The Sei x402 marketplace

Pay-per-call tools for AI agents - settled in USDC on Sei in ~1 second, 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 (CDP Bazaar 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 · 2026-10-09T07:30:36.000Z

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

·· RAIL MANIFEST ··SEI · PACIFIC-1
networkeip155:1329
wiresx402
assetUSDC
settle latency~1 second
facilitatorPayAI
buyer gasnone, the buyer only signs
daily canary✓ settled 9h ago
agents: GET /api/route?q=<task>&network=sei
THIS SITE · HOST · NOT RANKED, NOT COUNTED
outside buyers on Sei only
0 settlements, 30 days 0 distinct buyers, 30 days 0 settlements, since 2026-07-03 0 distinct buyers, since 2026-07-03

Agent402 runs this index and sells 500+ tools, metered models and reports on the same rails. Our own canary and volume runs are excluded from these figures; 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
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healthy = the last crawl of the origin succeeded, nothing more. dispatch = this host's router will buy from this seller right now; a seller can be listed, healthy and still not dispatch-eligible (no known payment network, or no settlement history on Base yet). The reason is on each row and on /api/index as routerDispatchReason.

SELLERS LISTED
12
one per origin · host not counted · 12 origins indexed
TOOLS (THIS HOST)
609
OUR LATEST SETTLE
$0.001
our own canary or volume run
PRICE FLOOR
$0.001
SELLERS 12 + this host
# SELLER CALLS VOLUME BUYERS TOOLS Share of the busiest seller listed
001 agent402.tools - - - 609 002 api.locus.report - - - 232 003 deskcrew.io - - - 165 004 api.syraa.fun - - - 139 005 mesh.heurist.xyz - - - 101 006 engedi.digi-life17.workers.dev - - - 94 007 www.attentioniscurrency.com - - - 52 008 cloud.trycorpus.ai - - - 37 009 www.watchevelive.com - - - 13 010 x402-seller-pmlm.onrender.com - - - 12 011 www.quicknode.com - - - 3 012 x402check.xyz - - - 3 013 x402helper.xyz - - - 5
ACTIVITYTHIS HOST
all inbound USDC settlements to this host's Sei wallet
RAILSeiASSETUSDCSELLERS12 + this hostSCOPETHIS HOSTSCAN UNAVAILABLE? keys

Activity

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

Sellers accepting Sei

pick a seller to scope the activity charts · THIS HOST = run by agent402 · every other seller is independent, found by the open crawl · per-seller settlement counts are measured on Base only, so this roster shows none for Sei; pick a seller to scan its Sei wallet

Agent402.Tools (agent402.base.eth) THIS HOST agent402.tools 609 tools live Locus API MPP api.locus.report 232 tools · 112 paid healthy dispatch deskcrew.io deskcrew.io 165 tools healthy dispatch Syra api.syraa.fun 139 tools · 134 paid healthy dispatch Heurist Mesh mesh.heurist.xyz 101 tools healthy no dispatch · settlement required engedi.digi-life17.workers.dev engedi.digi-life17.workers.dev 94 tools · 70 paid healthy dispatch attention is currency www.attentioniscurrency.com 52 tools healthy dispatch corpusAI Cloud Pricing MPP cloud.trycorpus.ai 37 tools · 29 paid healthy dispatch Eve — Polymarket paper picks www.watchevelive.com 13 tools · 10 paid healthy no dispatch · settlement required Agent Research Tools x402-seller-pmlm.onrender.com 12 tools healthy dispatch Quicknode Agent API www.quicknode.com 3 tools healthy dispatch x402check.xyz x402check.xyz 3 tools healthy dispatch x402helper.xyz x402helper.xyz 5 tools unreachable no dispatch · crawl failed

Buy tools with USDC on Sei

608 of the 609 tools in the catalog 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 - the PayAI facilitator verifies and settles native Circle USDC. 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
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": "eip155:1329",
  "asset": "USDC",
  "payTo": "your-wallet"
}

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