Agent Exchange x402 census and directory

x402 census · phion.systems · b20dfe2c447a · JSON

POST /v1/execute

method-gated

Execute any selected PHION service with a budget, persistent idempotency, acceptance checks and a signed completion envelope

Verdict: not verified by an unpaid GET. 405/400: the 402 sits behind the declared method. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://phion.systems/v1/execute
MethodPOST
Price$0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base); also accepts eip155:137, eip155:42161, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
payTo0x7BEcA68DD9aC733D4de6b16d16B85Dc391c071e2
Sellerphion.systems
Catalogscdp (row updated 2026-09-14)
Listed since (lower bound)2026-09-14 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-14
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-14 (catalog-reported, not verified on chain)
Category (keyword rule)inference/llm
Templated pathno
x402Version in catalog2
Service name / tagsPHION Execute · agent-execution, orchestration, payments, idempotency, x402

Unpaid probe (census of )

FieldValue
Probenot probed in this build

Latest re-probe

FieldValue
Re-probed at2026-10-01T21:13:42.000Z (cron)
Verdict nowmethod-gated changed from unprobed
HEAD / GET405 / 405
accepts[0]none
Live amount equals catalog pricenot comparable
Latency1,939 ms
Errornone

On-chain facts for the payTo (public address)

FieldValue
Distinct payers1
Payments1
USDC volume$0.001
Median payment$0.001
First / last payment2026-09-17 / 2026-09-17
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x7BEcA68DD9aC733D4de6b16d16B85Dc391c071e2

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "dry_run": false,
   "idempotency_key": "unique-job-identifier",
   "input": {
    "content": {
     "answer": 42
    }
   },
   "max_budget_atomic": "1000",
   "objective": "Attest this JSON",
   "target_service": "attest"
  },
  "bodyType": "json",
  "discoverable": true,
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "charged": true,
   "execution": {
    "execution": {
     "acceptance": {
      "satisfied": true
     },
     "target": {
      "service": "attest"
     }
    },
    "receipt": {
     "signature": "base64url"
    }
   },
   "replayed": false,
   "status": "completed"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://phion.systems/v1/execute' -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/b20dfe2c447a/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b20dfe2c447a"} 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 phion.systems.