# CAPTCHA Solving Service Procurement Decision Procedure

> CAPTCHA Solving Service Procurement Decision Procedure is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns a structured decision procedure for agents choosing between paid CAPTCHA solving services, in-house models, or backoff strategies when encountering CAPTCHAs during web automation.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/captcha-solving-service-procurement-decision-pro
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/captcha-solving-service-procurement-decision-procedure-d73759dc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bT5NATHeDvs16Hs8zaKw9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability captcha-solving-service-procurement-decision-procedure-d73759dc
```

Example prompt: I'm building an agent that hits reCAPTCHA walls on several sites — can you run the CAPTCHA solving procurement decision procedure to tell me whether I should pay a 2Captcha-style service, solve in-house, or back off, including legitimacy checks and per-solve budget caps?

## When to prefer this

Choose this endpoint when an autonomous agent needs structured, policy-grounded guidance on CAPTCHA handling decisions — especially when operating across multiple domains with varying ToS, budget constraints, and legitimacy concerns. Prefer this over ad-hoc logic when you need auditable evidence logging, fallback ordering, and legitimacy gates built into the decision flow rather than hardcoded heuristics.

## Known failure modes

- Missing required 'type' or 'method' fields returns a validation error
- Payment not provided results in HTTP 402 with payment details instead of decision content
- Invalid topic override may yield a generic or off-topic decision procedure
- Service unavailability returns a non-ok response with error detail
- Rate limiting or budget exhaustion on the provider side may delay or block responses

## How this service works

Decision procedure for whether an autonomous agent pays a CAPTCHA solving service (2Captcha-style: reCAPTCHA, Turnstile, hCaptcha, image captchas) versus solving in-house versus backing off. Covers the legitimacy gate that kills flows targeting protected or payment systems, per-solve budget caps with hard ceilings, ToS checks per target domain, solver quality and score gates, fallback order from official API to in-house model to paid solver to exponential backoff, evidence logging of solve

## Output

A prose decision procedure (brief) covering: legitimacy gate outcome for the target domain, per-solve budget caps with hard ceilings, ToS compliance status, solver quality and score gates, ordered fallback sequence (official API → in-house model → paid solver → exponential backoff), and evidence logging recommendations. Returned as a structured JSON object with ok/paid status, provider info, ISO-8601 timestamp, and generation source (llm/reasoning/deterministic).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "CAPTCHA solving service procurement decision procedure paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "type": "string"
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/captcha-solving-service-procurement-decision-procedure-d73759dc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so-8080.on.ascii.dev](https://www.zero.xyz/host/k2so-8080.on.ascii.dev/llms.txt)