How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
Slack website screenshot

Slack

Slack is a cloud-based team collaboration platform that provides chat, file sharing, and integrations with other tools and services.

agent ready

Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.

Kin Score
travel_explore apis.io index code GitHub sourcepublic Website

API Evangelist profiles Slack the way a machine reads it — 310 machine-readable artifacts across 32 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Slack scores 65.6/100 (strong), with a separate agent-readiness read of 34/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 65.6/100 · strong
Contract Quality 17.2 / 25
Developer Ergonomics 16.4 / 20
Access Clarity 11.6 / 20
Operational Transparency 8.2 / 13
Contract Governance 3.5 / 12
Discoverability 6.7 / 10
Agent readiness — 34/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract derived 2.5 / 10
Documented Reversibility 0 / 6
MCP Server documented 4.8 / 12
Machine-Readable Auth negotiable 7.5 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7.0 / 7
Rate-Limit Signaling documented 3.5 / 7
Typed Event Surface derived 1.5 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity documented 3.0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Slack Kin Score — API readiness rating by API Evangelist

Put this on your own site. The badge is drawn live from Slack's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.

<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/slack/"
   title="Slack on API Evangelist — API profile and Kin Score">
  <img src="https://apis.io/badge/slack.svg"
       alt="Slack Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>

More shapes, themes and sizes → · Score as JSON · How badges work

How we profile Slack

Each block below is one kind of artifact we hold for Slack. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 48

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Slack Events API

The Slack Events API enables apps to respond to activities in Slack by subscribing to specific event types. Rather than polling for changes, apps receive HTTP POST payloads when...

Slack SCIM API

The Slack SCIM API lets teams on Plus and Enterprise plans provision and manage user accounts and groups programmatically using the SCIM (System for Cross-domain Identity Manage...

Slack Audit Logs API

The Slack Audit Logs API is designed for building security information and event management (SIEM) tools for Slack Enterprise Grid organizations. It provides a read-only view of...

Slack Incoming Webhooks API

Slack Incoming Webhooks provide a simple way to post messages from external sources into Slack. Creating an incoming webhook gives you a unique URL to which you send a JSON payl...

Slack Slash Commands API

Slack Slash Commands allow users to invoke app functionality directly from the message composer box by typing a forward slash followed by a command name and optional parameters....

Slack App Manifest API

The Slack App Manifest API provides methods to programmatically create, configure, update, export, validate, and delete Slack apps using JSON or YAML manifest files. Key methods...

Slack Interactivity API

The Slack Interactivity API encompasses the mechanisms by which Slack apps handle user interactions with interactive components such as buttons, menus, date pickers, modals, sho...

Slack Access API

The Access API from Slack — 4 operation(s) for access.

Slack Add API

The Add API from Slack — 9 operation(s) for add.

Slack Administrative API

The Administrative API from Slack — 56 operation(s) for administrative.

Slack AI API

The AI API from Slack — 3 operation(s) for ai.

Slack Applications API

The Applications API from Slack — 13 operation(s) for applications.

Slack Archive API

The Archive API from Slack — 2 operation(s) for archive.

Slack Auth API

Authentication and authorization methods

Slack Authentication API

The Authentication API from Slack — 2 operation(s) for authentication.

Slack Automation API

The Automation API from Slack — 5 operation(s) for automation.

Slack Bookmarks API

The Bookmarks API from Slack — 4 operation(s) for bookmarks.

Slack Bots API

The Bots API from Slack — 1 operation(s) for bots.

Slack Calls API

The Calls API from Slack — 6 operation(s) for calls.

Slack Canvases API

The Canvases API from Slack — 6 operation(s) for canvases.

Slack Chat API

The Chat API from Slack — 10 operation(s) for chat.

Slack Close API

The Close API from Slack — 1 operation(s) for close.

Slack Comments API

The Comments API from Slack — 1 operation(s) for comments.

Slack Complete API

The Complete API from Slack — 1 operation(s) for complete.

Slack Connect API

The Connect API from Slack — 1 operation(s) for connect.

Slack Conversations API

The Conversations API from Slack — 36 operation(s) for conversations.

Slack Create API

The Create API from Slack — 7 operation(s) for create.

Slack Deletes API

The Deletes API from Slack — 5 operation(s) for deletes.

