Developer Tools MCP Servers

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Property maintenance triage and vendor packet generator.

Scrape Federal Register rules, proposed rules, notices and orders by agency or date. Pay per row.

One encrypted channel where Claude Code, Cursor, Codex and any other agent talk to each other.

Free KZ agent utilities (Kazpost tracking, IIN/BIN, IBAN, LEI, FX) + governed API marketplace.

Tabular data retrieval. Index CSV/Excel, query rows, aggregate. 99%+ savings vs raw file reads.

Inspect, drive and debug a running Ren'Py game: state, screenshots, guarded clicks, saves, builds.

Dev-registry data: npm/PyPI/Docker/VS Code packages, dep graphs, vulns, 50+ ecosystems.

Free C2PA 2.4 triage and reproducible official trust snapshot. No media, keys, or payment.

Ahrefs: Ahrefs API: SEO powerhouse featuring keyword research, backlink analysis, and SERP tracking.

Search gift meals and send them as gifts. Live catalog, cart, and guest checkout for SendaMeal.

Search and price made-to-order rings, jewelry, and lab-grown diamonds from the 25karats catalog.

Local MCP server for semantic Apple TV control with optional screenshots.

AI agent policy decisions: ALLOW, DENY, APPROVE, ESCALATE. 192 jurisdictions, signed evidence.

Free catalog and 2,048-character secret-scan preview for Fabler's x402 agent tools on Base.

Scrape arXiv, OpenAlex and Crossref papers by author, topic, journal or DOI. Pay per row.

Read-only Amazon SES observability: search events, inspect bounces, pull delivery stats.

New Rust crates & cargo package releases. $0.01/query. Register in-session — free testnet funds.

US telecom availability and intelligence by address, with FCC provenance. Fiber-first.

Australian vehicle marketplace: search listings, buy/sell guides, and manage your own.

13 deterministic agent utilities: timezone, cron, RRULE, currency, regex, diff, hashing & more.

Check a domain's public SPF, DMARC, MX and DKIM DNS records on demand. No account required.

Build and edit landing pages and websites from your AI assistant, and pull how they are performing.

Find a home in Germany: search athaus listings, save searches, send enquiries and book viewings.

Static linter for CLAUDE.md-style agent constitution files: 10 operational-guardrail checks.

USPS state code DC.

Market analysis from live data: stocks, ETFs, commodities, crypto, reports and options levels.

Resolve, search and verify legal citations against the official sources, with provenance.

Connect, monitor, and control AI agents — tasks, approvals, schedules, and governance.

LATAM fiat ramps on Stellar for AI agents: live quotes, sandbox orders, PIX/SPEI simulation, docs

Directorio hispano Miami-Centroamérica: busca negocios, reserva citas reales y ordena comida.

Search and read Hyperwave's published wavetable documentation.

API oficial da Vendizap: gerencie produtos, estoque, pedidos e descontos da sua loja.

Give an agent its own inbox: send, receive, and pull signup codes from real email.

Premium agentic endpoint for debt-collection-bot-mcp.

Consulta status de NFe na SEFAZ pela chave de acesso: autorizada, cancelada, protocolo.

Highlight anything you read. Then ask your AI about it: search, read and edit your highlights.

Trusted B2B service providers with verified client reviews

Create and drive KanbanThing kanban boards. No account, no API key, board link required.

Free legal costs tools for England and Wales: CPR deadlines, Part 36, fixed costs, fees, interest.

Deterministic peptide reconstitution and dosing math, so assistants compute it instead of guessing.

Coservices marketing and IT agency services directory for AI agents.

MCP server for Tomba email finder, verification, and contact enrichment API

Agent coordination, email pipeline, lead verification, and campaign operations. 38 tools.

AI-powered browser automation MCP — 6 tools for web interaction, extraction, and validation.

Research and sources on sortition, citizens' assemblies and democratic reform.

Manage your wardrobe or closet, discover ways to wear your clothes, and get outfit suggestions.

Read-only facts about Grideōs from its signed, hash-chained ledger. Verify before you cite.