This is not our API. This repository is an independent, third-party profile of a company's publicly available API surface, maintained by API Evangelist. API Evangelist does not operate, host, resell, or support this company's APIs, and is not affiliated with or endorsed by the company unless stated on the profile.
Where the information came from. Everything here is assembled from material a member of the public can reach with a browser and no credentials — the company's own website, developer portal and documentation, the specifications it publishes for public use (OpenAPI, AsyncAPI, JSON Schema,
apis.json,llms.txtand similar), its public repositories, and its public status, pricing and changelog pages. Nothing here is obtained by breaching a system, defeating an access control, or using credentials of any kind.The rating is an independent assessment. The Kin Score and Agent Readiness rating are independently calculated scores of a company's public API artifacts, produced by API Evangelist against a published rubric. They are not certifications, endorsements, security assessments, or audits, and they score published artifacts — not the quality, safety, or security of the software.
Corrections, re-scores, and removal are free. No partnership, contract, or purchase is required, and you do not need to justify the request.
- Something wrong? Open an issue on this repository, or email info@apievangelist.com.
- Published something new? Ask for a re-score and we will re-run the rating.
- Want the listing taken down? Say so and we will honor it. The profile is reduced to your company name, a factual description, and a link to your own site, and the company is recorded as unrated — never scored zero for having asked.
Response times. Acknowledgement within one business day; removal or restriction within two business days; corrections and re-scores within five business days.
On a security or compliance team? Email info@apievangelist.com with security in the subject line and you will get a person, not a form. We will tell you exactly which public URLs this profile was built from so your team can see the same surface we did, and we will take the listing down on request while you work through it.
Full detail: Where this data comes from
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.
APIs.json: https://raw.githubusercontent.com/api-evangelist/respond/refs/heads/main/apis.yml
- Messaging
- Omnichannel
- Customer Conversations
- AI
- Created: 2026-06-20
- Modified: 2026-06-20
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.
- Human URL: https://developers.respond.io/docs/api/c6e1aa937640e-contact
- Base URL:
https://api.respond.io/v2
- Contacts
- CRM
- Identity
- Documentation
- API Reference
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
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.
- Human URL: https://developers.respond.io/docs/api/a748f5bfb1bb5-send-a-message
- Base URL:
https://api.respond.io/v2
- Messages
- Send
- Omnichannel
- Documentation
- API Reference
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Open and close conversations for a contact, set conversation status, and assign or unassign users (human agents or AI agents) to the conversation.
- Human URL: https://developers.respond.io/docs/api/fd927d6437cf5-conversation
- Base URL:
https://api.respond.io/v2
- Conversations
- Inbox
- Assignment
- Documentation
- API Reference
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Create internal comments on a contact's conversation for team collaboration, with support for mentioning users. Comments are not sent to the contact.
- Human URL: https://developers.respond.io/
- Base URL:
https://api.respond.io/v2
- Comments
- Internal Notes
- Collaboration
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
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.
- Human URL: https://developers.respond.io/
- Base URL:
https://api.respond.io/v2
- Tags
- Custom Fields
- Metadata
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Subscribe to platform events (new message, message status, new contact, conversation opened/closed) delivered to your server as structured JSON payloads over HTTPS.
- Human URL: https://developers.respond.io/
- Base URL:
https://api.respond.io/v2
- Webhooks
- Events
- Notifications
FN: Kin Lane Email: kin@apievangelist.com