x402.fablerlabs.com x402 offerings

Look up the current owner of one ERC-721 token on Base with ownerOf(uint256). Accepts a strict contract address and uint256 decimal token ID, performs one read-only eth_call with bounded public-RPC fallback, and returns the normalized owner address. Reverts, non-contracts, nonexistent tokens, malformed responses, and upstream failures return non-2xx and do not settle.

Track what any Polymarket wallet is buying and selling — point your agent at a smart-money or whale address and get its public trades as a signal feed for copy-trading or market research, with no Polymarket account or API key. Reads the official account-free Polymarket Data API (data-api.polymarket.com/activity) for one strict 0x wallet address; optional bounded limit (default 25, max 100), offset (max 10,000), activity type, BUY/SELL side, start/end unix-second window, sortBy, and sortDirection. Returns sanitized activity rows — each with type, side, size, usdc_size, price, outcome, market title and slug, transaction hash, and unix timestamp — and drops name, pseudonym, bio, and profile images. Read-only; Fabler Labs is not affiliated with Polymarket; no betting execution, custody, or wager recommendation. Upstream failures, timeouts, oversized responses, and malformed or drifted schemas return non-2xx and do not settle.

Compare a spot KRW price for one symbol across Upbit and Bithumb's public, account-free ticker APIs. Required symbol (1-10 letters/digits, uppercase-normalized); optional exchange (all, upbit, or bithumb; default all). Returns per-exchange price, rolling 24h volume and notional, normalized change rate with its exchange-specific basis, and upstream timestamp, plus an absolute/percent spread when both exchanges succeed. At least one requested exchange must return a fresh, well-formed quote or the call fails and does not settle.

Create a bounded security evidence snapshot for a public HTTPS URL. Checks status, validated redirect chain, HSTS, CSP, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and cookie flags without retaining response-body content. Response metadata only; not a vulnerability scan or TLS-certificate audit.

Fetch one public HTTPS page and return bounded clean readable text, title, author, publish date, excerpt, word count, redirects, and final URL as JSON for AI agents.

Fetch one public HTTPS page and return bounded clean readable text, title, author, publish date, excerpt, word count, redirects, and final URL as JSON for AI agents.

ai-coding-security-pack.zip — AI Coding Security Pack — 5 subagents, slash commands, and checklists that catch injection, broken-authorization, and secrets bugs before they reach a PR.

Fetch one public HTTPS page and return bounded clean readable text, title, author, publish date, excerpt, word count, redirects, and final URL as JSON for AI agents.

Compare current perpetual funding rates across Binance, Bybit, Hyperliquid, and, for single-symbol requests, OKX. Returns interval-normalized annualized rates, gross cross-venue spreads, source status, mark prices when available, and funding timestamps. Optional symbol query; no symbol returns the ten widest current spreads. Market data only, not financial advice.

pre-deploy-security-checklist.zip — 18-Point Pre-Deploy Security Checklist — editable Markdown checks for secrets, authentication, data handling, dependencies, infrastructure, rollback, and sign-off.

Turn any public article or docs page into clean, LLM-ready text for RAG or summarization. Fetch one public HTTPS page and return bounded, readable text plus title, author, publish date, hostname, excerpt, word count, redirects, and final URL. HTML only; 8-second deadline; 512 KiB source and 50,000-character output limits.