as a single source of truth for NFT royalties across all major...35.9BanQu Smart Contracts APIAutomation workflows that react to system events35.1Cairo LanguageCairo is StarkWare's Turing-complete language for creating provable programs and the canonical smart contra...34.9Thought Machine Vault Core APIVault Core is Thought Machine's cloud-native core banking engine. Its API surface spans a REST Core API for...34.9Band VRFBand VRF is a provably fair, verifiable random function for on-chain randomness. It allows smart contracts ...34.6THORChain Smart Contracts APIThe Smart Contracts API from THORChain — 2 operation(s) for smart contracts.34.0Scroll ContractsSolidity contracts that implement the Scroll rollup - L1 / L2 messengers, gateways, ScrollChain commit/fina...33.8EigenLayer Core ContractsSolidity smart contracts that implement the EigenLayer restaking protocol - StrategyManager, DelegationMana...33.3Tenderly REST APICore REST API for managing Tenderly projects including smart contract simulations, alerts, Web3 Actions, co...32.9Mantle Liquid Staking Protocol (mETH)Mantle LSP issues mETH, a liquid staking token backed by ETH staked to Ethereum validators. Smart contracts...32.0Foundation Smart Contract APIEthereum smart contract interface for direct on-chain interaction with Foundation marketplace contracts. Su...31.1Tatum Smart Contract APIREST API to deploy, invoke, and read smart contracts on EVM and other chains.30.2Sei EVM JSON-RPC APIEthereum-compatible JSON-RPC API for interacting with Sei's EVM layer. Supports standard Ethereum methods f...29.2Hiro Smart Contracts APIRead-only endpoints to obtain Clarity smart contract details29.0Blockscout Smart Contracts APIThe Smart Contracts API from Blockscout — 3 operation(s) for smart contracts.28.9Push Chain Contract Helpers (UEAFactory)On-chain contract helpers deployed at 0x00000000000000000000000000000000000000eA (UEAFactory). getOriginFor...28.7Vesper Contracts API ReferenceSmart contract interface reference for Vesper pools, strategies, PoolAccountant, PoolRewards, and related o...28.7Curve Smart ContractsCurve's primary surface for swaps and liquidity is a set of audited Vyper smart contracts deployed across m...28.6Proof of Liquidity ProtocolBerachain's economic coordination layer — Reward Vaults, BGT, and validator boost contracts that turn block...28.4Raydium Solana ProgramsRaydium's swap, AMM, CLMM, farm, and launchpad programs deployed on Solana.27.7Helium Program Library (Solana)Open-source Solana on-chain programs and TypeScript client SDKs powering the Helium DAO, sub-DAOs, HNT / IO...26.4
Emerging 17 Early or largely undocumented
Hyperledger Fabric APIHyperledger Fabric is a permissioned distributed ledger platform. Programmatic access is provided via the F...25.2Pendle Boros Core Smart ContractsOpen-source Solidity core for Boros — the order-book / margin venue that lets traders long or short yield r...24.3Pendle Router Static (On-chain Helper)RouterStatic is an on-chain read-only helper contract that exposes simulation and quoting functions used by...24.3Pendle SY (Standardized Yield) ContractsPublic repository of Standardized Yield (SY) wrapper contracts that adapt every supported yield-bearing ass...24.3Pendle V2 Core Smart ContractsOpen-source Solidity implementation of the Pendle V2 protocol — Router, MarketFactory, Market, PT, YT, vePE...24.3Sudoswap Smart Contract APIOn-chain smart contract interface for the Sudoswap AMM protocol. Developers interact with LSSVMPairFactory ...23.9Aave V3 Pool (Smart Contracts)Core Aave V3 protocol contracts — Pool, L2 Pool, Wrapped Token Gateway, PoolAddressesProvider, Pool Configu...23.6Aave V4 Protocol (Smart Contracts)Next-generation Aave V4 protocol implementation with unified liquidity layer, hub-and-spoke architecture, a...23.65ireChain Mainnet JSON-RPCEthereum-compatible JSON-RPC 2.0 endpoint for the 5ireChain mainnet (EIP-155 chain ID 995, native currency ...23.4Rocket Pool Protocol API (rocketpool-js)The rocketpool-js library is a TypeScript/JavaScript client for the Rocket Pool protocol's deployed smart c...23.0Lens Protocol Smart ContractsThe Lens v3 smart contracts implement the onchain social graph on Lens Chain. Core primitives include Accou...21.0BNY Data On-ChainPublic, smart-contract-only product that broadcasts BNY-attested fund accounting data to public blockchains...20.5Acala EVM+ JSON-RPCAcala EVM+ exposes a standard Ethereum JSON-RPC API through the EVM+ RPC Adapter, which wraps Substrate RPC...20.1Alchemix Smart Contract APIThe primary developer interface for Alchemix is its on-chain smart contracts deployed on Ethereum Mainnet, ...19.7Quant Overledger APIOverledger APIs provide a single unified interface for building cross-ledger applications, including endpoi...19.1Balancer Smart ContractsVault and Router smart contracts where swaps and liquidity actions are executed on-chain. v2 and v3 version...17.4Pump.fun On-Chain Program (Solana)The deployed Solana program that implements Pump.fun's token factory and bonding-curve market. Integrators ...14.4

