Slack API
Slack's developer platform is fully self-serve: a Web API with about 200 methods, an Events API, Socket Mode, and admin surfaces. Auth is OAuth 2.0 with granular bot and user scopes. SCIM, Discovery, and Audit Logs APIs are gated to Business+ and Enterprise Grid.
Frequently asked questions
Slack scores A on the API Report Card. Slack's developer platform is fully self-serve: a Web API with about 200 methods, an Events API, Socket Mode, and admin surfaces. Auth is OAuth 2.0 with granular bot and user scopes. SCIM, Discovery, and Audit Logs APIs are gated to Business+ and Enterprise Grid.
Slack has a workable official integration path. Most engineering teams can build against it directly. Open API: self-serve, documented, with SDKs
Slack is the AI-powered work messaging and collaboration platform owned by Salesforce.
Vertical: misc (horizontal team collaboration; cuts across every Supergood vertical). Sub-vertical: Team Messaging & Collaboration. Channel-based team messaging, DMs, and threaded conversations. Huddles for ad-hoc audio/video meetings and Clips for async recorded updates. Slack Connect for shared channels with vendors, customers, and partners.
Extremely high, 10/10 in tech/startups, 8/10 overall vs. Microsoft Teams which dominates Microsoft 365 shops. Microsoft Teams reports ~360M MAU and ~220M DAU as of mid-2025, while Slack's strength is in tech-forward orgs and developer/IT teams.
Owned by Salesforce (NYSE: CRM); acquired July 2021 for $27.7B. Reports rolled into Salesforce financials, last standalone disclosure cited ~$1.5B+ ARR and 169K+ paid customers at acquisition; current Slack DAU widely estimated in the 35–40M+ range.
Launched 2013, IPO'd via direct listing on NYSE in June 2019, acquired by Salesforce July 2021 ($27.7B).
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.