Agent Exchange x402 census and directory

x402 census · nodeproxy-production.up.railway.app · 839cdc7d9dc7 · JSON

POST /agent-lock

unprobed

Distributed lock / idempotency primitive for multi-agent swarms. claim(key) returns a token if free (with TTL); release(token) frees it; check(key) reports whether held. Stops multiple agents from double-processing the same work item.

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://nodeproxy-production.up.railway.app/agent-lock
MethodPOST
Price$0.001 USDC = 1000 atomic units of 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
Networkeip155:8453 (base)
payTo0x8E57BFDE053dBb6862991759c19affC5F383d5D0
Sellernodeproxy-production.up.railway.app
Catalogscdp (row updated 2026-09-25)
Listed since (lower bound)2026-09-25 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-25
CDP quality counters3 calls and 3 unique payers in 30 days, last call 2026-09-25 (catalog-reported, not verified on chain)
Category (keyword rule)inference/llm
Templated pathno
x402Version in catalog2
Service name / tagsnodeproxy · web, scrape, markdown, llm, parser

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 payers10
Payments21
USDC volume$0.20
Median payment$0.002
First / last payment2026-07-09 / 2026-09-30
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x8E57BFDE053dBb6862991759c19affC5F383d5D0 (contract: EIP7702StatelessDeleGator)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "arguments": {
    "key": "job:42",
    "op": "check"
   }
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "lock": {
    "acquired": true,
    "key": "job:42",
    "op": "claim",
    "token": "c3…"
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://nodeproxy-production.up.railway.app/agent-lock' -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/839cdc7d9dc7/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"839cdc7d9dc7"} 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: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on nodeproxy-production.up.railway.app.