Convert an amount between currencies at the latest ECB reference rate (Frankfurter, keyless).

Latest value, change and year-over-year % for 24 key US indicators: CPI, core CPI, PCE, payrolls, unemployment, jobless claims, Fed funds, 2y/10y/30y yields, curve, mortgages, GDP, M2, Fed balance sheet, dollar index. Use this for a one-call snapshot of the US economy; for one indicator's history use macro-series.

Fetch a web page and return a concise summary and key points (SSRF-safe fetch + Claude).

Generate a QR code from any text or URL. Returns base64-encoded PNG.

Add tax to a net amount or extract tax from a gross amount, using a supplied rate or an embedded table of US state (state + avg local) and worldwide VAT/GST rates.

Get the verified Solidity/Vyper source code for a deployed contract by address, sourced from Sourcify. Returns every source file (path + content), the contract name, language, compiler version and compiler settings (optimizer, evmVersion) — the full human-readable source an agent needs to read, audit or feed to an LLM. Supports Ethereum, Base, Arbitrum, Optimism, Polygon. Unverified contracts return `verified:false`. Live reads with cache fallback.

Japan income-wall analysis (fuyou/103-106-130 walls): tax wall derived from the engine, social insurance walls time-versioned (2026-10 rule change), spousal + student dependent (1.5M/1.88M) walls. $0.02/call.

Email validation — syntax check plus live MX record DNS lookup to confirm deliverability.

Generate a solid-color placeholder image with optional centered text (no input image needed).

Parse CSV/TSV (RFC 4180) into a JSON array of row objects (or arrays).

Use when an agent needs to identify a company as a legal entity. Returns a resolution against the public legal entity identifier (LEI) registry by LEI, legal name, jurisdiction, registration ID or country, with ranked matches and auditable registry evidence. $0.01.

Search Hacker News stories and comments by query, sorted by relevance or date (Algolia HN).

PDF to text from uploaded bytes. POST the raw PDF as the body (content-type application/pdf); multipart 'file' or JSON {"base64"} also work. Real PDF only (starts with %PDF), max 20 MB, with a text layer. Optional ?format=text|markdown. Bad files get HTTP 400 with a hint and are not charged. Sample: https://agents.crowdspark.me/samples/sample.pdf

Question answering over your own text: ask a question about material you supply and get an answer grounded only in that text (Gemini). If the text does not contain the answer it says so instead of guessing. Use it for summaries, Q&A and checks over documents, emails and pages. Input: text, question; optional language. Fixed JSON fields: llm.extract.

LLM text generation / chat completion: a raw completion from your prompt with optional system message, max_tokens and temperature; Gemini by default, other configured models by provider and model. Use it for drafting, rewriting, translation, classification or any prompt, paid per call with no API key or account. Input: prompt. Answer grounded in your own text: llm.analyze.

Structured data extraction / text to JSON: pull the fields you name out of any text into a JSON object with exactly those keys, null where the text does not state a value (Gemini, no invented values). Use it to turn emails, invoices, pages or documents into clean records. Input: text, fields[]. From a live web page: research.page_facts.

Insider trading (SEC Form 4): what a company's officers, directors and 10% owners bought and sold, parsed from their Form 4 filings at call time from EDGAR. Each trade: insider, role, date, code and meaning, shares, price, value, holdings after, 10b5-1 plan flag, filing link. Summary: open-market buys vs sells, net shares and dollars. Input: symbol (US ticker) or cik; optional days (default 90), codes such as ["P","S"].

OCR from uploaded bytes. POST the raw image as the body with its content-type (image/png, image/jpeg or image/webp); multipart 'file' or JSON {"base64"} also work. Real PNG, JPEG or WebP only, max 10 MB. Returns {text}. Bad files get HTTP 400 with a hint and are not charged. Sample: https://agents.crowdspark.me/samples/sample.png

Pay-per-call: DeFi Lending Yields

Up to 25 keyword suggestions containing the words of one seed phrase, with search volume, CPC and competition (DataForSEO Labs Keyword Suggestions).