Aptos
Aptos is a Move-based Layer 1 blockchain platform that exposes a REST API for reading on-chain state and submitting transactions, a GraphQL Indexer API for high-level queries over processed blockchain data (NFTs, objects, custom Move contracts), and a gRPC Transaction Stream for real-time and historical event feeds. Public endpoints are provided by Aptos Labs for mainnet, testnet, and devnet; enhanced rate limits are available through Geomi (formerly Aptos Labs Developer Portal).
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Aptos the way a machine reads it — 246 machine-readable artifacts across 10 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Aptos scores 63.1/100 (strong), with a separate agent-readiness read of 39/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Aptos
Each block below is one kind of artifact we hold for Aptos. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 10
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Aptos Indexer GraphQL API
High-level GraphQL API backed by the Aptos Indexer, providing opinionated access to processed blockchain data. Optimized for querying NFTs, Aptos Objects, token balances, fungib...
Aptos Transaction Stream API
gRPC streaming API that delivers historical and real-time transaction data from the Aptos blockchain. Used to power the Aptos Core Indexer and to build custom app-specific real-...
Aptos Faucet API
Testnet and devnet faucet that distributes APT test tokens for development and testing. Available programmatically on devnet; testnet faucet is accessible via the mint page. Not...
Aptos Accounts API
Access to accounts, resources, and modules
Aptos Blocks API
Access to blocks
Aptos Events API
Access to events
Aptos General API
General information
Aptos Tables API
Access to tables
Aptos Transactions API
Access to transactions
Aptos View API
View functions,
Scroll within the panel for all 10 ·
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Aptos GraphQL API
The Aptos Indexer GraphQL API provides high-level access to processed Aptos blockchain data. Backed by a Hasura GraphQL engine over the Aptos Indexer database, it exposes querya...
GRAPHQLPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Aptos Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Aptos Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Aptos Finops
FINOPSFeatures 5
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Move-based smart contracts
Aptos uses the Move language for safe, resource-oriented smart contracts and on-chain modules.
REST and GraphQL APIs
Dual API surface — low-level REST for nodes and high-level GraphQL for indexed blockchain data.
gRPC transaction streaming
Real-time and historical transaction event feeds via gRPC for custom indexers and processors.
Multi-network support
Public mainnet, testnet, and devnet endpoints with consistent API surfaces across all three.
Usage-based API access via Geomi
Compute-unit metered access with $10-$100/month free credit; no locked tiers.
Semantic Vocabularies 2
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Aptos Context
JSON-LDAptos Schema Context
JSON-LDSpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Aptos API Rules
SPECTRALJSON Schema 188
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
AbstractSignature
JSON SCHEMAAccountData
JSON SCHEMAAccountSignature
JSON SCHEMAAccountSignature_AbstractSignature
JSON SCHEMAAccountSignature_Ed25519Signature
JSON SCHEMAAccountSignature_MultiEd25519Signature
JSON SCHEMAAccountSignature_MultiKeySignature
JSON SCHEMAAccountSignature_NoAccountSignature
