UnblockAPI

One API for everything AI agents can't do. Captcha solving, browser rendering, temp email, SMS verification, screenshots, and web search — all through a single API key with flat dollar pricing.

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Why UnblockAPI?

AI agents are getting smarter, but the web was built for humans. Every autonomous agent hits the same walls:

Roadblock	Your Agent	UnblockAPI
Captchas	❌ Can't solve	✅ 40+ types, $0.10
JS-only pages	❌ Empty <div>	✅ Headless Chromium, $0.05
Email verification	❌ No inbox	✅ Temp inbox, $0.05
SMS verification	❌ No phone	✅ Temp numbers, $0.50
Visual checks	❌ No eyes	✅ Screenshots, $0.05
Web search	❌ No internet	✅ DuckDuckGo, $0.05

Six services, one API key, flat pricing. No credits to convert, no tiers to track.

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Quick Start (30 seconds)

# 1. Get a free API key (no email required, 5 free calls)
curl -X POST https://api.unblockapi.com/api/v1/account/register/anonymous

# 2. Use it immediately
curl -X POST https://api.unblockapi.com/api/v1/screenshot \
  -H "Content-Type: application/json" \
  -H "X-API-Key: ub_YOUR_KEY" \
  -d '{"url": "https://example.com"}'

# 3. Solve a captcha
curl -X POST https://api.unblockapi.com/api/v1/captcha/solve \
  -H "Content-Type: application/json" \
  -H "X-API-Key: ub_YOUR_KEY" \
  -d '{"type":"recaptcha_v2","site_key":"SITE_KEY","site_url":"https://example.com"}'

Full API documentation →

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Services

🤖 Captcha Solving — POST /api/v1/captcha/solve

40+ captcha types: reCAPTCHA v2/v3, hCaptcha, Turnstile, FunCaptcha, GeeTest, Cloudflare, and more. One flat price: $0.10/solve.

🌐 Browser Rendering — POST /api/v1/browser/fetch

Headless Chromium. Extract JS-rendered HTML or plain text from SPAs and dynamic sites. $0.05/fetch.

📧 Temp Email — POST /api/v1/email/generate

Disposable inboxes for account verification. Create, poll, and auto-destroy. $0.05/inbox.

📱 SMS Verification — POST /api/v1/sms/number

Rent temporary phone numbers to receive SMS codes. Supports Google, WhatsApp, Telegram, and more. $0.50/number.

📸 Screenshots — POST /api/v1/screenshot

Full-page PNG/JPEG captures including JS-rendered content. $0.05/shot.

🔍 Web Search — POST /api/v1/search

Structured search results via DuckDuckGo. $0.05/search.

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MCP Server — Native AI Agent Integration

UnblockAPI ships an MCP (Model Context Protocol) server with 11 tools. Claude Desktop, Cursor, and any MCP-compatible agent can call UnblockAPI as native tools — no HTTP integration needed.

{
  "mcpServers": {
    "unblockapi": {
      "command": "python",
      "args": ["-m", "mcp_server.server"],
      "env": {
        "UNBLOCK_API_KEY": "ub_your_key",
        "UNBLOCK_API_URL": "https://api.unblockapi.com"
      }
    }
  }
}

11 MCP tools: unblock_screenshot, unblock_browser_fetch, unblock_search, unblock_solve_captcha, unblock_email_generate, unblock_email_inbox, unblock_sms_number, unblock_sms_check, unblock_sms_wait, unblock_pricing, unblock_account.

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Pricing

Service	Cost	Details
Captcha Solve	$0.10	Any of 40+ types
Browser Render	$0.05	Headless Chromium, full JS/SPA
Temp Email	$0.05	Create + read + destroy
SMS Temp Number	$0.50	Rent number, receive codes
SMS Rent + Wait	$1.00	Orchestrated one-shot flow
Screenshot	$0.05	Full-page PNG/JPEG
Web Search	$0.05	DuckDuckGo results

Deposit tiers with bonus calls:

• $1 — no bonus
• $5 — +5 bonus calls
• $20 — +20 bonus calls (best value)
• $100 — +50 bonus calls

First 5 calls free. No credit card required. Pay with Stripe (cards, stablecoins) or x402 protocol.

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Integration Examples

Python (httpx)

import httpx

async def solve_captcha(site_key, url):
    async with httpx.AsyncClient() as client:
        r = await client.post(
            "https://api.unblockapi.com/api/v1/captcha/solve",
            json={"type": "recaptcha_v2", "site_key": site_key, "site_url": url},
            headers={"X-API-Key": "ub_YOUR_KEY"}
        )
        return r.json()["token"]

LangChain Tool

from langchain.tools import BaseTool
import httpx

class CaptchaSolver(BaseTool):
    name = "solve_captcha"
    description = "Solve reCAPTCHA/hCaptcha/Turnstile captchas"

    def _run(self, site_url, site_key, captcha_type="recaptcha_v2"):
        r = httpx.post(
            "https://api.unblockapi.com/api/v1/captcha/solve",
            json={"type": captcha_type, "site_key": site_key, "site_url": site_url},
            headers={"X-API-Key": "ub_YOUR_KEY"}
        )
        return r.json()["token"]

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Links

• Website: unblockapi.com
• API Docs: api.unblockapi.com/docs
• Blog: unblockapi.com/blog.html
• Postman Collection: tmp/postman-collection.json

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Built for AI agents. By developers who got tired of integrating five different APIs.