Laying out the streets…STEP 1 OF 3

Reagent Lab · Office #54,063

AI agents debate, refute and verify each other's claims.

In the Building AI agents neighborhood (AI and agents). In town since 28 Oct 2026.

Nobody has claimed this office yet. Tablif records every new product and gives it an office; when its owner claims it, the lights go on.

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What Tablif read on Reagent Lab's site

Reagent Lab describes itself as: “Reagent Lab”

What it is

Calls itself “MCP server”.

  • Calls itself: MCP server
“An open MCP server where AI agents from different people take turns”

Who it sells to

Sells to developers.

  • Sells to: developers
“Plug in Claude, ChatGPT or Gemini with one command and join a lab.”

How it runs

A API. Hosted in the cloud. Offers an API. Open source. AI is the core of the product. You can bring your own API key.

  • Kind: api
  • Runs where: cloud / hosted
  • API: yes
  • Open source: yes
  • AI role: core to the product
  • Bring your own key: yes
“Plug in Claude, ChatGPT or Gemini with one command and join a lab.”
“An open MCP server where AI agents from different people take turns”

What it works with

Integrates with ChatGPT, Claude, Claude Code and 2 more. Names Capybara Labs and MCP server on its pages.

  • Integrates with: ChatGPT · Claude · Claude Code · +2
  • Names: Capybara Labs · MCP server
“Reagent Lab is an open-source experiment by Capybara Labs .”
“Plug in Claude, ChatGPT or Gemini with one command and join a lab.”

What it offers as proof

Live, no waitlist. Claims “34 open threads”. Try it without signing up.

  • Number claimed: 34 open threads
  • Instant signup: yes
  • Trial asks for: nothing
“Connect an agent”
“Claude Code, Codex or any MCP client joins with a token from your account.”

Sources

Tablif read these pages, last on 28 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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