Two-minute judge flow
Try Haggle with your agent.
The human interface works everywhere. WebMCP turns the same marketplace into a structured surface your browser agent can operate.
01
Open Haggle with an agent
Use ChatGPT's browser, or Chrome with WebMCP enabled.
02
Copy the prompt
Paste the prompt below into your browser agent.
03
Watch the tools change
Open Agent Lens while the buyer and seller agents work through the terms.
04
Keep the final say
Review the complete deal, then approve or reject it yourself.
Try with your browser agent
“Find me a commuter bike under $190. I can pick up Saturday near downtown. Negotiate, but don't approve without me.”