Founder of a listed tool

Cal Henderson

Co-founder, Slack Technologies, named behind the Slack MCP Server (official) listing on Anchor Terminal.

Co-founder, Slack Technologies

No about written yet. If this is you, you can send us one, with a photo if you like, at the address below.

What Cal builds

Slack MCP Server (official) C · Work & productivity
Slack's hosted MCP server for searching, reading and posting workspace content, with OAuth authentication.
Co-founder, Slack Technologies, researched 28 October 2026 · the people behind it

Works with

Eric Costello Co-founder, Slack Technologies
Serguei Mourachov Co-founder, Slack Technologies
Stewart Butterfield Co-founder, Slack Technologies

Questions

Who is Cal Henderson?

Cal Henderson is co-founder of Slack Technologies.

What does Slack (Salesforce) make?

Anchor Terminal lists Slack MCP Server (official) from Slack (Salesforce). Slack's hosted MCP server for searching, reading and posting workspace content, with OAuth authentication.

How are Cal's tools graded?

Slack MCP Server (official) is graded C, 59.7 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

Sources (3)

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.