MCP Server Directory

Receita Federal NFS-e: Notas Emitidas io.github.mcp-dir/receita_federal_nfse_emitidas-mcp

Receita Federal NFS-e: Notas Emitidas, official-source lookup. Platform-hosted, pay per query with p

Chess Results ai.b77/chess-results

Live chess tournament results and up-to-date player ratings in chat.

Skilder ai.skilder/skilder

One place to build, share, and govern the skills and tools your AI agents use at work.

Receita Federal: CTe io.github.mcp-dir/receita_federal_cte-mcp

Receita Federal: CTe, official-source lookup. Platform-hosted, pay per query with prepaid credit.

opentax io.github.Invaro/opentax

Verifiable US tax oracle for AI agents: cited, machine-checkable federal and state tax computation

Starwell: World Data & Statistics dev.starwell/world-data-statistics

Statistics from 28 agencies: FRED, Eurostat, ECB, World Bank, OECD. Cited values, computed answers.

ebay-seller-mcp com.haulbound/ebay-seller-mcp

Run an eBay seller account from your AI assistant: orders, listings, stock, fees and payouts.

aisha com.hi-aisha/aisha

Verified local businesses, bookable by AI agents: services, prices, availability and appointments.

Banco Central do Brasil (BCB): Valores a Receber io.github.mcp-dir/bcb_valores_receber-mcp

Banco Central do Brasil (BCB): Valores a Receber, official-source lookup. Platform-hosted, pay per q

MCP server for SendGrid's v3 API: email marketing, transactional mail, templates, and analytics.

Safe, audited PostgreSQL operations for AI agents: queries, migrations, EXPLAIN, containers

Receita Federal: IRPF io.github.mcp-dir/receita_federal_irpf-mcp

Receita Federal: IRPF, official-source lookup. Platform-hosted, pay per query with prepaid credit.

Final release; the checks moved to 9lives (9l mcp). Local QA MCP: scan, inspect, repro, run tests.

Statistics Canada's 8,200+ data tables: CPI, GDP, labour force, housing. No API key.

Papers With Backtest com.paperswithbacktest/papers-with-backtest

Search 5,000+ trading papers with verified backtests, strategies, datasets, and courses.

Centipid ISP Billing com.centipidbilling/billing

Query your ISP's revenue, subscribers, payments and routers. Needs a Centipid account and API key.

Name.ai MCP Server ai.name/nameai-mcp

Domain availability search, WHOIS lookup, TLD pricing and registry rules from name.ai. Read-only.

SENATRAN: Validar CNH io.github.mcp-dir/senatran_validar_cnh-mcp

SENATRAN: Validar CNH, official-source lookup. Platform-hosted, pay per query with prepaid credit.

MCP Auth Preflight us.inversolabs/mcp-auth-preflight

Preflight MCP OAuth compatibility with structured evidence and remediation guidance.

Authorization answers from real policy code: evaluate Rego locally, or ask an AuthZEN 1.0 PDP.

Safety boundary for agent written GitHub PR reviews: pending and invisible, submitting is opt-in

ai-visibility-check com.justinmckelvey/ai-visibility-check

Free AI visibility check: is your business cited when customers ask AI? Score plus competitors.

flock dev.workers.perch-app.flock/flock

Build-in-public for AI agents: post_update publishes milestones to your agent's public page.

Helvetic Research io.github.KushPatil22/helvetic-research

Research-only MCP server: your AI as a quant research desk. 90 tools, no trades, no brokers.