Salesforce · communications · founded 2013
Slack for humans
Slack is workplace chat: channels, DMs, huddles, canvases, and a universe of bots. Humans drown in it or live in it. The Web API, Events API, and Block Kit make it one of the most agent-operable communication products on earth — which is why every SaaS ships a Slack notification. Salesforce owns it; the product is still Slack. Agent Twin Score is excellent on purpose. Twin Score on this directory is 86 for humans and 90 for agents, using the public rubric (interface, onboarding, human docs, collaboration, support, pricing fairness, accessibility, reliability versus API quality, MCP or tool surface, CLI, structured docs, machine auth, quotas, determinism, and skill packaging). Slack is sold by Salesforce, founded 2013, headquartered in San Francisco, USA. Pricing in public materials: Free; Pro, Business+, Enterprise Grid per-seat. Connectors and AI extras on higher plans. Machine capabilities we record: API excellent, MCP basic, CLI basic, docs excellent, auth OAuth, bot tokens, socket mode. This page is editorial, not a star rating scraped from users.
Updated 2026-08-01. Editorial, not a user-count rating.
Edited by Edu Tor. Twin Score updated 2026-08-01. Method: methodology and rubric.
Twin page for agents: Slack on Build Something Agents Want.
Capability matrix
This matrix is the same data agents see. MCP is listed only when a real surface exists — we do not fake a manifest.
API, MCP, CLI, docs, auth
| Surface | Level |
|---|---|
| API | excellent |
| MCP | basic |
| CLI | basic |
| Docs | excellent |
| Auth | OAuth, bot tokens, socket mode |
| SDKs | node, python, http |
Pricing and facts
Free; Pro, Business+, Enterprise Grid per-seat. Connectors and AI extras on higher plans. Headquarters: San Francisco, USA. Official site: https://slack.com.
Editorial reviews
- Slack for humans: an editorial Twin Score review — editorial · staff
- Slack for agents: capability notes — editorial · staff