The Polygon x402 marketplace

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

START HERE · BUYER PATH

auto-route a task →plan a multi-step job → try playground browse sellers

An open index of the whole Polygon x402 economy - this host plus every independent seller the crawl finds (the x402 Bazaar discovery listing included), each re-probed every 30 minutes. Not a walled market: other venues' listings appear here too.

Our latest own settlement (canary): $0.001 USDC · on-chain receipt · 2026-10-28T19:38:08.000Z

A paid canary buys tools over the Polygon rail daily - uptime proven with real settlements, not pings.

·· RAIL MANIFEST ··POLYGON · MAINNET

networkeip155:137

wiresx402

assetUSDC

settled byan x402 facilitator

buyer gasnone, the buyer only signs

explorerpolygonscan.com →

daily canary✓ settled 8h ago

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

THIS SITEHOSTNOT RANKED, NOT COUNTED

outside buyers on Polygon only

716 paid settlements, 30 days 5 distinct buyers, 30 days 794 paid settlements, since 2026-07-03 8 distinct buyers, since 2026-07-03

Agent402 runs this index and sells 500+ tools, metered models and reports on the same rails. These figures count paid settlements from outside buyers only: our own canary and volume runs and free proof-of-work calls are left out. The ranked rows measure other sellers on chain and never include the host. Settlements are counted from the sales ledger, which starts 2026-07-03; earlier calls were served and settled but are not itemised in it, so these are not lifetime totals.

tools → why pay here → every settlement →

Chain

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

healthy = the last crawl of the origin succeeded, nothing more. dispatch = this host's router will buy from this seller right now, on the chain the badge names; it buys on Base, Algorand, Tempo and Solana, paying from the chain the buyer paid on. A seller can be listed, healthy and still not dispatch-eligible (for example: the last crawl failed, it accepts no chain the router pays on, or it has too little settlement history yet). The reason is on each row and on /api/index as routerDispatchReason.

SELLERS LISTED

553

553 origins indexedone per originhost not counted

OUR TOOLS

625

OUR LATEST SETTLE

$0.001

our own canary or volume run

PRICE FLOOR

$0.001

# SELLER CALLS VOLUME BUYERS TOOLS Calls as a share of the top seller's

ACTIVITYTHIS HOST · 30D

TRANSACTIONS-17.0%

774

VOLUME+40.0%

$5.47

BUYERS+11.1%

all inbound USDC settlements to this host's Polygon wallet

RAILPolygonASSETUSDCSELLERS400 of 553 + this hostSCOPETHIS HOSTSCAN COMPLETEWINDOW30D? keyboard shortcuts

pick a seller to scope the activity panel · the host row is ours and says so · every other seller is independent, found by the open crawl · per-seller settlement counts are measured on Base only, so the calls, volume and buyers columns show none for Polygon; pick a seller to scan its Polygon wallet

showing the top 400 of 553 sellersshow all →

Activity

THIS HOST · PAST 30 DAYS

TRANSACTIONS

774

VOLUME

$5.47

BUYERS

all inbound USDC settlements to this host's Polygon wallet · includes 53 internal canary buys

Buy tools with USDC on Polygon

624 of our 625 tools take USDC on Polygon (1 tool is offered on Base only), from $0.001 to $3.30 a call, across crypto & onchain data, live public data, skill packs, web & documents, llm gateway, data conversion and more. The catalog page carries the category browser; this page is the chain's ledger.

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

Sell on Polygon

Accept the Polygon CAIP-2 network (eip155:137) in your 402 challenge; an x402 facilitator that supports Polygon verifies and settles each payment. Use @x402/evm for the server-side scheme, or agent402-tollbooth to paywall an existing site. Then serve /.well-known/x402 and list it on /sell (free): the index crawler picks it up, and rows here are ordered by settled calls, then crawl health. 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. Rows are ordered by settled calls, then crawl health.

402 challenge · accepts[]JSON

{
  "scheme": "exact",
  "network": "eip155:137",
  "amount": "1000",
  "asset": "<USDC token contract address>",
  "payTo": "<your wallet>"
}

amount is in the token's smallest unit (6 decimals: 1000 = $0.001); asset is the token's on-chain id. For a live accept on this chain: curl -i https://agent402.tools/api/hash?text=hi

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