Slack Disables API

The Disables API from Slack — 1 operation(s) for disables.

Slack Disturb API

The Disturb API from Slack — 5 operation(s) for disturb.

Slack Dnd API

Do Not Disturb management

Slack Emoji API

The Emoji API from Slack — 1 operation(s) for emoji.

Slack Enables API

The Enables API from Slack — 1 operation(s) for enables.

Slack Exchange API

The Exchange API from Slack — 1 operation(s) for exchange.

Slack Files API

The Files API from Slack — 13 operation(s) for files.

Slack Get API

The Get API from Slack — 76 operation(s) for get.

Slack Groups API

The Groups API from Slack — 7 operation(s) for groups.

Slack Lists API

The Lists API from Slack — 34 operation(s) for lists.

Slack Pins API

The Pins API from Slack — 3 operation(s) for pins.

Slack Post API

The Post API from Slack — 94 operation(s) for post.

Slack Reactions API

The Reactions API from Slack — 4 operation(s) for reactions.

Slack Reminders API

Create and manage reminders

Slack Search API

The Search API from Slack — 3 operation(s) for search.

Slack Team API

Access workspace information

Slack Usergroups API

Manage user groups

Slack Users API

The Users API from Slack — 32 operation(s) for users.

Slack Views API

The Views API from Slack — 4 operation(s) for views.

Slack Workflows API

The Workflows API from Slack — 5 operation(s) for workflows.

Scroll within the panel for all 48 ·

Postman Collections 32

A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.

Ready-to-run Postman collections for exercising this provider's APIs.

