Slack API

Beginner's Pick Social / OAuth Advanced HTTPS

63 C

Metadata Score Metadata estimate · not endpoint-tested

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Overview

Slack API lets you build bots, post messages, read channel history, and integrate workflows into Slack workspaces using OAuth 2.0. It has one of the best-documented APIs in the industry, with an interactive API Tester and a Bolt SDK for Node.js and Python that makes building Slack apps much easier. Beginners should start with the Slack Bolt framework to skip low-level OAuth boilerplate.

Beginner Tip

Use the Slack Bolt SDK (available for Node.js and Python) to build your first Slack app — it handles OAuth, event routing, and middleware so you can focus on the logic rather than setup.

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

match scores and results

team standings

player statistics

schedule and fixtures

Use case: Integrate team instant messaging data into web and mobile applications

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative

{
  "match_id": 4521,
  "home_team": "Team A",
  "away_team": "Team B",
  "score": {
    "home": 2,
    "away": 1
  },
  "status": "Full Time",
  "date": "2025-01-15",
  "league": "Premier League"
}

Field Reference

ok True if the API call succeeded; false if there was an error

error Machine-readable error code present only when ok is false (e.g., not_authed, channel_not_found)

channel ID of the channel the message was posted to

ts Timestamp of the message, used as a unique ID to reference or reply to the message

message.text The text content of the posted message

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request

const url = "https://api.slack.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "Authorization": "Bearer YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

not_authed or invalid_auth Bot token is missing or incorrect in the Authorization header

✓ Install your Slack app to a workspace, copy the Bot User OAuth Token (starts with xoxb-), and pass it as "Authorization: Bearer xoxb-..."

missing_scope Your app does not have the required OAuth scope for the method you are calling

✓ Go to your app's OAuth and Permissions page at api.slack.com/apps, add the required scope (e.g., chat:write), and reinstall the app

channel_not_found The channel ID is wrong or the bot has not been invited to that channel

✓ Use the channel ID (starts with C) not its name, and invite the bot to the channel with /invite @your-bot-name

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

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