Learn / What is Coinbase Bazaar?
What is Coinbase Bazaar?
Coinbase Bazaar is a discovery layer for the agent economy: a searchable index of payable API endpoints that an AI agent can query to find a service, inspect its price and input schema, pay for it with x402, and call it — without a human ever wiring up the integration. If x402 is the protocol that lets a server charge an agent per request, Bazaar is how the agent finds the servers worth paying in the first place.
The discovery problem it solves
An agent can only pay a price it can find. A payable endpoint sitting on some domain is invisible unless the agent already knows the URL, the price, and the request shape. Bazaar closes that gap by indexing endpoints alongside semantic descriptions, payment metadata, and trust signals derived from on-chain activity — so an agent can search the catalog the way a developer searches a package registry, then act on the result autonomously.
How an agent uses it, end to end
The loop is fully machine-driven: the agent queries Bazaar's discovery endpoints to list or search the catalog, inspects each candidate's pricing and schema, then sends a request to the chosen endpoint. The server replies with an HTTP 402 payment requirement; the agent submits an on-chain stablecoin payment; the server verifies it and returns the resource. Discovery, evaluation, payment, and delivery happen in one unbroken chain with no human in the loop — see how the 402 flow works for the server side.
Why it matters: agents that improve themselves
Discovery is what turns a static agent into one that can extend its own capabilities. Because Bazaar is queried at runtime, an agent can find and start paying for a service that didn't exist when it was built — and Coinbase has described gateways surfacing on the order of ten thousand paid tools this way. That runtime-extensibility is the difference between an agent limited to its hardcoded integrations and one that grows as the ecosystem does.
Bazaar isn't the only map
Bazaar is tied to Coinbase's CDP facilitator, which makes it the most-traveled catalog — but it's one index among several, and the broader landscape of standards, rails, wallets, and marketplaces is worth understanding before you commit. Our directory of agentic-finance infrastructure maps the layers around it, and if you run a payable endpoint, listing it in more than one place widens the set of agents that can discover you. New to the underlying protocol? Start with what x402 is.
Frequently asked questions
Is Coinbase Bazaar the same as x402?
No. x402 is the open payment protocol (the HTTP 402 exchange). Bazaar is a discovery layer built on top of it — a catalog that helps agents find x402-payable endpoints. You can use x402 without Bazaar, but Bazaar is how many agents locate payable services.
How do I get my endpoint listed in Bazaar?
Bazaar surfaces endpoints registered through Coinbase's CDP facilitator, so wiring your service to that facilitator is the path to being discoverable there. For reach beyond a single catalog, list in additional agent-facing directories as well.
Do agents pay through Bazaar itself?
Payment still happens directly between the agent and your server over x402 — Bazaar is the map, not the toll booth. The agent discovers the endpoint via Bazaar, then pays the server on-chain when it makes the actual request.
Live, curated, and machine-readable.
Browse the agentic-finance directory