Neynar
Neynar is the complete Farcaster developer platform providing infrastructure REST APIs for querying casts, channels, user profiles, feeds, reactions, and building applications on the Farcaster decentralized social protocol. As of January 2026, Neynar acquired Farcaster from Merkle Manufactures, taking operational responsibility for the protocol, client, and related infrastructure.
Neynar publishes 39 APIs on the APIs.io network, including Action API, Agents API, App Host API, and 36 more. Tagged areas include Farcaster, Social, Decentralized, Web3, and Blockchain.
The Neynar catalog on APIs.io includes 9 JSON-LD contexts and 1 Spectral governance ruleset.
Neynar’s developer surface includes authentication, engineering blog, and 2 more developer resources.
Kin Score
APIs 39
Individual APIs this provider publishes, each with its own machine-readable definition.
Neynar Action API
Securely communicate and perform actions on behalf of users across different apps
Neynar Agents API
Operations for building AI agents
Neynar App Host API
Operations related to mini app host notifications
Neynar AuthAddress API
The AuthAddress API from Neynar — 2 operation(s) for authaddress.
Neynar Ban API
Operations related to a ban
Neynar Block API
Operations related to a block
Neynar Cast API
Operations related to cast
Neynar Casts API
Operations related to casts.
Neynar Channel API
Operations related to channels
Neynar Feed API
Operations related to feed
Neynar Fids API
Operations related to FIDs.
Neynar fname API
Operations related to fname
Neynar Follows API
Operations related to follows
Neynar Frame API
Operations related to mini apps
Neynar HubEvents API
Operations related to hub events.
Neynar Info API
Operations related to hub information.
Neynar Links API
Operations related to links.
Neynar Login API
Operations related to login
Neynar Message API
Operations related to messages.
Neynar Metrics API
Operations related to retrieving metrics
Neynar Mute API
Operations related to a mute
Neynar Notifications API
Operations related to notifications
Neynar Onchain API
Operations related to onchain data
Neynar OnChainEvents API
Operations related to on-chain events.
Neynar organization API
The organization API from Neynar — 1 operation(s) for organization.
Neynar portal API
The portal API from Neynar — 3 operation(s) for portal.
Neynar Reaction API
Operations related to reaction
Neynar Reactions API
Operations related to reactions.
Neynar Signer API
Operations related to signer
Neynar Storage API
Operations related to storage
Neynar studio API
The studio API from Neynar — 32 operation(s) for studio.
Neynar Subscribers API
Operations related to a subscriptions
Neynar subscription API
The subscription API from Neynar — 2 operation(s) for subscription.
Neynar Topic API
The Topic API from Neynar — 1 operation(s) for topic.
Neynar User API
Operations related to user
Neynar UserData API
Operations related to user data.
Neynar Usernames API
Operations related to usernames.
Neynar Verifications API
Operations related to verifications.
Neynar Webhook API
Operations related to a webhook
Scroll for all 39
GraphQL 1
GraphQL schemas published by this provider.
Neynar GraphQL Schema
Neynar is the leading Farcaster API provider and, as of January 2026, the operational owner of the Farcaster protocol. Neynar exposes its developer platform as a REST API (OpenA...
GRAPHQLPricing Plans 1
Published pricing tiers and plan structures.
Plans
PLANSRate Limits 1
Documented rate limits and quota policies.
Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Finops
FINOPSSemantic Vocabularies 9
JSON-LD contexts and semantic vocabularies used across these APIs.
Cast Context
JSON-LDChannel Context
JSON-LDcontext Context
JSON-LDFrame Context
JSON-LDHub Context
JSON-LDNotification Context
JSON-LDSigner Context
JSON-LDUser Context
JSON-LDWebhook Context
JSON-LDScroll for all 9
Spectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Neynar API Rules
SPECTRALJSON Schema 299
Standalone JSON Schema definitions for this provider's data models.
