x402 List

x402 Protocol Service Directory

x402 Shop ASR Audio Services

AI PAYMENT-READY

payment-ready until 2026-08-19

ASR audio services: transcribe a podcast feed (RSS) or any direct audio URL into a clean timestamped transcript, optionally with an AI summary (thesis, key points, verbatim quotes). Two modes: synthesis (transcript + summary, from $0.10/30-min block) and transcript (transcript only, from $0.06/30-min block). Exact USDC price quoted in the 402 challenge; pay per job on Base.

Pay from $0.01 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-08-09 · $1.21 all-time · settled via coinbase

BASE URL https://x402.stan01.xyz WEBSITE https://x402.stan01.xyz ENDPOINTS 1 NETWORK Base ASSET USDC MEMBER SINCE 2026-08-09 MONITORED SINCE 2026-08-09

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 94.6%
uptime 24h
0%
uptime 7d
94.6%
uptime 30d
94.6%
uptime 90d
94.6%
response p95
1178ms
avg response
726ms
total checks
240

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 (p42 in AI)
price (min)
$0.01
category percentile (min)
p42 in AI
endpoints / prices
1 / 1
model
flat
stability
0%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
48d
registrar
Porkbun LLC
hosting
custom
domain created
2026-06-22

Identity facts, not a risk score.

traction $1.21 30d · 1 buyers · top buyer 100%
volume 30d
$1.21
buyers 30d
1
settlements 30d
5
first settlement
2026-08-09
last settlement
2026-08-11
top buyer share
100% of 30d volume
trend 7d vs 30d
4.29x the 30d daily rate
networks
eip155:8453
volume all-time
$1.21
settlements all-time
5
median settlement 30d
$0.30
max settlement 30d
$0.50
settled via
coinbase ($1.21, 5 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

CHANGES

2 events, detecting since 2026-07-24

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes price changed 2d ago (2 since 2026-07-24)

price changed · 2d ago

POST /v1/terminal/asr · eip155:8453 · USDC: 30000010000

price changed · 4d ago

POST /v1/terminal/asr · eip155:8453 · USDC: 100000300000

Amounts are on-wire atomic units in the named asset.