Slack Admin API

POSTMAN

Slack Apps API

POSTMAN

Slack Assistant API

POSTMAN

Slack Auth API

POSTMAN

Slack Bookmarks API

POSTMAN

Slack Bots API

POSTMAN

Slack Calls API

POSTMAN

Slack Canvases API

POSTMAN

Slack Chat API

POSTMAN

Slack Conversations API

POSTMAN

Slack Dialog API

POSTMAN

Slack DND API

POSTMAN

Slack Emoji API

POSTMAN

Slack Files API

POSTMAN

Slack Functions API

POSTMAN

Slack Lists API

POSTMAN

Slack Migration API

POSTMAN

Slack OAuth API

POSTMAN

Slack OpenID Connect API

POSTMAN

Slack Pins API

POSTMAN

Slack Reactions API

POSTMAN

Slack Reminders API

POSTMAN

Slack RTM API

POSTMAN

Slack Search API

POSTMAN

Slack Stars API

POSTMAN

Slack Team API

POSTMAN

Slack Tests API

POSTMAN

Slack User Groups API

POSTMAN

Slack Users API

POSTMAN

Slack Views API

POSTMAN

Slack Web API

POSTMAN

Slack Workflows

POSTMAN

Scroll within the panel for all 32 ·

Open Collections 141

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Slack Admin Access API

OPEN COLLECTION

Slack Admin Access Add API

OPEN COLLECTION

Slack Admin API

OPEN COLLECTION

Slack Admin Access Administrative API

OPEN COLLECTION

Slack Admin Access AI API

OPEN COLLECTION

Slack Admin Access Applications API

OPEN COLLECTION

Slack Admin Access Approve API

OPEN COLLECTION

Slack Admin Access Approved API

OPEN COLLECTION

Slack Apps API

OPEN COLLECTION

Slack Admin Access Archive API

OPEN COLLECTION

Slack Admin Access Assign API

OPEN COLLECTION

Slack Assistant API

OPEN COLLECTION

Slack Admin Access Assistants API

OPEN COLLECTION

Slack Admin Access Auth API

OPEN COLLECTION

Slack Auth API

OPEN COLLECTION

Slack Admin Access Authentication API

OPEN COLLECTION

Slack Admin Access Authorization API

OPEN COLLECTION

Slack Admin Access Automation API

OPEN COLLECTION

Slack Admin Access Bookmarks API

OPEN COLLECTION

Slack Bookmarks API

OPEN COLLECTION

Slack Admin Access Bots API

OPEN COLLECTION

Slack Bots API

OPEN COLLECTION

Slack Admin Access Calls API

OPEN COLLECTION

Slack Calls API

OPEN COLLECTION

Slack Admin Access Canvases API

OPEN COLLECTION

Slack Canvases API

OPEN COLLECTION

Slack Admin Access Chat API

OPEN COLLECTION

Slack Chat API

OPEN COLLECTION

Slack Admin Access Close API

OPEN COLLECTION

Slack Admin Access Comments API

OPEN COLLECTION

Slack Admin Access Complete API

OPEN COLLECTION

Slack Admin Access Connect API

OPEN COLLECTION

Slack Admin Access Conversations API

OPEN COLLECTION

Slack Conversations API

OPEN COLLECTION

Slack Admin Access Create API

OPEN COLLECTION

Slack Admin Access Delete API

OPEN COLLECTION

Slack Admin Access Deletes API

OPEN COLLECTION

Slack Admin Access Deny API

OPEN COLLECTION

Slack Dialog API

OPEN COLLECTION

Slack Admin Access Disables API

OPEN COLLECTION

Slack Admin Access Disturb API

OPEN COLLECTION

Slack Admin Access Dnd API

OPEN COLLECTION

Slack DND API

OPEN COLLECTION

Slack Admin Access Do API

OPEN COLLECTION

Slack Admin Access Documents API

OPEN COLLECTION

Slack Admin Access Edit API

OPEN COLLECTION

Slack Admin Access Emoji API

OPEN COLLECTION

Slack Emoji API

OPEN COLLECTION

Slack Admin Access Enables API

OPEN COLLECTION

Slack Admin Access End API

OPEN COLLECTION

Slack Admin Access Events API

OPEN COLLECTION

Slack Admin Access Exchange API

OPEN COLLECTION

Slack Admin Access Files API

OPEN COLLECTION

Slack Files API

OPEN COLLECTION

Slack Admin Access Functions API

OPEN COLLECTION

Slack Functions API

OPEN COLLECTION

Slack Admin Access Get API

OPEN COLLECTION

Slack Admin Access Groups API

OPEN COLLECTION

Slack Admin Access History API

OPEN COLLECTION

Slack Admin Access Identity API

OPEN COLLECTION

Slack Admin Access Info API

OPEN COLLECTION

Slack Admin Access Information API

OPEN COLLECTION

Slack Admin Access Invalidate API

OPEN COLLECTION

Slack Admin Access Invites API

OPEN COLLECTION

Slack Admin Access Items API

OPEN COLLECTION

Slack Admin Access Join API

OPEN COLLECTION

Slack Admin Access Kick API

OPEN COLLECTION

Slack Admin Access Leave API

OPEN COLLECTION

Slack Admin Access Lists API

OPEN COLLECTION

Slack Lists API

OPEN COLLECTION

Slack Admin Access Lookup API

OPEN COLLECTION

Slack Admin Access Mark API

OPEN COLLECTION

Slack Admin Access Members API

OPEN COLLECTION

Slack Admin Access Messages API

OPEN COLLECTION

Slack Migration API

OPEN COLLECTION

Slack Admin Access Migrations API

OPEN COLLECTION

Slack Admin Access Oauth API

OPEN COLLECTION

Slack OAuth API

OPEN COLLECTION

Slack Admin Access Open API

OPEN COLLECTION

Slack Admin Access OpenID Connect API

OPEN COLLECTION

Slack OpenID Connect API

OPEN COLLECTION

Slack Admin Access Owners API

OPEN COLLECTION

Slack Admin Access Participants API

