The Arbitrum x402 marketplace

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

START HERE · BUYER PATH

An open index of the whole Arbitrum 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.

live receipts temporarily unavailable - settlements remain verifiable at arbiscan.io

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

·· RAIL MANIFEST ··ARBITRUM · MAINNET
networkeip155:42161
wiresx402
assetUSDC
settle latency~2 seconds
facilitatorPayAI
gassponsored
daily canaryunavailable
agents: GET /api/route?q=<task>&network=arbitrum
THIS SITE · HOST · NOT RANKED, NOT COUNTED
outside buyers on Arbitrum only
0 settlements, 30 days 0 distinct buyers, 30 days 0 settlements, all time 0 distinct buyers, all time

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.

tools → why pay here → every settlement →
Chain
AllBaseSolanaPolygonArbitrumMonadCeloAvalancheSeiOptimismStellarAlgorandRobinhood Chain
Sort
SELLERS LISTED
62
distinct payees · 160 endpoints indexed
TOOLS (THIS HOST)
551
LATEST SETTLE
-
PRICE FLOOR
$0.001

Activity

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

Sellers settling on Arbitrum

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

Base Sentinel THIS HOST base-sentinel-production.up.railway.app 551 tools live AgentWorld — AI Agent Economy & Invention API agentworld.me 79 tools · 43 paid · 79 tx healthy api.getplexa.com api.getplexa.com 4 tools · 42 tx healthy google-trends.use.x402atlas.com google-trends.use.x402atlas.com 4 tools · 26 tx healthy websearch.use.x402atlas.com websearch.use.x402atlas.com 3 tools · 25 tx healthy x402.openwebninja.com x402.openwebninja.com 369 tools · 12 tx healthy x402 Protected Content x402tap.com 20 tools · 10 tx unreachable OnchainPulse onchainpulse.theaslangroupllc.com 29 tools · 28 paid · 9 tx · +75 more endpoints healthy Bitrefill x402 api.bitrefill.com 11 tools · 8 paid · 8 tx healthy api.dexl.io api.dexl.io 9 tools · 7 tx · +1 more endpoint healthy 402rates.com api.402rates.com 3 tools · 6 tx unreachable agent-arcade.use.x402atlas.com agent-arcade.use.x402atlas.com 10 tools · 4 tx · +17 more endpoints healthy GEDX402 Firecrawl browser.gedx402.com 36 tools · 34 paid · 3 tx · +2 more endpoints healthy hotels.use.x402atlas.com hotels.use.x402atlas.com 4 tools · 2 tx · +1 more endpoint healthy PayanAgent Marketplace payanagent.com 656 tools · 1 tx · +1 more endpoint healthy xmedia.use.x402atlas.com xmedia.use.x402atlas.com 1 tool · 1 tx healthy NodeFlare rpc.nodeflare.app 18 tools · 1 tx unreachable x402 web tools api.agentstools.dev 458 tools · 355 paid healthy api.xona-agent.com api.xona-agent.com 133 tools · 131 paid healthy engedi.digi-life17.workers.dev engedi.digi-life17.workers.dev 94 tools healthy Locus API api.locus.report 82 tools · 76 paid healthy market2000.xyz market2000.xyz 74 tools · 55 paid healthy api.carbon-cashmere.de api.carbon-cashmere.de 59 tools healthy attention is currency www.attentioniscurrency.com 53 tools healthy DeFi Intel Gateway defi-intel-agent-gateway.gg-neo15.workers.dev 45 tools healthy x402.asterpay.io x402.asterpay.io 39 tools · 27 paid healthy EU Compliance Tools for AI Agents api.eucompliance.tools 37 tools healthy gate402.app gate402.app 36 tools healthy Hyrule Cloud cloud.hyrule.host 34 tools healthy defillama.use.x402atlas.com defillama.use.x402atlas.com 30 tools healthy SENTINEL sentinel-agent-wru6.onrender.com 26 tools healthy SENTINEL sentinel-agent.dev 26 tools healthy marketdata.use.x402atlas.com marketdata.use.x402atlas.com 23 tools healthy Munition API api.munition.io 23 tools healthy twitter.use.x402atlas.com twitter.use.x402atlas.com 21 tools healthy FastPath Bitcoin API api.nativebtc.org 18 tools · 17 paid healthy mcp.barker.money mcp.barker.money 11 tools healthy hyperliquid.use.x402atlas.com hyperliquid.use.x402atlas.com 9 tools healthy socialintel.dev socialintel.dev 8 tools · 3 paid healthy hyperliquid-accounts.use.x402atlas.com hyperliquid-accounts.use.x402atlas.com 7 tools healthy appstore.use.x402atlas.com appstore.use.x402atlas.com 7 tools · +1 more endpoint healthy hosaka-agents.vercel.app hosaka-agents.vercel.app 6 tools healthy dns.use.x402atlas.com dns.use.x402atlas.com 6 tools healthy coingecko.use.x402atlas.com coingecko.use.x402atlas.com 6 tools healthy perpsignals.use.x402atlas.com perpsignals.use.x402atlas.com 3 tools healthy search.reversesandbox.com search.reversesandbox.com 3 tools healthy hyperliquid-predict.use.x402atlas.com hyperliquid-predict.use.x402atlas.com 2 tools healthy gdelt.use.x402atlas.com gdelt.use.x402atlas.com 2 tools healthy email-auth.use.x402atlas.com email-auth.use.x402atlas.com 1 tool healthy headers.use.x402atlas.com headers.use.x402atlas.com 1 tool healthy unwrap.use.x402atlas.com unwrap.use.x402atlas.com 1 tool healthy wiki.use.x402atlas.com wiki.use.x402atlas.com 1 tool healthy ssl.use.x402atlas.com ssl.use.x402atlas.com 1 tool healthy imgopt.use.x402atlas.com imgopt.use.x402atlas.com 1 tool healthy StableJack ai.stable-jack.com 59 tools unreachable Concierge Agent conc-exe.xyz 8 tools unreachable trustdex.app trustdex.app 6 tools unreachable www.watchevelive.com www.watchevelive.com 4 tools unreachable pulse-api-production-7aae.up.railway.app pulse-api-production-7aae.up.railway.app 2 tools unreachable QuokkaPix Agent Unlock quokkapix.com 1 tool unreachable agent.gexlog.com agent.gexlog.com 1 tool unreachable dlf-gateway.agentlabel.workers.dev dlf-gateway.agentlabel.workers.dev 1 tool unreachable

Browse Arbitrum-payable tools

Live public data

+ 99 more in the full catalog

Crypto & onchain data

+ 93 more in the full catalog

Skill packs

+ 68 more in the full catalog

LLM gateway

+ 38 more in the full catalog

Web & documents

+ 34 more in the full catalog

Data conversion

+ 22 more in the full catalog

Validation & parsing

URL parse$0.001
IP info$0.002
+ 13 more in the full catalog

Network & domains

+ 12 more in the full catalog

Text processing

Slugify$0.001
Text diff$0.002
+ 12 more in the full catalog

Payments & x402

Gas price$0.002
+ 11 more in the full catalog

AI & compute

+ 9 more in the full catalog

Encoding & crypto

Hash$0.001
HMAC$0.001
Base64$0.001
Hex$0.001
+ 8 more in the full catalog

agents: GET https://base-sentinel-production.up.railway.app/api/route?q=<task>&network=arbitrum

Sell on Arbitrum

Accept the Arbitrum CAIP-2 network (eip155:42161) in your 402 challenge - the PayAI facilitator verifies and settles, gas sponsored. 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": "eip155:42161",
  "asset": "USDC",
  "payTo": "your-wallet"
}

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