Utilities MCP servers

Read-only machine-vision calculations for optics, interfaces, line scan, sensors, and models.

Convert files between 44 formats: documents, spreadsheets, images, ebooks, email and subtitles.

Paid MCP tools behind one endpoint. Agents pay per call in USDC on Base via x402.

PDF text by page with hashes. 0.005 USDC/Base via x402. No OCR. Check /health for readiness.

Shared countdown timers that stay in sync on every screen — no account, any number of viewers.

Free German workforce calculators (bridge days, net working time, staffing/PeBeM) - no auth needed.

BaZi (Chinese Four Pillars) chart calculator. Structured chart data only, no predictions.

63 pay-per-call tools for agents: vision, text, data, web, blockchain. USDC on Base via x402.

Zero-auth MCP: image optimize, cited storage/format data, and dev utilities LLMs get wrong.

Delivery cost calculator and container dimensions for France. Real HT/TTC prices.

Cloud GPU prices per hour, plus developer helpers: hash, HMAC, JWT, IDs, JSON, cron, time zones.

Free read-only tools: Market402 x402 index search, operator track records, PDF price quotes.

Evaluates Reverse Polish Notation (postfix) expressions: arithmetic, trig, logs, bitwise ops.

Validation suite: EU VAT (VIES), IBAN mod-97, email (MX+disposable), geo place lookup, VIN decode.

x402 pay-per-call APIs for agents: web search, wallet/token checks, text structuring.

Math MCP server for primality, factorization, Java templates, and integer multiplication.

Free HTML/CSV conversion, JSON validation, text stats and time APIs. Optional agent interviews.

Render Mermaid diagrams, Markdown to PDF and outlines, image OCR, and media metadata cleanup.

Evaluate mathematical expressions and propagate measurement uncertainty.

Docs to Markdown, SEC filings, insider trades, Treasury yields, FRED macro, FX rates, dev utils.

Printwren: web page or HTML to PDF with real Chrome; pages, base64 or download link. Free, no key.

Keyless IP geolocation, ASN/ISP, timezone and DNS records for any IP or domain, plus your own IP.

Concierge MCP for agentic workflows: verified time + drift, uuid, diff, calc, attest, verify.

Deterministic engineering solvers: biquad filter design, room eigenmodes, LLM VRAM fit.

Is this prose AI-written? A probability with the tells behind it. Free to start, no key.

Machine-readable utilities and datasets for AI agents.

Free hosted MCP server by Baby Age Calculator: exact baby age, zodiac, and milestone dates. No key.

EPUB/PDF tools: merge, split, compress, convert, edit metadata, validate ebooks.