JSON SCHEMAAccountSignature_SingleKeySignature
JSON SCHEMAAddress
JSON SCHEMAAptosError
JSON SCHEMAAptosErrorCode
JSON SCHEMAAssetType
JSON SCHEMABlock
JSON SCHEMABlockEndInfo
JSON SCHEMABlockEpilogueTransaction
JSON SCHEMABlockMetadataExtension
JSON SCHEMABlockMetadataExtensionEmpty
JSON SCHEMABlockMetadataExtensionRandomness
JSON SCHEMABlockMetadataExtensionRandomnessAndDecKey
JSON SCHEMABlockMetadataTransaction
JSON SCHEMAChunkyDKGResultTransaction
JSON SCHEMAClaimedEntryFunction
JSON SCHEMADKGResultTransaction
JSON SCHEMADecodedTableData
JSON SCHEMADecryptedPayload
JSON SCHEMADelegatedVoterLimitsRequest
JSON SCHEMADelegationPoolDelegatorLimitsRequest
JSON SCHEMADeleteModule
JSON SCHEMADeleteResource
JSON SCHEMADeleteTableItem
JSON SCHEMADeletedTableData
JSON SCHEMADeprecatedModuleBundlePayload
JSON SCHEMADirectWriteSet
JSON SCHEMAEd25519
JSON SCHEMAEd25519Signature
JSON SCHEMAEncodeSubmissionRequest
JSON SCHEMAEncryptedPayload
JSON SCHEMAEncryptedTransactionInnerPayload
JSON SCHEMAEncryptedTransactionPayload
JSON SCHEMAEncryptedTransactionPayload_DecryptedPayload
JSON SCHEMAEncryptedTransactionPayload_EncryptedPayload
JSON SCHEMAEntryFunctionId
JSON SCHEMAEntryFunctionPayload
JSON SCHEMAEvent
JSON SCHEMAEventGuid
JSON SCHEMAExportedAggregateSignature
JSON SCHEMAExportedDKGTranscript
JSON SCHEMAExportedProviderJWKs
JSON SCHEMAExportedQuorumCertifiedUpdate
JSON SCHEMAFailedDecryptionPayload
JSON SCHEMAFederatedKeyless
JSON SCHEMAFeePayerSignature
JSON SCHEMAGasEstimation
JSON SCHEMAGenesisPayload
JSON SCHEMAGenesisPayload_WriteSetPayload
JSON SCHEMAGenesisTransaction
JSON SCHEMAHashValue
JSON SCHEMAHealthCheckSuccess
JSON SCHEMAHexEncodedBytes
JSON SCHEMAI128
JSON SCHEMAI256
JSON SCHEMAI64
JSON SCHEMAIdentifierWrapper
JSON SCHEMAIndexResponse
JSON SCHEMAIndexedSignature
JSON SCHEMAJWK
JSON SCHEMAJWKUpdateTransaction
JSON SCHEMAKeyless
JSON SCHEMAMoveAbility
JSON SCHEMAMoveFunction
JSON SCHEMAMoveFunctionGenericTypeParam
JSON SCHEMAMoveFunctionVisibility
JSON SCHEMAMoveModule
JSON SCHEMAMoveModuleBytecode
JSON SCHEMAMoveModuleId
JSON SCHEMAMoveResource
JSON SCHEMAMoveScriptBytecode
JSON SCHEMAMoveStruct
JSON SCHEMAMoveStructField
JSON SCHEMAMoveStructGenericTypeParam
JSON SCHEMAMoveStructTag
JSON SCHEMAMoveStructValue
JSON SCHEMAMoveStructVariant
JSON SCHEMAMoveType
JSON SCHEMAMoveValue
JSON SCHEMAMultiAgentSignature
JSON SCHEMAMultiEd25519Signature
JSON SCHEMAMultiKeySignature
JSON SCHEMAMultisigPayload
JSON SCHEMAMultisigTransactionPayload
JSON SCHEMAMultisigTransactionPayload_ScriptPayload
JSON SCHEMANoAccountSignature
JSON SCHEMAPendingTransaction
JSON SCHEMAPersistedAuxiliaryInfo
JSON SCHEMAPublicKey
JSON SCHEMAPublicKey_Ed25519
JSON SCHEMAPublicKey_FederatedKeyless
JSON SCHEMAPublicKey_Keyless
JSON SCHEMAPublicKey_Secp256k1Ecdsa
JSON SCHEMAPublicKey_Secp256r1Ecdsa
JSON SCHEMAPublicKey_SlhDsa_Sha2_128s
JSON SCHEMARSA_JWK
JSON SCHEMARawTableItemRequest
JSON SCHEMAReplayProtector
JSON SCHEMAReplayProtector_string(U64)
JSON SCHEMARequestedMultipliers
JSON SCHEMARoleType
JSON SCHEMAScriptPayload
JSON SCHEMAScriptWriteSet
JSON SCHEMASecp256k1Ecdsa
JSON SCHEMASecp256r1Ecdsa
JSON SCHEMASignature
JSON SCHEMASignature_Ed25519
JSON SCHEMASignature_Keyless
JSON SCHEMASignature_Secp256k1Ecdsa
JSON SCHEMASignature_SlhDsa_Sha2_128s
JSON SCHEMASignature_WebAuthn
JSON SCHEMASingleKeySignature
JSON SCHEMASlhDsa_Sha2_128s
JSON SCHEMAStakePoolOwnerLimitsRequest
JSON SCHEMAStateCheckpointTransaction
JSON SCHEMAStateKeyWrapper
JSON SCHEMASubmitTransactionRequest
JSON SCHEMATableItemRequest
