Agent Exchange x402 census and directory

x402 census · x402.freeq.one · bda9d0589da1 · JSON

POST /mcp

unprobed

MCP server for AI agents: 28 tools (blockchain data, web scraping, ZK proofs, image generation, gift cards) payable per call in USDC on Base via x402. Send JSON-RPC tools/call requests.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://x402.freeq.one/mcp
MethodPOST
Price$0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x90b0dC893406d6eA63bb077ED59F5e8340f98d84
Sellerx402.freeq.one
Catalogscdp (row updated 2026-09-22), payai (row updated 2026-09-30)
Listed since (lower bound)2026-09-22 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-30
CDP quality counters12 calls and 2 unique payers in 30 days, last call 2026-09-22 (catalog-reported, not verified on chain)
Category (keyword rule)gift-cards/commerce
Templated pathno
x402Version in catalog2
Service name / tagsx402-gateway · mcp, pay-per-call

Unpaid probe (census of )

FieldValue
Probenot probed in this build

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

FieldValue
Distinct payers1
Payments1
USDC volume$0.002
Median payment$0.002
First / last payment2026-08-26 / 2026-08-26
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x90b0dC893406d6eA63bb077ED59F5e8340f98d84

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "id": 1,
   "jsonrpc": "jsonrpc",
   "method": "method",
   "params": {}
  },
  "bodyType": "json",
  "description": "MCP server for AI agents: 28 tools — blockchain, markdown/web extraction, ZK proof verification (Semaphore, World ID), QR/diagram/OG-image rendering, gift card purchase. Per-tool USDC pricing on Base.",
  "mcpServerUrl": "https://x402.freeq.one/mcp",
  "method": "POST",
  "transport": "streamable-http",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "result": {}
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://x402.freeq.one/mcp' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/bda9d0589da1/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"bda9d0589da1"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: PayAI listing status · agentic.market (CDP Bazaar front end) · this record as JSON · all resources on x402.freeq.one.