# Respond.io

**Canonical:** https://apis.io/providers/respond/  
**Website:** https://respond.io/  
**APIs profiled:** 6

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.

## Kin Score — 41.1 / 100 (developing)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 41.1).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 61.5 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 31.6 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 47.4 |
| Access Clarity | 47.4 |

## Agent readiness — 35.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (6)

- **Respond.io Comments API** — Internal collaboration comments on a contact.
- **Respond.io Contacts API** — Create, read, update, merge, list, and delete contacts.
- **Respond.io Conversations API** — Open, close, status, and assign conversations.
- **Respond.io Custom Fields API** — Structured contact metadata definitions.
- **Respond.io Messages API** — Send messages to contacts and read message history.
- **Respond.io Tags API** — Workspace tags and contact tag assignment.

## Agentic access (1)

- **Respond Agentic Access** — 20 operations · 15 acting

## Security (3)

- **Respond Authentication** — http · 1 scheme
- **Respond Domain Security** — TLSv1.3 · HSTS · DMARC
- **Respond Trust Center** — ISO 27001, GDPR

## Plans (1)

- **Respond Plans Pricing**

## Tags

Messaging, Omnichannel, Customer Conversations, WhatsApp, Artificial Intelligence

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/respond/). Scores are computed from the provider's own public artifacts under a published rubric.