# 17711 Smart Services > A fleet of independent, x402-payable microservices callable by AI agents. Every tool below is pay-per-call: an unpaid request returns HTTP 402 with the exact price and payment terms; pay in USDC through the x402 protocol and retry the same request. No account and no API key. ## How to use - Full machine-readable catalog (OpenAPI, with schemas and prices): https://api.17711.xyz/openapi.json - Payment discovery document (x402): https://api.17711.xyz/.well-known/x402 - POST tools take a JSON body, GET tools take query-string parameters; both return JSON. ## Paid tools - [address_risk_check_address](https://api.17711.xyz/registry/address-risk-service/v1/address-risk/check_address) (POST): Wallet address risk check: sanctioned address and phishing check for a crypto wallet or contract before you send funds, with theft, scam, mixer and blacklist flags ($0.005, x402) - [company_check_verify_company](https://api.17711.xyz/registry/company-check-service/v1/company-check/verify_company) (POST): Company check (KYB) and business verification: VAT validation (VIES), LEI lookup, registry status and company directors ($0.009, x402) - [company_profile_get_profile](https://api.17711.xyz/registry/company-profile-service/v1/company-profile/get_profile) (POST): Company profile and enrichment from a domain or a name: offering, public contacts, social links and WHOIS domain data as valid JSON ($0.009, x402) - [contact_finder_get_contacts](https://api.17711.xyz/registry/contact-finder-service/v1/contact-finder/get_contacts) (POST): Contact finder: public business emails, phone numbers, contact forms and support pages of a domain, with role and source ($0.009, x402) - [domain_security_get_report](https://api.17711.xyz/registry/domain-security-service/v1/domain-security/get_report) (POST): Domain security check: SSL certificate check, DMARC SPF check, DNSSEC, security headers and blocklist status with a score ($0.009, x402) - [emoji_match_suggest_emojis](https://api.17711.xyz/registry/emoji-match-service/v1/emoji-match/suggest_emojis) (POST): Emoji suggestion API: text in 18 languages in, the 1 to 5 best matching emoji out, deterministic and fast ($0.002, x402) - [extract_correct_parse_json](https://api.17711.xyz/registry/extract-correct-service/v1/extract-correct/parse_json) (POST): JSON repair API: extract valid JSON from messy text or model output and fix it against a JSON Schema ($0.006, x402) - [ip_blocklist_check_ip](https://api.17711.xyz/registry/ip-blocklist/v1/ip-blocklist/check) (GET): IP reputation check: is this IPv4 address on a public threat blocklist (Tor exit nodes, botnets, spam networks) ($0.010, x402) - [proxy_pool_get_best_proxy](https://api.17711.xyz/registry/proxy-pool/v1/proxy-pool/get_best_proxy) (GET): Free proxy API: get one fast, verified-alive proxy (HTTP, SOCKS) filtered by country, protocol and anonymity, for scraping ($0.010, x402) - [sanctions_check_screen_name](https://api.17711.xyz/registry/sanctions-check-service/v1/sanctions-check/screen_name) (POST): Sanctions check: OFAC list check and sanctions screening of a person or company name against OFAC SDN, EU and UN lists (AML KYC) ($0.01, x402) - [token_verdict_get_verdict](https://api.17711.xyz/registry/token-verdict-service/v1/token-verdict/get_verdict) (POST): Token verdict and security check: is this token safe? Honeypot, rug pull and scam detection with taxes, liquidity and admin powers ($0.01, x402) - [url_extract_get_structured_data](https://api.17711.xyz/registry/url-extract-service/v1/url-extract/get_structured_data) (POST): URL extract with a question: ask any web page a question and get structured data as JSON that matches your schema ($0.02, x402) - [websearch_search_web](https://api.17711.xyz/registry/websearch/v1/websearch/search_web) (POST): Web search API for agents: search the web and get result titles, URLs and snippets as JSON ($0.005, x402) ## Free helper tools - [catalog_category](https://api.17711.xyz/registry/catalog/v1/catalog/category) (GET): Lists every registration in one category, paginated (public GET) - [catalog_find_services_by_capability](https://api.17711.xyz/registry/catalog/v1/catalog/find_services_by_capability) (POST): Ranks registered services/tools by relevance to a free-text query - [catalog_search](https://api.17711.xyz/registry/catalog/v1/catalog/search) (GET): Ranks registered services/tools by relevance to a free-text query (public GET)