AddressBalance
JSON SCHEMAAddVerificationReqBody
JSON SCHEMAAppHostGetEventResponse
JSON SCHEMAAppHostPostEventReqBody
JSON SCHEMAAppHostPostEventResponse
JSON SCHEMAAppHostUserStateResponse
JSON SCHEMAAuthorizationUrlResponse
JSON SCHEMABalanceResponse
JSON SCHEMABanListResponse
JSON SCHEMABanRecord
JSON SCHEMABanReqBody
JSON SCHEMABanResponse
JSON SCHEMABestFriendsResponse
JSON SCHEMABlockListResponse
JSON SCHEMABlockRecord
JSON SCHEMABlockReqBody
JSON SCHEMABulkCastsResponse
JSON SCHEMABulkFollowResponse
JSON SCHEMABulkRelevantFungibleOwnersResponse
JSON SCHEMABulkUsersByAddressResponse
JSON SCHEMABulkUsersResponse
JSON SCHEMABuyStorageReqBody
JSON SCHEMACast
JSON SCHEMACastAndConversations
JSON SCHEMACastAndConversationsRef
JSON SCHEMACastDehydrated
JSON SCHEMACastEmbedCrawlResponse
JSON SCHEMACastEmbedded
JSON SCHEMACastId
JSON SCHEMACastNotificationType
JSON SCHEMACastParent
JSON SCHEMACastReactions
JSON SCHEMACastReplies
JSON SCHEMACastResponse
JSON SCHEMACastsMetrics
JSON SCHEMACastsMetricsResponse
JSON SCHEMACastsResponse
JSON SCHEMACastsSearchResponse
JSON SCHEMACastViewerContext
JSON SCHEMAChannel
JSON SCHEMAChannelActivity
JSON SCHEMAChannelDehydrated
JSON SCHEMAChannelFollowReqBody
JSON SCHEMAChannelId
JSON SCHEMAChannelListResponse
JSON SCHEMAChannelMember
JSON SCHEMAChannelMemberInvite
JSON SCHEMAChannelMemberInviteListResponse
JSON SCHEMAChannelMemberListResponse
JSON SCHEMAChannelMemberRole
JSON SCHEMAChannelOrChannelDehydrated
JSON SCHEMAChannelResponse
JSON SCHEMAChannelResponseBulk
JSON SCHEMAChannelSearchResponse
JSON SCHEMAChannelUserContext
JSON SCHEMAConflictErrorRes
JSON SCHEMAConversation
JSON SCHEMAConversationSummary
JSON SCHEMADeleteCastReqBody
JSON SCHEMADeployFungibleReqBody
JSON SCHEMADeployFungibleResponse
JSON SCHEMADeveloperManagedSigner
JSON SCHEMAEd25519PublicKey
JSON SCHEMAEmbed
JSON SCHEMAEmbedCast
JSON SCHEMAEmbedCastDeep
JSON SCHEMAEmbedDeep
JSON SCHEMAEmbedUrl
JSON SCHEMAEmbedUrlMetadata
JSON SCHEMAEncodedJsonFarcasterSignature
JSON SCHEMAErrorRes
JSON SCHEMAEthAddress
JSON SCHEMAFarcasterActionReqBody
JSON SCHEMAFarcasterFungible
JSON SCHEMAFarcasterManifest
JSON SCHEMAFeedResponse
JSON SCHEMAFid
JSON SCHEMAFnameAvailabilityResponse
JSON SCHEMAFollower
JSON SCHEMAFollowerDehydrated
JSON SCHEMAFollowersResponse
JSON SCHEMAFollowReqBody
JSON SCHEMAFollowResponse
JSON SCHEMAFrame
JSON SCHEMAFrameActionButton
JSON SCHEMAFrameButtonActionType
JSON SCHEMAFrameCatalogResponse
JSON SCHEMAFrameNotificationTokens
JSON SCHEMAFramePayTransactionReqBody
JSON SCHEMAFrameV1
JSON SCHEMAFrameV2
JSON SCHEMAFrameV2WithFullAuthor
JSON SCHEMAFungible
JSON SCHEMAFungibleBalance
JSON SCHEMAFungiblesResponseSchema
JSON SCHEMAHtmlMetadata
JSON SCHEMAHub CastAdd
JSON SCHEMAHub CastAddBody
