aid: respond
url: https://raw.githubusercontent.com/api-evangelist/respond/refs/heads/main/apis.yml
name: Respond.io
kind: company
description: Respond.io is an AI-powered customer-conversation management platform that
  unifies omnichannel messaging - WhatsApp, Messenger, Instagram, Telegram, SMS, email,
  and website chat - into a single inbox. Its REST Developer API lets businesses manage
  contacts, send and read messages across channels, manage conversations, post comments,
  apply tags and custom fields, and subscribe to webhooks.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Messaging
- Omnichannel
- Customer Conversations
- WhatsApp
- AI
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: respond:contacts
  name: Respond.io Contacts API
  tags:
  - Contacts
  - CRM
  - Identity
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.respond.io/docs/api/c6e1aa937640e-contact
  baseURL: https://api.respond.io/v2
  properties:
  - url: https://developers.respond.io/
    type: Documentation
  - url: https://developers.respond.io/docs/api/c6e1aa937640e-contact
    type: APIReference
  - url: openapi/respond-openapi.yml
    type: OpenAPI
  - url: collections/respond.postman_collection.json
    type: PostmanCollection
  description: Access, create, update, merge, list, and delete contacts. Contacts are
    addressed by an identifier of the form id:{id}, email:{email}, or phone:{phone},
    with support for tags, custom fields, lifecycle, and channel listing.
- aid: respond:messages
  name: Respond.io Messages API
  tags:
  - Messages
  - Send
  - Omnichannel
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.respond.io/docs/api/a748f5bfb1bb5-send-a-message
  baseURL: https://api.respond.io/v2
  properties:
  - url: https://developers.respond.io/
    type: Documentation
  - url: https://developers.respond.io/docs/api/42fc125b57906-messaging
    type: APIReference
  - url: openapi/respond-openapi.yml
    type: OpenAPI
  - url: collections/respond.postman_collection.json
    type: PostmanCollection
  description: Send messages to a contact across any connected channel (text, attachment,
    quick replies, WhatsApp template, email) and read individual messages or list a
    contact's message history. Routes to the last interacted channel when channelId is
    omitted.
- aid: respond:conversations
  name: Respond.io Conversations API
  tags:
  - Conversations
  - Inbox
  - Assignment
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.respond.io/docs/api/fd927d6437cf5-conversation
  baseURL: https://api.respond.io/v2
  properties:
  - url: https://developers.respond.io/
    type: Documentation
  - url: https://developers.respond.io/docs/api/fd927d6437cf5-conversation
    type: APIReference
  - url: openapi/respond-openapi.yml
    type: OpenAPI
  - url: collections/respond.postman_collection.json
    type: PostmanCollection
  description: Open and close conversations for a contact, set conversation status, and
    assign or unassign users (human agents or AI agents) to the conversation.
- aid: respond:comments
  name: Respond.io Comments API
  tags:
  - Comments
  - Internal Notes
  - Collaboration
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.respond.io/
  baseURL: https://api.respond.io/v2
  properties:
  - url: https://developers.respond.io/
    type: Documentation
  - url: openapi/respond-openapi.yml
    type: OpenAPI
  - url: collections/respond.postman_collection.json
    type: PostmanCollection
  description: Create internal comments on a contact's conversation for team collaboration,
    with support for mentioning users. Comments are not sent to the contact.
- aid: respond:tags-custom-fields
  name: Respond.io Tags and Custom Fields API
  tags:
  - Tags
  - Custom Fields
  - Metadata
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.respond.io/
  baseURL: https://api.respond.io/v2
  properties:
  - url: https://developers.respond.io/
    type: Documentation
  - url: openapi/respond-openapi.yml
    type: OpenAPI
  - url: collections/respond.postman_collection.json
    type: PostmanCollection
  description: Manage workspace tags (create, update, delete) and add or remove them on
    contacts, plus list and create custom fields used to store structured contact metadata.
- aid: respond:webhooks
  name: Respond.io Webhooks API
  tags:
  - Webhooks
  - Events
  - Notifications
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.respond.io/
  baseURL: https://api.respond.io/v2
  properties:
  - url: https://developers.respond.io/
    type: Documentation
  - url: openapi/respond-openapi.yml
    type: OpenAPI
  - url: review.yml
    type: Review
  description: Subscribe to platform events (new message, message status, new contact,
    conversation opened/closed) delivered to your server as structured JSON payloads
    over HTTPS.
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/respond-io
- type: Website
  url: https://respond.io/
- type: Documentation
  url: https://developers.respond.io/
- type: Plans
  url: plans/respond-plans-pricing.yml
- type: RateLimits
  url: rate-limits/respond-rate-limits.yml
- type: FinOps
  url: finops/respond-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com