agentutility — paid x402 endpoints for autonomous agents

$ man agentutility

254 paid x402 endpoints for autonomous agents, organized into 9 product clusters. USDC-settled on Base. MCP-discoverable. ERC-8004 identified (agentId 47167). Built so an agent can find it, call it, pay for it — never a human in the loop.

NAME

agentutility — paid x402 endpoints for autonomous agents

SYNOPSIS

POST https://x402.agentutility.ai/<endpoint>
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { <input-properties> }

# first request → 402 with payment requirements
# sign USDC transferWithAuthorization, retry with X-PAYMENT header
# → response delivered in the same request lifecycle

DESCRIPTION

Every endpoint is a single HTTP POST behind an x402 paywall. No signup, no API key, no dashboard. The agent discovers it through the Coinbase x402 Bazaar, the MCP servers, or by resolving ERC-8004 agentId 47167.

Settlement happens in the same lifecycle as the response: the client signs a USDC transferWithAuthorization, the facilitator settles on-chain, the response comes back. Price per call: $0.001 – $0.30 USDC.

CLUSTERS — 9 product groups, 254 live endpoints

#	cluster	tagline	n	price/call	status
01	prooflayer	Trust + risk scanners for AI-built apps.	13	$0.005 – $0.25	● live
02	edgemarket	Onchain decisions agents can charge for.	37	$0.002 – $0.10	● live
03	edgefinance	TradFi signals at agent prices.	21	$0.002 – $0.10	● live
04	synthforge	Generative media for agents that ship products.	14	$0.01 – $0.30	● live
05	mediakit	One endpoint per format. Pay per call.	50	$0.002 – $0.20	● live
06	wordmint	Named LLM tasks. Minted at a sticker price.	48	$0.001 – $0.02	● live
07	webprobe	Inspect any website. Pay per look.	45	$0.001 – $0.05	● live
08	locale	Geo, weather, civic, identity primitives.	26	$0.001 – $0.05	● live
09	comppoint	Collectibles intelligence at agent speed.	–	–	○ spec

↳ each cluster is its own product with its own buyer. Tap any to see the full endpoint tariff.

ROUTES — three ways in

ROUTE I · DIRECT x402

raw HTTP

curl -X POST https://x402.agentutility.ai/secrets-exposure-check \
  -H 'Content-Type: application/json' \
  -d '{"repo":"vercel/next.js"}'

# → 402 Payment Required
# (sign USDC transferWithAuthorization, retry
#  with X-PAYMENT header)

ROUTE II · MCP · live

claude · cursor · codex

# 8 cluster packages on npm under
# @agentutility/mcp-*  (one per cluster)
#
# Catalog + install:
# https://mcp.agentutility.ai

ROUTE III · ERC-8004

on-chain discovery

# Identity Registry on Base
# resolve agentId 47167:
curl -X POST https://x402.agentutility.ai/agent-card-resolve \
  -d '{"agent_id":47167}'
# → full agent card with every
#   endpoint enumerated

DISCOVERY — machine-readable surfaces for crawlers + agents

resource	format	purpose
/llms.txt	text/markdown	curated link index for LLMs (the llms.txt proposal)
/llms-full.txt	text/markdown	full content snapshot — every cluster + endpoint inlined
/registry.json	application/json	canonical endpoint manifest, including schemas + tags
/endpoints.txt	text/plain	one endpoint per line — slug, price, URL
/catalog.txt	text/plain	full catalog with descriptions — grep-friendly
/sitemap.xml	application/xml	standard sitemap — every cluster + endpoint URL
/.well-known/agent.json	application/json	agent plugin manifest (ai-plugin.json shape)
/.well-known/security.txt	text/plain	security disclosure contact
/robots.txt	text/plain	explicit allow for AI crawlers (GPTBot, ClaudeBot, PerplexityBot, …)
bazaar.x402.org	external	official x402 directory — every endpoint is listed
ERC-8004 agentId 47167	on-chain	pure on-chain agent card resolution

WHY — three reasons agents call us

§ I agent-callable

Every endpoint is a single HTTP POST behind an x402 paywall. Discoverable through the Bazaar, our MCP server, and the ERC-8004 registry. No signups, no API keys, no dashboards.

§ II per-call pricing

$0.001 – $0.30 per call, settled in USDC on Base. No monthly minimum, no per-seat fee, no contract. Pay the meter only when the agent reads the meter.

§ III one substrate

From production-risk scanners to onchain market data to graded-card comps, every cluster speaks the same protocol. An agent that knows how to call one knows how to call them all.