JSON SCHEMAHub CastEmbed
JSON SCHEMAHub CastHash
JSON SCHEMAHub CastId
JSON SCHEMAHub DbStats
JSON SCHEMAHub Embed
JSON SCHEMAHub ErrorResponse
JSON SCHEMAHub FarcasterNetwork
JSON SCHEMAHub FidSchema
JSON SCHEMAHub FidsResponse
JSON SCHEMAHub FrameActionBody
JSON SCHEMAHub HashScheme
JSON SCHEMAHub HubEvent
JSON SCHEMAHub HubEventMergeMessage
JSON SCHEMAHub HubEventMergeOnChainEvent
JSON SCHEMAHub HubEventMergeUsernameProof
JSON SCHEMAHub HubEventPruneMessage
JSON SCHEMAHub HubEventRevokeMessage
JSON SCHEMAResponse Types for the Sync RPC Methods
JSON SCHEMAHub IdRegisterEventBody
JSON SCHEMAHub IdRegisterEventType
JSON SCHEMAHub LinkAdd
JSON SCHEMAHub LinkBody
JSON SCHEMAHub LinkType
JSON SCHEMAHub MergeMessageBody
JSON SCHEMAHub MergeOnChainEventBody
JSON SCHEMAHub MergeUserNameProofBody
JSON SCHEMAHub Message
JSON SCHEMAHub MessageCommon
JSON SCHEMAHub MessageDataCastAdd
JSON SCHEMAHub MessageDataCastRemove
JSON SCHEMAHub MessageDataCommon
JSON SCHEMAHub MessageDataFrameAction
JSON SCHEMAHub MessageDataLink
JSON SCHEMAHub MessageDataReaction
JSON SCHEMAHub MessageDataUserDataAdd
JSON SCHEMAHub MessageDataUsernameProof
JSON SCHEMAHub MessageDataVerificationAdd
JSON SCHEMAHub MessageDataVerificationRemove
JSON SCHEMAHub MessageType
JSON SCHEMAHub OnChainEvent
JSON SCHEMAHub OnChainEventCommon
JSON SCHEMAHub OnChainEventIdRegister
JSON SCHEMAHub OnChainEventSigner
JSON SCHEMAHub OnChainEventSignerMigrated
JSON SCHEMAHub OnChainEventStorageRent
JSON SCHEMAHub OnChainEventType
JSON SCHEMAHub PaginationResponse
JSON SCHEMAHub PruneMessageBody
JSON SCHEMAHub Reaction
JSON SCHEMAHub ReactionBody
JSON SCHEMAHub ReactionType
JSON SCHEMAHub RevokeMessageBody
JSON SCHEMAHub SignatureScheme
JSON SCHEMAHub SignerEventBody
JSON SCHEMAHub SignerEventType
JSON SCHEMAHub SignerMigratedEventBody
JSON SCHEMAHub StorageLimit
JSON SCHEMAHub StorageLimitsResponse
JSON SCHEMAHub StorageRentEventBody
JSON SCHEMAHub StoreType
JSON SCHEMAHub UrlEmbed
JSON SCHEMAHub UserDataAdd
JSON SCHEMAHub UserDataBody
JSON SCHEMAHub UserDataType
JSON SCHEMAHub UserNameProof
JSON SCHEMAHub UsernameProofsResponse
JSON SCHEMAHub UserNameType
JSON SCHEMAHub ValidateMessageResponse
JSON SCHEMAHub Verification
JSON SCHEMAHub VerificationAddEthAddressBody
JSON SCHEMAHub VerificationRemoveBody
JSON SCHEMAIdem
JSON SCHEMAImageObject
JSON SCHEMAInviteChannelMemberReqBody
JSON SCHEMALocation
JSON SCHEMALocationAddress
JSON SCHEMAMarkNotificationsAsSeenReqBody
JSON SCHEMAMiniappDomainResponse
JSON SCHEMAMuteListResponse
JSON SCHEMAMuteRecord
JSON SCHEMAMuteReqBody
JSON SCHEMAMuteResponse
JSON SCHEMANetwork
JSON SCHEMANextCursor
JSON SCHEMANonceResponse
JSON SCHEMANotification
JSON SCHEMANotificationCampaign
JSON SCHEMANotificationCampaignStats
