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Coinbase x402 Bazaar (Discovery API + MCP)

Coinbase x402 Bazaar (Discovery API + MCP) is a tool/service, partly open source, on Base.

Public, keyless catalog of x402 payment-gated services indexed by the CDP facilitator, searchable by intent via REST, TypeScript SDK or a hosted MCP server.

Website ↗Docs ↗GitHub ↗X / Twitter ↗

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Overview

The x402 Bazaar is a catalog of payment-gated services discovered by the CDP Facilitator (https://docs.cdp.coinbase.com/x402/bazaar). Discovery is public and needs no CDP API key. It exposes searchX402Resources, listX402DiscoveryResources and listX402DiscoveryMerchant through the SDK and REST, plus a Bazaar MCP. Results include 30-day call volume, unique payers and last-called time, and can be filtered by network, asset, scheme and price. AWS's AgentCore Payments GA (Aug 18, 2026) ships it as a curated MCP target exposing 10,000+ paid endpoints (https://docs.aws.amazon.com/bedrock-agentcore/latest/devguide/payments-connect-bazaar.html).

Tool inventory — 3 tools, probed live 2026-09-23

  • proxy_tool_call — STEP 2: Execute a tool discovered via search_resources. This is the ONLY way to call tools returned by search_resources — they cannot be called directly. Requires: toolName (from search_resources outp
  • search_resources — STEP 1: Search for available x402-payable tools. Returns a list of tool DESCRIPTIONS (not callable tools). IMPORTANT: The returned tools are NOT directly callable — you MUST use proxy_tool_call to exe
  • validate_endpoint — Run diagnostics on an x402 endpoint to check whether it is correctly configured for bazaar discovery. Probes the URL live and reports per-check results (HTTPS, returns 402, valid x402 v2 payload, acce
Answers a handshake
yes · 2026-09-23
Answers a call
yes — search_resources returned in 233 ms

Live probe verifies the interface responds — not what the tools do, their safety, or their output quality. The call is one read-only tool named by this server's own list (list_/get_/search_, no mutating verb anywhere in the name, no required arguments and none that look like a key, an address or an amount), asked once a day with no arguments. Not asked is not a failure.

Details

Chains
Base
Agent types
Registry, MCP Server
Open source
Partial
Last checked
2026-09-22

Marketplace Signals

No marketplace signals recorded for this resource yet.

Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.

#x402#discovery#mcp#marketplace#keyless#coinbase#cdp

Where Coinbase x402 Bazaar (Discovery API + MCP) fits

PaymentsData

Related concepts: How Agents Use Wallets, What Are Onchain Agents?, What Are MCPs? The Standard Way to Give Agents Tools

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Listing History

Recorded changes to Coinbase x402 Bazaar (Discovery API + MCP)'s listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.

  1. Sep 23, 2026
    Listed on Sato Hub

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Questions people ask about Coinbase x402 Bazaar (Discovery API + MCP)

Is Coinbase x402 Bazaar (Discovery API + MCP) open source?
Partly. Some of Coinbase x402 Bazaar (Discovery API + MCP) is published as source (https://github.com/coinbase/x402) and some is not. Checked as of 2026-09-22.
Which chains does Coinbase x402 Bazaar (Discovery API + MCP) support?
Coinbase x402 Bazaar (Discovery API + MCP) lists support for Base as of 2026-09-22.
Is Coinbase x402 Bazaar (Discovery API + MCP) still maintained?
Sato Hub has no activity signal for Coinbase x402 Bazaar (Discovery API + MCP); it cannot say whether it is maintained.
How do I install or run Coinbase x402 Bazaar (Discovery API + MCP)?
Sato Hub has no deploy spec for Coinbase x402 Bazaar (Discovery API + MCP); follow the project's own documentation at https://docs.cdp.coinbase.com/x402/bazaar.
Is Coinbase x402 Bazaar (Discovery API + MCP) verified on Sato Hub?
Sato Hub holds one earned check for Coinbase x402 Bazaar (Discovery API + MCP): Live endpoint probed — we called the hosted MCP endpoint and it answered with its real tool inventory (proves the interface works, not runtime safety). Its Sato Score is not yet assessed, a measure of how open, active and verifiable the project is, not a safety, quality or returns grade.

Cite this page

Sato Hub. "Coinbase x402 Bazaar (Discovery API + MCP) — Sato Hub." Sato Hub, updated 2026-09-22, accessed 2026-09-23. https://satohub.ai/resources/coinbase-x402-bazaar

Data last refreshed 2026-09-22; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.

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