# Vessel Chat Unified API

**Canonical:** https://apis.io/apis/vessel/chat-unified-api/  
**Provider:** Vessel — https://apis.io/providers/vessel/  
**Base URL:** https://api.vessel.dev  
**Documentation:** https://www.vessel.dev/

Vessel Chat Unified API is one of 20 APIs that [Vessel](https://apis.io/providers/vessel/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Chat, Slack, Microsoft Teams, Unified-API, and Messaging. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and a GitHub repository.

The Vessel Chat Unified API normalizes chat platform objects across Slack and Microsoft Teams under /api/unifications/chat, providing a single interface for channels, messages and users. Published by Vessel as OpenAPI 3.1.0 with 4 operations.

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/vessel/refs/heads/main/openapi/vessel-chat-openapi.yml
- **Documentation** — https://github.com/vesselapi/all-api-docs
- **APIReference** — https://github.com/vesselapi/all-api-docs/tree/main/docs/pages
- **GitHubRepository** — https://github.com/vesselapi/all-api-docs
- **SpectralRuleset** — https://raw.githubusercontent.com/api-evangelist/vessel/refs/heads/main/rules/vessel-api-rules.yml

## Other Vessel APIs (12)

- [Vessel Platform API](https://apis.io/apis/vessel/platform-api/)
- [Vessel CRM Unified API](https://apis.io/apis/vessel/crm-unified-api/)
- [Vessel Sales Engagement Unified API](https://apis.io/apis/vessel/engagement-unified-api/)
- [Vessel Dialer Unified API](https://apis.io/apis/vessel/dialer-unified-api/)
- [Vessel Marketing Automation Unified API](https://apis.io/apis/vessel/marketing-automation-unified-api/)
- [Vessel CRM API (v1, legacy)](https://apis.io/apis/vessel/crm-api-v1/)
- [Vessel Engagement API (v1, legacy)](https://apis.io/apis/vessel/engagement-api-v1/)
- [Vessel Salesforce Actions API](https://apis.io/apis/vessel/salesforce-actions-api/)
- [Vessel Slack Actions API](https://apis.io/apis/vessel/slack-actions-api/)
- [Vessel Microsoft Teams Actions API](https://apis.io/apis/vessel/teams-actions-api/)
- [Vessel Outreach Actions API](https://apis.io/apis/vessel/outreach-actions-api/)
- [Vessel Salesloft Actions API](https://apis.io/apis/vessel/salesloft-actions-api/)

## Tags

Chat, Slack, Microsoft Teams, Unified-API, Messaging

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/vessel/chat-unified-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/vessel/.