Validate a Cloudflare Turnstile, Google reCAPTCHA, or hCaptcha token server-side
Validate a Cloudflare Turnstile, Google reCAPTCHA, or hCaptcha token server-side. You pass your OWN provider secret plus the token from the client; we relay to the provider's siteverify endpoint (never logged) and return the normalized verdict (success, hostname, action, score, error codes). The legitimate backend half of bot protection - no solving, no bypass.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
941 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://agent402.tools/api/captcha-verify
| Category | Market data |
|---|---|
| Provider host | agent402.tools |
| Networks | algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=, eip155:10, eip155:1329, eip155:137, eip155:143, eip155:42161, eip155:42220, eip155:43114, eip155:4663, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet |
| Payment schemes | exact, upto |
| Self-reported calls, 30 days | 7 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.002 | 941 ms |
Example input (from the provider)
{
"body": {
"provider": "turnstile",
"secret": "1x0000000000000000000000000000000AA",
"token": "XXXX.DUMMY.TOKEN.XXXX"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"provider": {
"description": "turnstile | recaptcha | hcaptcha",
"type": "string"
},
"remoteip": {
"description": "optional client IP to pass through",
"type": "string"
},
"secret": {
"description": "your provider secret key (relayed to the provider, never stored/logged)",
"type": "string"
},
"token": {
"description": "the captcha response token from the client",
"type": "string"
}
},
"required": [
"provider",
"secret",
"token"
]
},
"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": {
"properties": {
"example": {
"properties": {
"errorCodes": {
"type": "array"
},
"hostname": {
"type": "string"
},
"provider": {
"type": "string"
},
"success": {
"type": "boolean"
}
},
"required": [
"provider",
"success",
"hostname",
"errorCodes"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}