call402 — x402 Agent Services

Read-only aggregated listings from Superteam, Verdikta, poidh, and Agent Bounties, plus recent awarded bounties from public Verdikta and poidh data. Returns cached jobs, freshness status, and a source disclaimer.

Self-computed long-tail EVM token quotes from public on-chain DEX pools on Base, BNB Smart Chain and Ethereum. Discovers Uniswap V2/V3 and PancakeSwap pools with eth_call; majors are excluded. V3 depth is estimated. Informational only.

Domain one-stop lookup: live DNS records (A, AAAA, CNAME, MX, NS, TXT via DNS-over-HTTPS) plus RDAP registration data (registrar, creation and expiry dates, status, nameservers) assembled from public protocol endpoints on our servers. For domain due diligence, phishing-site checks, counterparty infrastructure review and integration pre-checks.

Email address validation for signup screening, lead cleanup and form verification: syntax check, disposable/temporary-domain detection and a live MX-record lookup for the domain. Returns a deliverability verdict (likely_deliverable, risky, undeliverable, invalid_format) with the MX hosts found. Does not probe individual mailboxes, so catch-all domains may still accept addresses that do not exist.

Crypto Fear & Greed Index by alternative.me: current value (0-100) and classification (Extreme Fear, Fear, Neutral, Greed, Extreme Greed) plus optional daily history. The most-cited single market-sentiment gauge for crypto trading agents: position sizing, risk checks and regime detection before trading. Data published by alternative.me for free commercial use with attribution; served from a 30-minute cache.

Live foreign-exchange reference rates from the European Central Bank (ECB), updated every business day. Convert between 30+ currencies (USD, EUR, GBP, JPY, CNY and more) with a single call: pass base and symbols, get mid-market reference rates as clean JSON. Rates are the ECB daily reference rates, the same source banks and accounting tools cite. Free reference data, republished with attribution.

Run local cryptographic utilities: SHA-256 and SHA-512 hashes, Base64 encode/decode, or a random UUID v4. No upstream service is called.

Text-to-image generation for AI agents, powered by fal.ai (Flux Schnell): send a prompt and get a generated image URL in seconds, for thumbnails, illustrations, mockups and visual assets inside agent workflows. The model is fixed server-side to fal-ai/flux/schnell so the per-call price always holds. No fal.ai account, API key or subscription needed: pay per call in USDC via x402.

Detect the most likely language of text entirely on this server, with ISO 639-1 language code, language name, confidence and alternatives. Supports English, Chinese, Japanese, Korean, Spanish, French, German, Russian, Portuguese and Italian; no upstream request.

Parse a phone number locally against the numbering plan using libphonenumber metadata. Returns format and number-plan validity only; current network assignment and subscriber status are not queried. data_source = "numbering plan (libphonenumber)".

Generate a QR code image for any text, URL or payment address: returns SVG markup or a base64-encoded PNG rendered on our own servers (qrcode library, MIT). For agents that produce scannable payment requests, links, addresses or tickets but cannot render images themselves.

Time series of Robinhood Chain (chainId 4663) stock-token spreads for one symbol: 5-minute samples of the on-chain pool price (v3, with v4 cross-check), pool liquidity in USD, and the percentage spread versus the US-listed reference quote. Derived fields only; the reference quote itself is not included. Coverage starts 2026-10-23. The window ends at the latest available sample and can reach back up to 720 hours. Samples cover US market open and closed hours. For research and market-structure analysis of tokenized stocks.

Latest Robinhood Chain (chainId 4663) stock-token spread snapshot for 12 tokenized US stocks and ETFs (NVDA, TSLA, AAPL, MSFT, AMZN, META, GOOGL, AMD, COIN, PLTR, SPY, QQQ): on-chain Uniswap v3 pool price with a v4 cross-check price, pool liquidity in USD, and the percentage spread of the token price versus the US-listed reference quote, sampled every 5 minutes. Only derived fields are returned; the reference quote itself is not included. Sampling continues while US markets are closed. The response reports the sample timestamp, data age in seconds and a stale flag. Each symbol entry also includes trailing-24-hour spread statistics (min, max, average and sample count). For monitoring and research, not an execution feed.

