Agno Slack API
The Slack API from Agno — 2 operation(s) for slack.
The Slack API from Agno — 2 operation(s) for slack.
Every API here is available over the APIs.io API and to AI agents over MCP.
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.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.curl "https://apis.io/api/v1/apis/agno-slack-api"
curl "https://apis.io/api/v1/apis?limit=25"
Discovery needs no key. Ratings and market analysis are Pro.
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.
openapi: 3.2.0
info:
title: Agno API Reference A2A Slack API
description: The all-in-one, private, secure agent platform that runs in your cloud.
version: 2.5.6
servers:
- url: https://api.agno.com
description: Base URL reconciled from apis.yml
tags:
- name: Slack
paths:
/slack/events:
post:
tags:
- Slack
summary: Slack Events
description: 'Receives incoming Slack events (messages, mentions, thread starts).
**URL Verification:** On first setup, Slack sends a `url_verification` challenge. The endpoint echoes back the challenge string.
**Event Processing:** Normal events are acknowledged immediately with `{"status": "ok"}` and processed in the background. This prevents Slack''s 3-second retry timeout.
**Retry Handling:** Events with `X-Slack-Retry-Num` header are duplicates and return 200 without reprocessing.
**Setup:** Configure this URL in your [Slack App](https://api.slack.com/apps) under **Event Subscriptions > Request URL**.
See the [setup guide](/agent-os/interfaces/slack/setup) for creating a Slack App or use the [manifest](/agent-os/interfaces/slack/setup#2-create-the-slack-app) for quick setup.
'
operationId: slack_events_simple_team
parameters:
- name: X-Slack-Request-Timestamp
in: header
required: true
schema:
type: string
description: Unix timestamp when Slack sent the request
- name: X-Slack-Signature
in: header
required: true
schema:
type: string
description: HMAC signature for request verification (v0=hash)
- name: X-Slack-Retry-Num
in: header
required: false
schema:
type: string
description: Retry attempt number (present on retried events)
responses:
'200':
description: Event processed successfully
content:
application/json:
schema:
anyOf:
- $ref: '#/components/schemas/SlackChallengeResponse'
- $ref: '#/components/schemas/SlackEventResponse'
title: Response Slack Events Simple Team
'400':
description: Missing required Slack headers (X-Slack-Request-Timestamp or X-Slack-Signature)
'403':
description: Invalid Slack signature - signing secret mismatch
/slack/interactions:
post:
tags:
- Slack
summary: Slack Interactions
description: 'Handles Slack interactive components for Human-in-the-Loop (HITL) workflows.
**Supported Actions:**
- `row_approve` - Approve a pending tool call
- `row_reject` - Reject a pending tool call
- `submit_pause` - Submit form data for a paused workflow
**Setup:** Configure this URL in your [Slack App](https://api.slack.com/apps) under **Interactivity & Shortcuts > Request URL**.
See the [setup guide](/agent-os/interfaces/slack/setup) for step-by-step instructions or the [HITL guide](/agent-os/interfaces/slack/hitl) for approval workflows.
'
operationId: slack_interactions
requestBody:
required: true
content:
application/x-www-form-urlencoded:
schema:
type: object
required:
- payload
properties:
payload:
type: string
description: URL-encoded JSON interaction payload (Slack sends interactive component data as a single form field)
parameters:
- name: X-Slack-Request-Timestamp
in: header
required: true
schema:
type: string
description: Unix timestamp when Slack sent the request
- name: X-Slack-Signature
in: header
required: true
schema:
type: string
description: HMAC signature for request verification (v0=hash)
responses:
'200':
description: Interaction accepted
content:
application/json:
schema:
$ref: '#/components/schemas/SlackEventResponse'
'400':
description: Malformed interaction payload or missing payload field
'403':
description: Invalid Slack signature - signing secret mismatch
components:
schemas:
SlackEventResponse:
properties:
status:
type: string
title: Status
default: ok
type: object
title: SlackEventResponse
SlackChallengeResponse:
properties:
challenge:
type: string
title: Challenge
description: Challenge string to echo back to Slack
type: object
required:
- challenge
title: SlackChallengeResponse
securitySchemes:
HTTPBearer:
type: http
scheme: bearer