JSON SCHEMANotificationCampaignStatus
JSON SCHEMANotificationsResponse
JSON SCHEMANotificationType
JSON SCHEMAOembedLinkData
JSON SCHEMAOembedPhotoData
JSON SCHEMAOembedRichData
JSON SCHEMAOembedVideoData
JSON SCHEMAOperationResponse
JSON SCHEMAPostCastReqBody
JSON SCHEMAPostCastReqBodyEmbeds
JSON SCHEMAPostCastReqBodyEmbedsCastIdProperties
JSON SCHEMAPostCastResponse
JSON SCHEMAPrefixedHexString
JSON SCHEMAProtocol
JSON SCHEMAPublishMessageReqBody
JSON SCHEMAPublishMessageResponse
JSON SCHEMAQueuedFrameNotificationsResponse
JSON SCHEMAReactionForCast
JSON SCHEMAReactionLike
JSON SCHEMAReactionRecast
JSON SCHEMAReactionReqBody
JSON SCHEMAReactionsCastResponse
JSON SCHEMAReactionsResponse
JSON SCHEMAReactionType
JSON SCHEMAReactionWithCastInfo
JSON SCHEMAReactionWithUserInfo
JSON SCHEMAReciprocalFollower
JSON SCHEMARegisterDeveloperManagedSignedKeyReqBody
JSON SCHEMARegisterSignerKeyReqBody
JSON SCHEMARegisterUserOnChainReqBody
JSON SCHEMARegisterUserOnChainResponse
JSON SCHEMARegisterUserReqBody
JSON SCHEMARegisterUserResponse
JSON SCHEMARelevantFollowersResponse
JSON SCHEMARelevantFungibleOwnersResponse
JSON SCHEMARemoveChannelMemberReqBody
JSON SCHEMARemoveVerificationReqBody
JSON SCHEMARespondChannelInviteReqBody
JSON SCHEMASendFrameNotificationsReqBody
JSON SCHEMASendFrameNotificationsResponse
JSON SCHEMASharedSignerPermission
JSON SCHEMASignedKeyRequestSponsor
JSON SCHEMASignedMessageBody
JSON SCHEMASigner
JSON SCHEMASignerListResponse
JSON SCHEMASignerUUID
JSON SCHEMASignerUuidBody
JSON SCHEMASimulateNftMintResponse
JSON SCHEMASolAddress
JSON SCHEMAStorageAllocation
JSON SCHEMAStorageAllocationsResponse
JSON SCHEMAStorageObject
JSON SCHEMAStorageUsageResponse
JSON SCHEMASubscribedTo
JSON SCHEMASubscribedToObject
JSON SCHEMASubscribedToResponse
JSON SCHEMASubscriber
JSON SCHEMASubscribersResponse
JSON SCHEMASubscription
JSON SCHEMASubscriptionCheckResponse
JSON SCHEMASubscriptions
JSON SCHEMASubscriptionsResponse
JSON SCHEMASubscriptionTier
JSON SCHEMATextRange
JSON SCHEMATokenBalance
JSON SCHEMATopLevelTopic
JSON SCHEMATransactionFrame
JSON SCHEMATransactionFrameAction
JSON SCHEMATransactionFrameConfig
JSON SCHEMATransactionFrameDestination
JSON SCHEMATransactionFrameLineItem
JSON SCHEMATransactionFramePay
JSON SCHEMATransactionFrameResponse
JSON SCHEMATransactionFrameStatus
JSON SCHEMATransactionFrameType
JSON SCHEMATransactionSendFungiblesReceipt
JSON SCHEMATransactionSendFungiblesRecipient
JSON SCHEMATransactionSendFungiblesReqBody
JSON SCHEMATransactionSendFungiblesResponse
JSON SCHEMATransactionSendTxInfo
JSON SCHEMATrendingChannelResponse
JSON SCHEMATrendingTopic
JSON SCHEMATrendingTopicsResponse
JSON SCHEMAUpdateUserReqBody
JSON SCHEMAUser
JSON SCHEMAUserDehydrated
JSON SCHEMAUserFIDResponse
JSON SCHEMAUserPowerLiteResponse
