Neynar · Schema

Hub MessageType

Type of the MessageBody. - MESSAGE_TYPE_CAST_ADD: Add a new Cast - MESSAGE_TYPE_CAST_REMOVE: Remove an existing Cast - MESSAGE_TYPE_REACTION_ADD: Add a Reaction to a Cast - MESSAGE_TYPE_REACTION_REMOVE: Remove a Reaction from a Cast - MESSAGE_TYPE_LINK_ADD: Add a new Link - MESSAGE_TYPE_LINK_REMOVE: Remove an existing Link - MESSAGE_TYPE_VERIFICATION_ADD_ETH_ADDRESS: Add a Verification of an Ethereum Address - MESSAGE_TYPE_VERIFICATION_REMOVE: Remove a Verification - MESSAGE_TYPE_USER_DATA_ADD: Add metadata about a user - MESSAGE_TYPE_USERNAME_PROOF: Add or replace a username proof - MESSAGE_TYPE_FRAME_ACTION: A Farcaster Frame action

FarcasterSocialDecentralizedWeb3BlockchainSocial GraphCastsChannelsFeedsReactionsNotificationWebhookOnchain
View JSON Schema on GitHub

JSON Schema

hub-messagetype.json Raw ↑
{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://neynar.com/schemas/hub/MessageType",
  "title": "Hub MessageType",
  "description": "Type of the MessageBody.\n- MESSAGE_TYPE_CAST_ADD: Add a new Cast\n- MESSAGE_TYPE_CAST_REMOVE: Remove an existing Cast\n- MESSAGE_TYPE_REACTION_ADD: Add a Reaction to a Cast\n- MESSAGE_TYPE_REACTION_REMOVE: Remove a Reaction from a Cast\n- MESSAGE_TYPE_LINK_ADD: Add a new Link\n- MESSAGE_TYPE_LINK_REMOVE: Remove an existing Link\n- MESSAGE_TYPE_VERIFICATION_ADD_ETH_ADDRESS: Add a Verification of an Ethereum Address\n- MESSAGE_TYPE_VERIFICATION_REMOVE: Remove a Verification\n- MESSAGE_TYPE_USER_DATA_ADD: Add metadata about a user\n- MESSAGE_TYPE_USERNAME_PROOF: Add or replace a username proof\n- MESSAGE_TYPE_FRAME_ACTION: A Farcaster Frame action",
  "type": "string",
  "default": "MESSAGE_TYPE_CAST_ADD",
  "enum": [
    "MESSAGE_TYPE_CAST_ADD",
    "MESSAGE_TYPE_CAST_REMOVE",
    "MESSAGE_TYPE_REACTION_ADD",
    "MESSAGE_TYPE_REACTION_REMOVE",
    "MESSAGE_TYPE_LINK_ADD",
    "MESSAGE_TYPE_LINK_REMOVE",
    "MESSAGE_TYPE_VERIFICATION_ADD_ETH_ADDRESS",
    "MESSAGE_TYPE_VERIFICATION_REMOVE",
    "MESSAGE_TYPE_USER_DATA_ADD",
    "MESSAGE_TYPE_USERNAME_PROOF",
    "MESSAGE_TYPE_FRAME_ACTION"
  ]
}

Work with this as data

Every JSON Schema 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 schemas

4 MCP tools reach this
  • find_json_schemasBrowse and filter every JSON Schema in the catalog.
  • 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 JSON Schema
curl "https://apis.io/api/v1/json-schemas/hub-messagetype"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"

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.

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