OPEN COLLECTION

Slack Admin Access Permissions API

OPEN COLLECTION

Slack Admin Access Pins API

OPEN COLLECTION

Slack Pins API

OPEN COLLECTION

Slack Admin Access Post API

OPEN COLLECTION

Slack Admin Access Profile API

OPEN COLLECTION

Slack Admin Access Project Management API

OPEN COLLECTION

Slack Admin Access Prompts API

OPEN COLLECTION

Slack Admin Access Publish API

OPEN COLLECTION

Slack Admin Access Push API

OPEN COLLECTION

Slack Admin Access Reactions API

OPEN COLLECTION

Slack Reactions API

OPEN COLLECTION

Slack Admin Access Reminders API

OPEN COLLECTION

Slack Reminders API

OPEN COLLECTION

Slack Admin Access Remote API

OPEN COLLECTION

Slack Admin Access Remove API

OPEN COLLECTION

Slack Admin Access Rename API

OPEN COLLECTION

Slack Admin Access Replies API

OPEN COLLECTION

Slack Admin Access Requests API

OPEN COLLECTION

Slack Admin Access Reset API

OPEN COLLECTION

Slack Admin Access Resources API

OPEN COLLECTION

Slack Admin Access Restrict API

OPEN COLLECTION

Slack Admin Access Restricted API

OPEN COLLECTION

Slack Admin Access Revoke API

OPEN COLLECTION

Slack RTM API

OPEN COLLECTION

Slack Admin Access Scopes API

OPEN COLLECTION

Slack Admin Access Search API

OPEN COLLECTION

Slack Search API

OPEN COLLECTION

Slack Admin Access Sections API

OPEN COLLECTION

Slack Admin Access Sessions API

OPEN COLLECTION

Slack Admin Access Set API

OPEN COLLECTION

Slack Admin Access Sets API

OPEN COLLECTION

Slack Admin Access Settings API

OPEN COLLECTION

Slack Admin Access Share API

OPEN COLLECTION

Slack Admin Access Snooze API

OPEN COLLECTION

Slack Stars API

OPEN COLLECTION

Slack Admin Access Status API

OPEN COLLECTION

Slack Admin Access Team API

OPEN COLLECTION

Slack Team API

OPEN COLLECTION

Slack Admin Access Teams API

OPEN COLLECTION

Slack Tests API

OPEN COLLECTION

Slack Admin Access Tests API

OPEN COLLECTION

Slack Admin Access Titles API

OPEN COLLECTION

Slack Admin Access Tokens API

OPEN COLLECTION

Slack Admin Access Unarchive API

OPEN COLLECTION

Slack Admin Access Unfurl API

OPEN COLLECTION

Slack Admin Access Uninstall API

OPEN COLLECTION

Slack Admin Access Update API

OPEN COLLECTION

Slack Admin Access Upload API

OPEN COLLECTION

Slack Admin Access Usergroups API

OPEN COLLECTION

Slack User Groups API

OPEN COLLECTION

Slack Admin Access Users API

OPEN COLLECTION

Slack Users API

OPEN COLLECTION

Slack Admin Access Views API

OPEN COLLECTION

Slack Views API

OPEN COLLECTION

Slack Web API

OPEN COLLECTION

Slack Admin Access Workflows API

OPEN COLLECTION

Slack Workflows

OPEN COLLECTION

Scroll within the panel for all 141 ·

Arazzo Workflows 22

Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.

Multi-step API workflows described with the Arazzo specification.

Slack Add a Channel Bookmark and Announce It

Add a link bookmark to a channel and post a message about it.

ARAZZO

Slack Add a Reminder and Confirm It

Create a reminder for a user and read it back to confirm.

ARAZZO

Slack Announce and Archive a Channel

Post a final notice to a channel and then archive it.

ARAZZO

Slack Audit Channels and Post a Summary

List the workspace channels and post a summary message to a channel.

ARAZZO

Slack Create Channel, Invite Members, and Announce

Create a new channel, invite a set of users, and post a kickoff message.

ARAZZO

Slack Create a User Group and Assign Members

Create a user group, assign members, and confirm the membership list.

ARAZZO

Slack Find User by Email and Direct Message Them

Look up a user by email, open a direct message channel, and post a message.

ARAZZO

Slack Look Up a User and Invite Them to a Channel

Resolve a user by email, invite them to a channel, and welcome them.

ARAZZO

Slack Share a Message Permalink in a Direct Message

Get a message permalink and send it to a user in a direct message.

ARAZZO

Slack Post a Poll Message, Seed Reactions, and Read Tally

Post a message, seed two reaction options, and read back the reaction tally.

ARAZZO

Slack Post a Message, React, and Pin It

Post a message to a channel, add a reaction emoji, and pin it.

ARAZZO

Slack Post a Message and Reply in Thread

Post a parent message and then post a threaded reply under it.

ARAZZO

Slack Post a Message and Update It Later

Post an initial status message and then edit it in place with an update.

ARAZZO

Slack Read Channel History and Mark It Read

Fetch a channel's recent history and mark the channel read up to the latest message.

ARAZZO

Slack Remove a Member from a Channel and Log It

Resolve a user by email, remove them from a channel, and log the change.

ARAZZO

Slack Rename a Channel and Announce the Change

Rename a channel and post a message announcing the new name.

