The Sei x402 marketplace

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

An open index of the whole Sei 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 · 2026-10-28T11:24:23.000Z

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

·· RAIL MANIFEST ··SEI · PACIFIC-1
networkeip155:1329
wiresx402
assetUSDC
settled byan x402 facilitator
buyer gasnone, the buyer only signs
daily canary✓ settled 1h ago
agents: GET /api/route?q=<task>&network=sei
THIS SITEHOSTNOT RANKED, NOT COUNTED
outside buyers on Sei only
2 paid settlements, 30 days 1 distinct buyer, 30 days 2 paid settlements, since 2026-07-03 1 distinct buyer, 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
AllBaseSolanaPolygonArbitrumMonadCeloAvalancheSeiOptimismArcStellarAlgorandRobinhood 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
18
18 origins indexedone per originhost not counted
OUR TOOLS
625
OUR LATEST SETTLE
$0.001
our own canary or volume run
PRICE FLOOR
$0.001
SELLERS 18 + this host
# SELLER CALLS VOLUME BUYERS TOOLS Calls as a share of the top seller's
host agent402.tools ours, own runs incl. - - - 625 001 api.locus.report Locus API MPP dispatch via Base, Solana - - - 243 115 paid 002 deskcrew.io dispatch via Algorand - - - 166 003 api.syraa.fun Syra dispatch via Solana, Algorand - - - 132 129 paid 004 logicnodes.io LogicNodes dispatch via Solana - - - 112 46 paid 005 mesh.heurist.xyz Heurist Mesh no dispatch - - - 101 006 engedi.digi-life17.workers.dev dispatch via Solana - - - 94 70 paid 007 api.cra-agent.tech CRA AGENT data dispatch via Solana - - - 43 23 paid 008 cloud.trycorpus.ai corpusAI Cloud Pricing MPP no dispatch - - - 37 29 paid 009 priorseal.xyz PriorSeal API dispatch via Solana - - - 19 17 paid 010 x402-seller-pmlm.onrender.com Agent Research Tools dispatch via Solana - - - 16 011 pyd.fi Pro Yield API dispatch via Solana - - - 12 6 paid 012 www.watchevelive.com Eve — Polymarket paper picks no dispatch - - - 12 9 paid 013 api.getemboss.ai Emboss MPP no dispatch - - - 7 5 paid 014 www.quicknode.com Quicknode Agent API dispatch via Solana - - - 3 015 x402check.xyz dispatch via Solana - - - 3 016 www.attentioniscurrency.com attention is currency no dispatch - - - 52 017 x402helper.xyz x402 Helper API no dispatch - - - 3 018 merchant.payai.network no dispatch - - - 1
ACTIVITYTHIS HOST
all inbound USDC settlements to this host's Sei wallet
RAILSeiASSETUSDCSELLERS18 + this hostSCOPETHIS HOSTSCAN UNAVAILABLE? 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 Sei; pick a seller to scan its Sei wallet

Activity

activity scan temporarily unavailable - settlements remain independently verifiable on seiscan.io

Buy tools with USDC on Sei

624 of our 625 tools take USDC on Sei (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=sei

Sell on Sei

Accept the Sei CAIP-2 network (eip155:1329) in your 402 challenge; an x402 facilitator that supports Sei 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
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": "eip155:1329",
  "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=sei/.well-known/x402/openapi.json/api/reliability