Live web search for AI agents, powered by Brave Search: send a natural-language query and get ranked results with titles, URLs, descriptions and result age from Brave's independent web index, ready to cite, summarize or read further. For research, fact-checking, news and docs lookups, price and competitor checks inside agent workflows. No Brave account, API key or subscription needed: pay per call in USDC via x402.

Live web search for AI agents, powered by Tavily: send a natural-language query and get ranked results with titles, URLs, content snippets and relevance scores, built for research agents, fact-checking and RAG pipelines inside agent workflows. Search depth is fixed to basic server-side (one credit per call) so the per-call price always holds. No Tavily account, API key or subscription needed: pay per call in USDC via x402.

Summarize a US public company's latest SEC-reported Revenue, NetIncomeLoss and Assets from official EDGAR companyfacts. Look up by ticker, CIK or company name; returns filing dates and fiscal periods. Uses SEC public-domain data with a declared User-Agent.

TLS/SSL certificate check for any public host: issuer, subject, SAN list, validity window, days until expiry, SHA-256 fingerprint and whether the certificate chain verified. Computed by a direct TLS handshake from our own servers. For uptime and security monitoring agents, vendor endpoint checks and integration pre-flight.

Extract the readable main content of any public web page as clean text: send a URL, get the page title, excerpt and body text with navigation, ads and boilerplate stripped (Mozilla Readability, computed on our own servers). For RAG ingestion, summarization, research and page monitoring. First-party extraction: no third-party reader service is resold.

Turn unstructured text into strict, machine-readable JSON for agent pipelines: a deterministic, reproducible alternative to an LLM extraction call. Extracts emails, URLs, EVM wallet addresses, transaction hashes, ISO-normalized dates, money amounts, percentages, phone numbers and key:value pairs from invoices, emails, messages, logs or documents. Pass fields or a JSON schema to receive exactly the fields you need. Same input, same output, in milliseconds.

Convert Unix seconds, Unix milliseconds or an ISO date to UTC and Asia/Shanghai timestamps. An empty object returns the current time.

ERC-20 token safety check for one contract address on Base, Ethereum or BSC: honeypot and buy/sell tax simulation (honeypot.is), liquidity and pair age (DexScreener), and direct on-chain reads (name, symbol, decimals, total supply, owner), combined into risk flags and a four-grade risk_level. Sources are fail-soft and listed in the response; chain defaults to base and also accepts chainId 8453, 1 or 56.

Look up a Base wallet address: native ETH plus balances for a curated list of 513 tokens, read directly from Base chain state via public RPC with a self-hosted reader (no third-party data API). The response includes a coverage field: tokens outside the list with no transfers in the discovery window (default about 28 hours) are not reported. Balances only; no USD valuation.

Multi-chain EVM wallet portfolio lookup: native coin plus curated token balances with best-effort USD valuation for one address across Base, Ethereum and BSC, read live from public RPC with prices from DexScreener. Optional chains parameter selects a subset (default: all three). USD values are estimates and may be null for illiquid tokens; per-chain failures are reported per chain instead of failing the whole call.

Ask a question in natural language and get a direct, synthesized answer with citations, powered by Exa: no result list to sift through, the answer plus its sources in one call. For fact lookups, research questions, market and competitor questions inside agent workflows where the agent needs an answer, not links. No Exa account, API key or subscription needed: pay per call in USDC via x402.

Fetch any public web page and extract its readable content as clean, LLM-ready markdown: articles, documentation, blog posts, product pages and PDFs, with navigation and boilerplate stripped for RAG ingestion, summarization, research and page monitoring inside agent workflows. Send a URL, get the text. No Jina account, API key or subscription needed: pay per call in USDC via x402.

Live web search for AI agents, powered by Exa: send a natural-language query and get ranked results with titles, URLs, publish dates and text highlights, ready to cite, summarize or read further. For research, fact-checking, news and docs lookups, price and competitor checks inside agent workflows. No Exa account, API key or subscription needed: pay per call in USDC via x402.