ARAZZO

Slack Schedule a Message and Verify It

Schedule a future message to a channel and confirm it appears in the queue.

ARAZZO

Slack Search Messages and React to the Top Match

Search messages for a query and add a reaction to the best match.

ARAZZO

Slack Set Channel Topic and Purpose

Set a channel's topic and purpose, then announce the update.

ARAZZO

Slack Set Status, Snooze Notifications, and Notify a Channel

Set a custom status, snooze do not disturb, and post a heads up message.

ARAZZO

Slack Upload a File and Announce It

Upload a file to a channel and post a follow up message referencing it.

ARAZZO

Slack Look Up a User and Send a Personalized Greeting

Fetch a user's profile, open a DM, and post a personalized greeting.

ARAZZO

Scroll within the panel for all 22 ·

MCP Servers 1

Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.

Model Context Protocol servers that expose these APIs to AI agents.

MCP Server

MCP SERVER

GraphQL 1

Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.

GraphQL schemas published by this provider.

Slack GraphQL

Slack does not expose a native public GraphQL endpoint. The Slack platform APIs are REST-based: the Web API (https://slack.com/api/*) is an HTTP/JSON interface, the Events API d...

GRAPHQL

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.

Published pricing tiers and plan structures.

Slack Plans Pricing

4 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Slack Rate Limits

6 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

Cost, billing, and metering signals for API financial operations.

Slack Finops

FINOPS

Features 16

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

Notable capabilities this provider offers.

Web API for messaging, channel, and user management
Events API for real-time event subscription (30k events/hr/workspace cap)
RTM API (legacy) for WebSocket-based event streaming
Slack Bolt SDK for Python, JavaScript, Java
Workflow Builder for no-code automation
Slash commands and shortcuts
Block Kit for rich message formatting
Modals and views for interactive UI
OAuth 2.0 with granular scopes
Free plan with 90-day message history
Pro plan at $7.25/user/mo annual with unlimited history
Business+ at $15/user/mo with SSO, compliance, full AI
Enterprise Grid with custom pricing for 500+ users
Per-method tiered rate limits (Tier 1-4)
chat.postMessage limited to 1/sec/channel with burst allowance
Apps directory and Slack Connect for cross-org channels

Scroll within the panel for all 16 ·

Event Specifications 1

Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Slack Events API

The Slack Events API enables apps to respond to activities in Slack by subscribing to specific event types. Rather than polling for changes, apps receive HTTP POST payloads when...

ASYNCAPI

Semantic Vocabularies 2

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Slack Context

0 classes · 8 properties

JSON-LD

Slack Web Context

0 classes · 0 properties

JSON-LD

Spectral Rules 3

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

Slack API Rules

3 rules · 1 errors · 2 warnings

SPECTRAL

Slack API Rules

5 rules · 4 warnings

SPECTRAL

Slack API Rules

15 rules · 8 errors · 7 warnings

SPECTRAL

JSON Schema 8

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

Standalone JSON Schema definitions for this provider's data models.

Slack Channel

41 properties

JSON SCHEMA

Slack Message

30 properties

JSON SCHEMA

Channel

31 properties

JSON SCHEMA

ErrorResponse

3 properties

JSON SCHEMA

File

28 properties

JSON SCHEMA

Message

20 properties

JSON SCHEMA

ResponseMetadata

1 properties

JSON SCHEMA

User

20 properties

JSON SCHEMA

Scroll within the panel for all 8 ·

JSON Structure 6

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Slack Web Channel Structure

31 properties

JSON STRUCTURE

Slack Web Error Response Structure

3 properties

JSON STRUCTURE

Slack Web File Structure

28 properties

JSON STRUCTURE

Slack Web Message Structure

20 properties

JSON STRUCTURE

Slack Web Response Metadata Structure

1 properties

JSON STRUCTURE

Slack Web User Structure

20 properties

JSON STRUCTURE

Examples 6

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Slack Web Channel Example

31 fields

EXAMPLE

Slack Web Error Response Example

3 fields

EXAMPLE

Slack Web File Example

28 fields

EXAMPLE

Slack Web Message Example

20 fields

EXAMPLE

Slack Web Response Metadata Example

1 fields

EXAMPLE

Slack Web User Example

20 fields

EXAMPLE

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Slack Authentication

http/oauth2 · 2 schemes

SECURITY

Slack Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Slack Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Slack Trust Center

FedRAMP, GDPR

SECURITY

Scopes 1

OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.