Companies reaching this through an API (34)

These companies publish an API, specification or operation carrying “Smart Contracts” 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.

Aave Alchemix Altimate AI Balancer Band Protocol BanQu Berachain Blast Blockscout BNY Mellon Chainalysis Curve Finance EigenLayer Fireblocks Foundation Hegic Helium Network Hiro Hyperliquid Mantle Network Pendle Finance Polygon ID Pump.fun Push Protocol Raydium Scroll Sei Starknet Sudoswap SuperRare Tatum THORChain Vesper Finance XMTP

Score breakdown

Frequency
62.7
log-scaled weighted occurrences
Breadth
3.5
spread across providers
Quality lift
30.3
mean composite of providers using it
Cohesion
28.3
strength of nearest seed neighbor

Related tags

Ethereum 73 co-occurrences DeFi 81 co-occurrences Web3 106 co-occurrences Blockchain 127 co-occurrences EVM 31 co-occurrences JSON-RPC 30 co-occurrences NFT 27 co-occurrences Layer 1 13 co-occurrences

Where this tag comes from

Provider tag127
Api tag64
Openapi tag5
Openapi op tag27

Cohort brief

Auto-generated

The 122 providers in the APIs.io catalog tagged Smart Contracts, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
122
all scored
Mean Kin Score
26.9
+3.0 vs catalog 23.9
Mean Agent Readiness
12.5
+0.5 vs catalog 12
Spread
3.1–65.1
median 24 · σ 14.1
How the 122 split by band
Exemplar 0Strong 4Developing 26Thin 24Emerging 50Minimal 18
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 40.8 23.4 +17.4 122
Discoverability 65.4 61.2 +4.2 122
Operational Transparency 17.9 14 +3.9 122
Contract Quality 21.7 19.8 +1.9 122
Contract Governance 5.1 6.4 -1.3 122
Access Clarity 19 26.5 -7.5 122

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) 10% 10% 0
MCP server (first-party) 16% 13% +3
Agent Skills 0% 0% 0
OAuth scopes 2% 11% -9
Security 97% 97% 0
Arazzo workflows 0% 2% -2
Governance rules 16% 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. 1 Solidus Labs 65.1
  2. 2 OpenZeppelin 61.6
  3. 3 Aptos 58.8
  4. 4 0x 56.3
  5. 5 SIMBA Chain 52.3
  6. 6 Aeternity 50.5
  7. 7 Stellar 49.8
  8. 8 Supra 49.2
  9. 9 Linea 48.9
  10. 10 Algorand 48.8
Top by Agent Readiness
  1. 1 Art Blocks 41.3
  2. 2 SIMBA Chain 39.4
  3. 3 Hedera 37.8
  4. 4 Aeternity 37.4
  5. 5 Aelf 37.3
  6. 6 Gala Games 37
  7. 7 Seismic Systems 36.7
  8. 8 Supra 35.6
  9. 9 Nervos 34.9
  10. 10 Mysten Labs 34.5
All 127 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 15 September 2026, across 27661 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.

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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.
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