JSON SCHEMATransaction
JSON SCHEMATransactionPayload
JSON SCHEMATransactionPayload_EntryFunctionPayload
JSON SCHEMATransactionPayload_MultisigPayload
JSON SCHEMATransactionPayload_ScriptPayload
JSON SCHEMATransactionSignature
JSON SCHEMATransactionSignature_AccountSignature
JSON SCHEMATransactionSignature_Ed25519Signature
JSON SCHEMATransactionSignature_FeePayerSignature
JSON SCHEMATransactionSignature_MultiAgentSignature
JSON SCHEMATransactionSignature_MultiEd25519Signature
JSON SCHEMATransactionSignature_NoAccountSignature
JSON SCHEMATransactionSummary
JSON SCHEMATransaction_BlockEpilogueTransaction
JSON SCHEMATransaction_BlockMetadataTransaction
JSON SCHEMATransaction_GenesisTransaction
JSON SCHEMATransaction_PendingTransaction
JSON SCHEMATransaction_StateCheckpointTransaction
JSON SCHEMATransaction_UserTransaction
JSON SCHEMATransaction_ValidatorTransaction
JSON SCHEMATransactionsBatchSingleSubmissionFailure
JSON SCHEMATransactionsBatchSubmissionResult
JSON SCHEMAU128
JSON SCHEMAU256
JSON SCHEMAU64
JSON SCHEMAUnsupportedJWK
JSON SCHEMAUserTransaction
JSON SCHEMAUserTxnLimitsRequest
JSON SCHEMAValidatorTransaction
JSON SCHEMAValidatorTransaction_DKGResultTransaction
JSON SCHEMAValidatorTransaction_JWKUpdateTransaction
JSON SCHEMAVersionedEvent
JSON SCHEMAViewRequest
JSON SCHEMAWebAuthn
JSON SCHEMAWriteModule
JSON SCHEMAWriteResource
JSON SCHEMAWriteSet
JSON SCHEMAWriteSetChange
JSON SCHEMAWriteSetChange_DeleteModule
JSON SCHEMAWriteSetChange_DeleteResource
JSON SCHEMAWriteSetChange_DeleteTableItem
JSON SCHEMAWriteSetChange_WriteModule
JSON SCHEMAWriteSetChange_WriteResource
JSON SCHEMAWriteSetChange_WriteTableItem
JSON SCHEMAWriteSetPayload
JSON SCHEMAWriteSet_DirectWriteSet
JSON SCHEMAWriteSet_ScriptWriteSet
JSON SCHEMAWriteTableItem
JSON SCHEMAScroll within the panel for all 188 ·
Examples 29
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Encode_Submission
EXAMPLEEstimate_Gas_Price
EXAMPLEGet_Account
EXAMPLEGet_Account_Balance
EXAMPLEGet_Account_Module
EXAMPLEGet_Account_Modules
EXAMPLEGet_Account_Resource
EXAMPLEGet_Account_Resources
EXAMPLEGet_Account_Transactions
EXAMPLEGet_Block_By_Height
EXAMPLEGet_Block_By_Version
EXAMPLEGet_Events_By_Event_Handle
EXAMPLEGet_Ledger_Info
EXAMPLEGet_Raw_Table_Item
EXAMPLEGet_Table_Item
EXAMPLEGet_Transaction_By_Hash
EXAMPLEGet_Transaction_By_Version
EXAMPLEGet_Transactions
EXAMPLEHealthy
EXAMPLEInfo
EXAMPLESimulate_Transaction
EXAMPLESpec
EXAMPLESubmit_Batch_Transactions
EXAMPLESubmit_Transaction
EXAMPLEView
EXAMPLEWait_Transaction_By_Hash
EXAMPLEScroll within the panel for all 29 ·
Security Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 5
What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.
What developers build with this provider.
DeFi protocol development
Query account balances, fungible asset positions, and submit swap/liquidity transactions on-chain.
NFT marketplace integration
Use the Indexer GraphQL API to surface token collections, ownership history, and transfer events.
Custom blockchain indexers
Subscribe to the Transaction Stream gRPC feed to build application-specific event processors.
Wallet and portfolio apps
Fetch account resources, module states, and transaction history via the Fullnode REST API.
Testing and prototyping
Use testnet and devnet endpoints with faucet funding before deploying to mainnet.
Resources
Every other property we hold for Aptos — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API
Other 1
Properties that don't map to a standard resource type
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