OAuth scopes governing access to this provider's APIs.

Slack Scopes

13 scopes · authorizationCode

13 scopes

SCOPES

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Slack Agentic Access

252 operations · 145 acting · 5 human-in-the-loop

252 operations · 145 acting

AGENTIC

Use Cases 7

What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.

What developers build with this provider.

DevOps teams automating deployment notifications and incident response

Customer support teams routing tickets and managing escalations

HR teams onboarding employees with automated workflows and reminders

Sales teams receiving CRM alerts and managing deal updates in channels

Engineering teams integrating CI/CD pipelines and code review notifications

IT admins provisioning users and managing workspace security at scale

Product teams collecting feedback with interactive surveys and polls

Scroll within the panel for all 7 ·

Integrations 7

Pre-built integrations with other platforms tell you where this provider already fits in a stack.

Pre-built integrations with other platforms and tools.

Python Slack SDK for building bots and web API clients

Node.js Bolt framework for rapid app development

Java Slack SDK for enterprise Java applications

Deno Slack SDK for serverless Slack functions

Slack CLI for local development and app deployment

Incoming Webhooks for simple message posting from external systems

SCIM API for identity provider integration and user provisioning

Scroll within the panel for all 7 ·

Resources

Every other property we hold for Slack — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 5

Portal, sign-up, and the first successful call

Portal
Portal
 GettingStarted
GettingStarted
 Sandbox
Sandbox
 GettingStarted
GettingStarted
 Signup
Signup

Documentation 5

Reference material describing how the API behaves

OpenAPISpecs
OpenAPISpecs
 APIReference
APIReference
 BlockKitReference
BlockKitReference
 AuditLogsAPIReference
AuditLogsAPIReference
 SCIMAPIReference
SCIMAPIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 MCPServer
MCPServer
 LlmsText
LlmsText

Design & Contract 25

Pagination, idempotency, versioning, errors, and events

Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Arazzo
Arazzo
 Webhooks
Webhooks
 SpectralRules
SpectralRules
 Vocabulary
Vocabulary

Scroll within the panel for all 25 ·

Build 13

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 CodeExamples
CodeExamples
 SDKs
SDKs
 GitHubOrganization
GitHubOrganization
 Python SDK
SDKs
 Node.js SDK
SDKs
 Java SDK
SDKs
 Bolt for Python
SDKs
 Bolt for JavaScript
SDKs
 Deno SDK
SDKs
 CLI
CLI
 DenoSDK
DenoSDK
 BoltJavaSDK
BoltJavaSDK

Scroll within the panel for all 13 ·

Access & Security 10

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes
 Authentication
Authentication
 OAuth
OAuth
 Security
Security
 Scopes
Scopes
 SecurityBestPractices
SecurityBestPractices

Scroll within the panel for all 10 ·

Learn 1

Tutorials, courses, talks, and written guidance

Tutorials
Tutorials

Operate 10

Status, limits, changes, and where to get help

StatusPage
StatusPage
 Community
Community
 Support
Support
 ChangeLog
ChangeLog
 RateLimits
RateLimits
 SlackConnect
SlackConnect
 FAQ
FAQ
 DeveloperSupport
DeveloperSupport
 DeveloperChangelog
DeveloperChangelog
 SlashCommands
SlashCommands

Scroll within the panel for all 10 ·

Commercial 5

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 TermsOfService
TermsOfService
 Plans
Plans
 PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Blog
Blog
 DeveloperBlog
DeveloperBlog

Other 14

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap
 ParentCompany
ParentCompany
 Marketplace
Marketplace
 BlockKit
BlockKit
 EventsAPI
EventsAPI
 SocketMode
SocketMode
 MCP Plugin
Resources
 GitHub Action
Resources
 Manifest Schema
Resources
 DeveloperProgram
DeveloperProgram
 ApplicationManagement
ApplicationManagement
 Marketplace
Marketplace
 AppManifest
AppManifest
 Interactivity
Interactivity

Scroll within the panel for all 14 ·

← All providers · Data indexed from github.com/api-evangelist/slack · machine-readable index on apis.io

Where this information came from

This is an independent, third-party profile of Slack, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put 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.