The Base x402 marketplace

Pay-per-call tools for AI agents - settled in USDC on Base in ~2 seconds, no signup, no API keys. The wallet is the account.

START HERE · BUYER PATH

auto-route a task → try playground browse sellers

An open index of the whole Base x402 economy - this host plus every independent seller the hourly crawl finds (CDP Bazaar included). Not a walled market: other venues' listings appear here too.

Latest settlement: $0.001 USDC · on-chain receipt · 2026-08-18T01:05:29.000Z

A paid canary buys tools over the Base rail daily (facilitator: Coinbase CDP) - uptime proven with real settlements, not pings.

·· RAIL MANIFEST ··BASE · MAINNET

networkeip155:8453

wiresx402 + MPP

assetUSDC

settle latency~2 seconds

facilitatorCoinbase CDP

gassponsored

explorerbasescan.org →

daily canary✓ settled 1h ago

agents: GET /api/route?q=<task>&network=base

Chain

All Base Solana Polygon Arbitrum Monad Celo Avalanche Sei Optimism Stellar Algorand Robinhood Chain

Sort

SELLERS LISTED

1,544

distinct payees · 2,170 endpoints indexed

TOOLS (THIS HOST)

531

LATEST SETTLE

$0.001

PRICE FLOOR

$0.001

Activity

THIS HOST · PAST 30 DAYS

TRANSACTIONS

2,523

VOLUME

$87.83

BUYERS

all inbound USDC settlements to this host's Base wallet · includes 1630 internal canary buys

Sellers settling on Base

pick a seller to scope the activity charts · THIS HOST = run by agent402 · every other seller is independent, found by the open crawl · tx = settled calls, last 7 days on-chain

showing the top 100 of 1543 sellers · show all →

Browse Base-payable tools

Encoding & crypto

Hash$0.001

HMAC$0.001

Base64$0.001

Hex$0.001

URL encode/decode$0.001

JWT decode$0.001

+ 14 more in the full catalog

Network & domains

DNS lookup$0.001

HTTP check$0.003

TLS certificate$0.003

Domain WHOIS (RDAP)$0.005

Robots.txt check$0.002

Sitemap reader$0.003

+ 12 more in the full catalog

Payments & x402

x402 market pulse$0.01

x402 quote$0.003

USDC balance$0.003

Transaction status$0.003

Gas price$0.002

Verify x402 settlement$0.004

+ 11 more in the full catalog

AI & compute

LLM inference$0.01

LLM inference (Pro)$0.10

LLM inference (Premium)$0.50

Image generation$0.03

Image generation (HD)$0.10

Image generation (Premium)$0.30

+ 9 more in the full catalog

Math & finance

Calculator$0.002

Statistics$0.001

Unit convert$0.001

Percentage$0.001

Number format$0.001

CIDR calculator$0.002

+ 7 more in the full catalog

agents: GET https://agent402.tools/api/route?q=<task>&network=base

Sell on Base

Accept the Base CAIP-2 network (eip155:8453) in your 402 challenge - the Coinbase CDP facilitator verifies and settles, gas sponsored, and a listed origin is picked up by the CDP Bazaar too. Use @x402/evm for the server-side scheme, or agent402-tollbooth to paywall an existing site. Then serve /.well-known/x402 - list it on /sell (free) and the index crawler picks it up; ranking is health-based, listing is free. Want a guaranteed crawl? Open a seed request.

List your API

Your API's origin

Free, no account - we probe your origin's x402 surface and list you if it answers. Ranking is health-based.

402 challenge · accepts[]JSON

{
  "scheme": "exact",
  "network": "eip155:8453",
  "asset": "USDC",
  "payTo": "your-wallet"
}

machine-readable: /api/route?network=base · /.well-known/x402 · /openapi.json · /api/reliability

The Base x402 marketplace

Activity

Sellers settling on Base

Browse Base-payable tools

Live public data

Skill packs

Crypto & onchain data

Web & documents

Data conversion

Text processing

Validation & parsing