JSON SCHEMAUserResponse
JSON SCHEMAUsersActiveChannelsResponse
JSON SCHEMAUserSearchResponse
JSON SCHEMAUsersResponse
JSON SCHEMAUserViewerContext
JSON SCHEMAVerification
JSON SCHEMAVerificationChainId
JSON SCHEMAVerificationType
JSON SCHEMAVideoObject
JSON SCHEMAWebhook
JSON SCHEMAWebhookDeleteReqBody
JSON SCHEMAWebhookListResponse
JSON SCHEMAWebhookPatchReqBody
JSON SCHEMAWebhookPostReqBody
JSON SCHEMAWebhookPutReqBody
JSON SCHEMAWebhookResponse
JSON SCHEMAWebhookSecret
JSON SCHEMAWebhookSubscription
JSON SCHEMAWebhookSubscriptionFilters
JSON SCHEMAWebhookSubscriptionFiltersCast
JSON SCHEMAWebhookSubscriptionFiltersFollow
JSON SCHEMAWebhookSubscriptionFiltersReaction
JSON SCHEMAWebhookSubscriptionFiltersTrade
JSON SCHEMAZodError
JSON SCHEMAScroll for all 299
Examples 200
Example request and response payloads for these APIs.
App Host Get Event
EXAMPLEApp Host Get User State
EXAMPLEApp Host Post Event
EXAMPLEAssign Custom Domain
EXAMPLEAssociate Deployment
EXAMPLEBatch Get Token Metadata
EXAMPLEBilling
EXAMPLEBuild
EXAMPLEBuy Storage
EXAMPLECancel Session
EXAMPLECheck Domain Availability
EXAMPLEClaim Credit Drop
EXAMPLECreate Deployment
EXAMPLECreate Signer
EXAMPLECreate Transaction Pay Frame
EXAMPLECreate X402 Signature
EXAMPLECreate X402 Siwx
EXAMPLEDelete Bans
EXAMPLEDelete Block
EXAMPLEDelete Cast
EXAMPLEDelete Deployment
EXAMPLEDelete Mute
EXAMPLEDelete Reaction
EXAMPLEDelete Rows
EXAMPLEDelete Secrets
EXAMPLEDelete Verification
EXAMPLEDelete Webhook
EXAMPLEDeploy Erc721
EXAMPLEDeploy Fungible
EXAMPLEDeploy To Vercel
EXAMPLEExecute Sql
EXAMPLEExport Zip
EXAMPLEFetch All Channels
EXAMPLEFetch All Notifications
EXAMPLEFetch Authorization Url
EXAMPLEFetch Ban List
EXAMPLEFetch Block List
EXAMPLEFetch Bulk Casts
EXAMPLEFetch Bulk Channels
EXAMPLEFetch Bulk Users
EXAMPLEFetch Cast Metrics
EXAMPLEFetch Cast Quotes
EXAMPLEFetch Cast Reactions
EXAMPLEFetch Casts For User
EXAMPLEFetch Channel Invites
EXAMPLEFetch Channel Members
EXAMPLEFetch Embedded Url Metadata
EXAMPLEFetch Feed By Channel Ids
EXAMPLEFetch Feed By Parent Urls
EXAMPLEFetch Feed By Topic
EXAMPLEFetch Feed For You
EXAMPLEFetch Feed
EXAMPLEFetch Follow Suggestions
EXAMPLEFetch Frame Catalog
EXAMPLEFetch Fungible Trades
EXAMPLEFetch Fungibles
EXAMPLEFetch Mute List
EXAMPLEFetch Nonce
EXAMPLEFetch Notification Tokens
EXAMPLEFetch Popular Casts By User
EXAMPLEFetch Relevant Followers
EXAMPLEFetch Relevant Frames
EXAMPLEFetch Signers
EXAMPLEFetch Subscribed To For Fid
EXAMPLEFetch Subscribers For Fid
EXAMPLEFetch Subscription Check
EXAMPLEFetch Subscriptions For Fid
EXAMPLEFetch Trending Channels
EXAMPLEFetch Trending Feed
EXAMPLEFetch Trending Fungibles
EXAMPLEFetch User Balance
EXAMPLEFetch User Channels
EXAMPLEFetch User Followers
