x402 List

x402 Protocol Service Directory

●

Blixtworks img-categorize

AI

Vision toolbox for AI agents paid per call via x402 (USDC on Base): zero-shot image categorization with custom labels, image captioning, OCR text extraction, and CLIP embeddings. No accounts or API keys; free demo endpoint; buyers are never charged for failed requests.

Pay from $0.01 to $0.03 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-08-03 · no on-chain settlement recorded yet

BASE URL https://www.blixtworks.com │ WEBSITE https://www.blixtworks.com │ ENDPOINTS 4 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-08-03 │ MONITORED SINCE 2026-08-03

ASSESSMENT

updated 2h ago

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

reliability 100%
uptime 24h
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
209ms
avg response
209ms
total checks
1
compliance A (14/14)

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

jump to compliance checklist

price $0.01 to $0.03 (p53 in AI)
price (min)
$0.01
price (max)
$0.03
category percentile (min)
p53 in AI
category percentile (max)
p37 in AI
endpoints / prices
4 / 3
model
tiered
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
3d
registrar
InterNetX GmbH
hosting
custom
domain created
2026-07-30

Identity facts, not a risk score.

traction $0 30d · 0 buyers
volume 30d
$0
buyers 30d
0
settlements 30d
0
first settlement
---
last settlement
---
top buyer share
-
trend 7d vs 30d
-
networks
eip155:8453
volume all-time
$0
settlements all-time
0
median settlement 30d
$0
max settlement 30d
$0
settled via
-

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.

WHAT IT DOES

ai-derived

Provides AI-powered image processing services including captioning, categorization, OCR, and CLIP embeddings.

category
image-ai
in
query params
auth
none
image-processingaicaptioningcategorizationocrembeddings

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET
GET /caption $0.02 Base USDC
GET /categorize $0.02 Base USDC
GET /embed $0.01 Base USDC
GET /ocr $0.03 Base USDC
4 endpoints

REQUEST / RESPONSE EXAMPLE

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

// request
curl -i 'https://www.blixtworks.com/caption'
// 402 response (captured by monitor) · 4 payloads · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x161D9DFe071D024637f7cA8DB3D5FB0CE27833E1",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://www.blixtworks.com/categorize",
      "mimeType": "",
      "description": "Zero-shot image categorization (CLIP). POST {\"image\": \"<https url or data URI>\", \"labels\": [\"optional\", \"custom\"]} -> ranked labels with confidence scores."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x161D9DFe071D024637f7cA8DB3D5FB0CE27833E1",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://www.blixtworks.com/caption",
      "mimeType": "",
      "description": "Image captioning. POST {\"image\": \"<https url or data URI>\"} -> one-sentence natural-language description."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x161D9DFe071D024637f7cA8DB3D5FB0CE27833E1",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://www.blixtworks.com/ocr",
      "mimeType": "",
      "description": "OCR (English). POST {\"image\": \"<https url or data URI>\"} -> extracted text with confidence score."
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x161D9DFe071D024637f7cA8DB3D5FB0CE27833E1",
        "amount": "15000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://www.blixtworks.com/embed",
      "mimeType": "",
      "description": "CLIP image embedding. POST {\"image\": \"<https url or data URI>\"} -> 512-dim vector for similarity search."
    },
    "x402Version": 2
  }
]

OVER TIME

All charts share the 90d window selected here. Every series is also served as JSON at /api/v1/services/blixtworks-img-categorize/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
08-03 · uptime 100.0% · 179ms avg08-0308-03
90d UPTIME 100%
RESPONSE TIME
08-03 · 179ms avg08-03 · 179ms avg08-0308-03
AVG RESP 169ms
PRICE (captured 402, USD)
building price history ($0.02)

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
building assessment history (1 day so far)
VOLUME (on-chain settlement, USD)
no on-chain volume yet
DISTINCT BUYERS
no distinct buyers yet

COMPLIANCE

14/14 checks pass · grade A
  • 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 (7) · click to expand
TIME STATUS RESP
● OK 109ms
● OK 191ms
● OK 182ms
● OK 165ms
● OK 151ms
● OK 177ms
● OK 209ms
7 of 7 checks

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RUN THIS SERVICE?

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