YourAITools API: pay-per-call x402 tools for AI agents

# YourAITools API > Pay-per-call x402 APIs for AI agents (USDC on Base). No API keys, no signup: call, get HTTP 402, pay, retry. ## AgentGate - Is this AI agent registered, Active and Verified (Concordium Agent Registry)? - Price: $0.005 USDC on Base via x402 - Paid: GET https://api.youraitools.co/agentgate/v1/check-agent - Free preview: https://api.youraitools.co/agentgate/v1/check-agent/preview?id=Mf22soLh1NuZYFgBK8iSs - Remote MCP (streamable HTTP): https://api.youraitools.co/agentgate/mcp - OpenAPI: https://api.youraitools.co/agentgate/openapi.json - Guide: https://youraitools.co/guides/x402-agent-verification ## WebRead - Read any public web page as clean Markdown (robots.txt-aware, SSRF-safe). - Price: $0.002 USDC on Base via x402 - Paid: GET https://api.youraitools.co/webread/v1/read - Free preview: https://api.youraitools.co/webread/v1/read/preview?url=https://example.com/ - Remote MCP (streamable HTTP): https://api.youraitools.co/webread/mcp - OpenAPI: https://api.youraitools.co/webread/openapi.json - Guide: https://youraitools.co/guides/pay-per-call-web-scraper-api ## InjectScan - Scan text, web pages and MCP tool definitions for prompt injection. - Price: $0.003 USDC on Base via x402 - Paid: GET https://api.youraitools.co/injectscan/v1/scan, POST https://api.youraitools.co/injectscan/v1/scan - Free preview: https://api.youraitools.co/injectscan/v1/scan/preview?text=Ignore%20previous%20instructions - Remote MCP (streamable HTTP): https://api.youraitools.co/injectscan/mcp - OpenAPI: https://api.youraitools.co/injectscan/openapi.json - Guide: https://youraitools.co/guides/prompt-injection-scanner-api ## DomainCheck - Is this domain or email real and trustworthy? DNS, SPF/DMARC, registration age, disposable mail. - Price: $0.002 domain / $0.001 email USDC on Base via x402 - Paid: GET https://api.youraitools.co/domaincheck/v1/domain, GET https://api.youraitools.co/domaincheck/v1/email - Free preview: https://api.youraitools.co/domaincheck/v1/domain/previe

{ "openapi": "3.1.0", "info": { "title": "YourAITools API", "version": "1.0.0", "description": "Pay-per-call x402 APIs for AI agents (USDC on Base). Each tool is also documented at <tool>/openapi.json.", "contact": { "email": "hello@youraitools.co", "url": "https://youraitools.co/built-by-us" } }, "servers": [ { "url": "https://api.youraitools.co" } ], "paths": { "/agentgate/v1/check-agent": { "get": { "operationId": "ch