EXAMPLEFetch User Following Feed
EXAMPLEFetch User Following
EXAMPLEFetch User Interactions
EXAMPLEFetch User Reactions
EXAMPLEFetch Users Active Channels
EXAMPLEFetch Users By Location
EXAMPLEFetch Verifications
EXAMPLEFetch Webhooks
EXAMPLEFollow Channel
EXAMPLEFollow User
EXAMPLEGenerate Image
EXAMPLEGet Account Association
EXAMPLEGet Conversation Messages
EXAMPLEGet Credit Drop
EXAMPLEGet Deployment File
EXAMPLEGet Deployment
EXAMPLEGet Dev Status
EXAMPLEGet Fresh Account Fid
EXAMPLEGet Table Schema
EXAMPLEGet Token Metadata
EXAMPLEGet Transaction Pay Frame
EXAMPLEGet User Best Friends
EXAMPLEGet Wallet Balances
EXAMPLEHub Fetch Cast Reactions
EXAMPLEHub Fetch Casts By Parent
EXAMPLEHub Fetch Events
EXAMPLEHub Fetch Fids
EXAMPLEHub Fetch User Data
EXAMPLEHub Fetch User Followers
EXAMPLEHub Fetch User Following
EXAMPLEHub Fetch User Reactions
EXAMPLEHub Fetch Users Casts
EXAMPLEHub Lookup Event
EXAMPLEHub Lookup Hub Info
EXAMPLEHub Lookup Reaction By Id
EXAMPLEHub Lookup User Relation
EXAMPLEHub Publish Message
EXAMPLEHub Validate Message
EXAMPLEInsert Rows
EXAMPLEInvite Channel Member
EXAMPLEIs Fname Available
EXAMPLEList Conversations
EXAMPLEList Deployment Files
EXAMPLEList Deployments
EXAMPLEList Secrets
EXAMPLEList Tables
EXAMPLEList Trending Topics
EXAMPLELookup Cast By Hash Or Url
EXAMPLELookup Cast Conversation
EXAMPLELookup Channel
EXAMPLELookup Signer
EXAMPLELookup User By Username
EXAMPLELookup User Storage Usage
EXAMPLELookup Users By X Username
EXAMPLELookup Webhook
EXAMPLEMark Notifications As Seen
EXAMPLEMint Nft
EXAMPLEPrompt Deployment Stream
EXAMPLEProvision
EXAMPLEPublish Bans
EXAMPLEPublish Block
EXAMPLEPublish Cast
EXAMPLEPublish Farcaster Action
EXAMPLEPublish Frame Notifications
EXAMPLEPublish Message To Farcaster
EXAMPLEPublish Mute
EXAMPLEPublish Reaction
EXAMPLEPublish Verification
EXAMPLEPublish Webhook
EXAMPLEQuery Table
EXAMPLERecover
EXAMPLERegister Account Onchain
EXAMPLERegister Account
EXAMPLERegister Signed Key
EXAMPLERemove Channel Member
EXAMPLEReport Studio Usage
EXAMPLERespond Channel Invite
EXAMPLESearch Casts
EXAMPLESearch Channels
EXAMPLESearch Frames
EXAMPLESearch User
EXAMPLESend Fungibles To Users
EXAMPLESimulate Nft Mint
EXAMPLEStart App
EXAMPLEStop App
EXAMPLEUnfollow Channel
EXAMPLEUnfollow User
EXAMPLEUpdate Rows
EXAMPLEUpdate User
EXAMPLEUpdate Webhook Active Status
EXAMPLEUpdate Webhook
EXAMPLEUpgrade Preview
EXAMPLEUpgrade
EXAMPLEUpload Image Url
EXAMPLEUpload Image
EXAMPLEUpload Token Metadata
EXAMPLEUpsert Secrets
EXAMPLEVercel Deployment Logs
EXAMPLEVercel Deployment Status
EXAMPLEScroll for all 200
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Access & Security 2
Authentication, authorization, and security posture
Company 1
The organization behind the API