Developer Tools MCP Servers

Nonlinear Calendar: this year’s months fold onto the previous 12 years. No key to try.

Verify, explain and audit regexes (ReDoS, engine compatibility) offline.

Atmospheres to PSI, number discarded

ULID Crockford charset

Find customers, research each one and draft the outreach. Nothing sends without approval.

Via HTTP/1.1 hop count, value discarded

Read-only AI access to Osboon business card analytics, viewers, links, connections and contacts.

USPS state code OR.

WordPress plugin release signals from public support threads, with evidence and explicit unknowns.

Python capability compiler: read-only analysis, experiment history/comparison and exposure planning.

Robot lawn mower dataset from BestRobotMower.co: specs, prices, 0-5 scores, buying recommendations.

AI phone receptionist for small businesses: read calls, leads and booked appointments.

Infrastructure and hazard intelligence with provenance, spatial confidence and quality contracts.

AI-operated. Free previews: licences, page reads, endpoint checks. Paid full versions over x402.

Net worth percentile by age (Federal Reserve data) and retirement savings calculators. Free.

Create-only, age-encrypted deposits of new logins and notes into Vaultwarden, without vault reads.

Steam game data with dates: review score and consensus, price lows, tags, new releases; cite it.

UK Making Tax Digital for Income Tax: who must use it and when, software that fits, deadlines.

Valide une adresse de livraison : normalisation, geocodage, score de livrabilite. x402.

Find AI agents, delegate research and other tasks, and get results in your AI assistant.

Reliability scoring for agent jobs and habit analytics. Pay per call via x402 (USDC on Base).

Full-text search over web pages published on IPFS. Free, no key.

Live Iran exchange rates, gold, crypto, and Toman market data for AI agents.

Your life organizer: tasks, reminders, bills, habits, family dates and trips — read and add from AI.

DNS records, SSL certificate, WHOIS/RDAP and website tech scan for any domain

Token counting, RAG chunking, truncation, HTML to Markdown and JSON repair

Uniswap/PancakeSwap/Aerodrome LP pools and price ranges ranked by net APR after impermanent loss

Generate QR codes (URL, WiFi, vCard) and barcodes as PNG/SVG

Read, search, draft, send and schedule email in your company-domain mailboxes on Domailo.

Create, edit, and organize mind maps in the Mind Elixir Desktop app from any MCP client.

alphanumeric run count, text discarded

Look up Chinese phone number carrier, province, and city from official MIIT allocation data.

Extract text and metadata from PDFs; convert Markdown or text to PDF

argon2id encoded hash shape, value discarded

Inspect XLSX/XLSM workbooks, validate email, generate SVG QR codes, and look up domain DNS and TLS.

Cited product-review verdicts from real user voices — free remote MCP, no API key.

Read-only Google Search Console MCP: Search Analytics, sitemaps, URL inspection. 5 tools.

ETag shape, value discarded

Age seconds band, value discarded

Daily protein need by weight and goal, with a sample Indian food plan to hit it.

Public holidays for 150+ countries, business-day maths and timezone lookup

Safe PostgreSQL migrations: schema drift, lock analysis, safe rewrites, data checksums. Read-only.

sentence count, text discarded

UK postcode lookup, nearest postcodes, autocomplete and distance (OS open data)

Free tracker of Claude Code usage-limit resets announced by @ClaudeDevs.

Agent-native marketing email: draft, edit, screenshot, and send from your verified domain.

Hostname shape, value discarded

All your company email, operated by agents and reviewed by you.