ZeroWorker Web Action API
Avoid unnecessary browser launches with a lightweight preflight for AI agents. ZeroWorker inspects public pages before browser automation and returns static forms, field constraints, CAPTCHA/SPA signals, DNS/public-network safety checks, and a 3-state routing verdict: http_candidate, browser_likely, or undetermined. Use it to choose direct HTTP or escalate to a browser. No API key required. $0.003 USDC per successful request via x402 on Base Mainnet.
Offering
- Provider
- zeroworker-web-action-api.zeroworker-lab.workers.dev
- Method
- POST
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Web Search Research
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://zeroworker-web-action-api.zeroworker-lab.workers.dev/v1/preflight- MIME type
- Not provided
- First seen
- 2026-10-16T01:50:45.949Z
- Last seen
- Tags
- preflight, forms, AI-agents, web-automation, browser-automation
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.003 USDC
Atomic price: 3000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "3000",
"payTo": "0xad277cf8B5D9fa5008D06cBdBE349F5DF3c0Cc8f"
}
]Observed health
- Status
- Healthy
- Latest latency
- 1173 ms
- Average latency
- 1907 ms
- HTTP status
- 204
- Last checked
- Reachability
- 92.9% over 14 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"url": {
"description": "Absolute public HTTP(S) URL to inspect. Literal IPs, localhost/local hostnames, credentials, and non-standard ports are rejected.",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}Output schema
{
"properties": {
"example": {
"properties": {
"agentVerdict": {
"properties": {
"browserLikelyRequired": {
"description": "Backward-compatible boolean. True only for browser_likely; false also covers undetermined.",
"type": "boolean"
},
"confidence": {
"enum": [
"low",
"medium",
"high"
],
"type": "string"
},
"reasons": {
"items": {
"type": "string"
},
"type": "array"
},
"verdict": {
"description": "Preferred three-state routing result. Use this instead of inferring direct-HTTP suitability from browserLikelyRequired=false.",
"enum": [
"http_candidate",
"browser_likely",
"undetermined"
],
"type": "string"
}
},
"required": [
"verdict",
"browserLikelyRequired",
"confidence",
"reasons"
],
"type": "object"
},
"fetchedAt": {
"type": "string"
},
"finalUrl": {
"type": "string"
},
"forms": {
"items": {
"additionalProperties": true,
"type": "object"
},
"type": "array"
},
"http": {
"properties": {
"contentType": {
"type": "string"
},
"redirectCount": {
"minimum": 0,
"type": "integer"
},
"status": {
"type": "integer"
}
},
"required": [
"status",
"contentType",
"redirectCount"
],
"type": "object"
},
"limitations": {
"items": {
"type": "string"
},
"type": "array"
},
"networkSafety": {
"properties": {
"fetchDnsChecks": {
"minimum": 2,
"type": "integer"
},
"initialDnsCheck": {
"properties": {
"addressCount": {
"minimum": 1,
"type": "integer"
},
"allPublic": {
"type": "boolean"
},
"families": {
"items": {
"enum": [
4,
6
],
"type": "integer"
},
"type": "array"
}
},
"required": [
"addressCount",
"families",
"allPublic"
],
"type": "object"
},
"postFetchDnsPublicRecheck": {
"type": "boolean"
},
"redirectTargetsRechecked": {
"type": "boolean"
}
},
"required": [
"initialDnsCheck",
"fetchDnsChecks",
"redirectTargetsRechecked",
"postFetchDnsPublicRecheck"
],
"type": "object"
},
"page": {
"properties": {
"captchaMarkers": {
"items": {
"type": "string"
},
"type": "array"
},
"formsFound": {
"minimum": 0,
"type": "integer"
},
"iframeCount": {
"minimum": 0,
"type": "integer"
},
"scriptCount": {
"minimum": 0,
"type": "integer"
},
"spaMarkers": {
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"formsFound",
"scriptCount",
"iframeCount",
"spaMarkers",
"captchaMarkers"
],
"type": "object"
},
"requestedUrl": {
"type": "string"
}
},
"required": [
"requestedUrl",
"finalUrl",
"fetchedAt",
"http",
"networkSafety",
"page",
"forms",
"agentVerdict",
"limitations"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}