see all changes for this service

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /v1/terminal/asr $0.01 Base USDC header
1 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /v1/terminal/asr returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i -X POST 'https://x402.stan01.xyz/v1/terminal/asr'
// 402 response (captured by monitor) · 1 payload · click to expand
[
  {
    "error": "payment_required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xD36115f7C29D3b3e01d238FEeEF7549F0B2D8c3E",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://x402.stan01.xyz/v1/terminal/asr",
      "tags": [
        "asr synthesis v1",
        "x402",
        "payment"
      ],
      "mimeType": "application/json",
      "description": "ASR: podcast feed or audio URL in → transcript + AI summary (synthesis) or transcript only (audio URL). MICRO pricing: ~$0.01 for a 2-min clip; $0.30/hr synthesis / $0.18/hr transcript. Send feed or audio_url for your exact 402.",
      "serviceName": "asr-synthesis-v1"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "tags": [
            "asr",
            "audio",
            "transcription",
            "speech-to-text",
            "podcast",
            "summarization",
            "x402"
          ],
          "input": {
            "body": {
              "content": "ASR audio services: transcribe a podcast feed or any audio URL. mode=synthesis adds an AI summary (thesis, key points, verbatim quotes, takeaways), mode=transcript returns a clean timestamped transcript only. Send feed (RSS) or audio_url (direct https media) plus max_eps. MICRO per-sec pricing (~$0.01 per 2-min clip; $0.30/hr synthesis, $0.18/hr transcript); exact USDC in the 402.",
              "pack_id": "default"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "job_id": "00000000-0000-0000-0000-000000000000",
              "status": "running"
            }
          },
          "resource_name": "ASR Podcast Synthesis & Audio Transcription (Whisper large-v3-turbo)"
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [],
                  "properties": {
                    "feed": {
                      "type": "string",
                      "format": "uri",
                      "description": "Podcast RSS URL (e.g. https://feeds.buzzsprout.com/1552180.rss)"
                    },
                    "mode": {
                      "enum": [
                        "synthesis",
                        "transcript"
                      ],
                      "type": "string",
                      "description": "synthesis = transcript + AI summary; transcript = transcript only"
                    },
                    "max_eps": {
                      "type": "integer",
                      "default": 1,
                      "maximum": 10,
                      "minimum": 1,
                      "description": "Max episodes (feed mode only)"
                    },
                    "audio_url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Direct https URL to any audio file (single-file job)"
                    },
                    "duration_secs": {
                      "type": "integer",
                      "minimum": 1,
                      "description": "Audio duration in seconds (audio_url; optional, else estimated from Content-Length)"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "job_id": {
                      "type": "string"
                    },
                    "status": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 90d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/x402-shop-asr-audio-services/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
08-12 · uptime 78.4% · 787ms avg08-13 · uptime 0.0%08-09 · uptime 100.0% · 920ms avg08-10 · uptime 100.0% · 738ms avg08-11 · uptime 100.0% · 671ms avg08-12 · uptime 78.4% · 787ms avg08-13 · uptime 0.0%08-0908-13
90d UPTIME 94.2%
RESPONSE TIME
08-09 · 920ms avg08-09 · 920ms avg08-10 · 738ms avg08-10 · 738ms avg08-11 · 671ms avg08-11 · 671ms avg08-12 · 787ms avg08-12 · 787ms avg08-13 · 0ms avg08-13 · 0ms avg08-0908-13
AVG RESP 726ms
PRICE (captured 402, USD)
08-09 · $0.1008-10 · $0.3008-11 · $0.0108-13 · $0.01$0.0108-0908-13
SUB-SCORES (uptime + x402 compliance)
08-09 compliance: 100% checks08-10 uptime: 100.0% compliance: 100% checks08-11 uptime: 100.0% compliance: 100% checks08-12 uptime: 95.8% compliance: 100% checks08-13 uptime: 94.6% compliance: 100% checksuptimecompliance08-0908-13

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
08-09 · $0.1008-10 · $0.8008-11 · $0.31peak $0.8008-0908-11
DISTINCT BUYERS
08-09 · 1 buyer08-10 · 1 buyer08-11 · 1 buyerpeak 1 buyer08-0908-11

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-11 · last up 2026-08-12

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
○ DOWN 107ms bad_status: unexpected HTTP 530
○ DOWN 98ms bad_status: unexpected HTTP 530
○ DOWN 115ms bad_status: unexpected HTTP 530
○ DOWN 106ms bad_status: unexpected HTTP 530
○ DOWN 76ms bad_status: unexpected HTTP 530
○ DOWN 141ms bad_status: unexpected HTTP 530
○ DOWN 626ms bad_status: unexpected HTTP 530
○ DOWN 340ms bad_status: unexpected HTTP 530
○ DOWN 198ms bad_status: unexpected HTTP 530
○ DOWN 472ms bad_status: unexpected HTTP 530
○ DOWN 236ms bad_status: unexpected HTTP 530
○ DOWN 488ms bad_status: unexpected HTTP 530
○ DOWN 605ms bad_status: unexpected HTTP 530
○ DOWN 224ms bad_status: unexpected HTTP 530
● OK 619ms
● OK 445ms
● OK 927ms
● OK 812ms

EMBED THIS BADGE

Show that x402 Shop ASR Audio Services is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

x402 Shop ASR Audio Services listed on x402-list
status
x402 Shop ASR Audio Services uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/x402-shop-asr-audio-services?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/x402-shop-asr-audio-services.svg" alt="x402 Shop ASR Audio Services listed on x402-list" height="28">
</a>
// Markdown
[![x402 Shop ASR Audio Services on x402-list](https://x402-list.com/badge/x402-shop-asr-audio-services.svg)](https://x402-list.com/services/x402-shop-asr-audio-services?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/x402-shop-asr-audio-services?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/x402-shop-asr-audio-services.svg?data=uptime" alt="x402 Shop ASR Audio Services uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/x402-shop-asr-audio-services/update.