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Exact symbolic math for LLMs: integrals, equations, matrices, and claim verification via Giac/Xcas
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Utilities Official MCP Registry · npm Local 39 a week GPL-3.0-OR-LATER
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MCP conformance test harness. JSON-RPC, OAuth 2.1 PKCE, schemas, smoke, annotations. CLI + lib.
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Utilities Official MCP Registry · npm Local 39 a week MIT
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Validate email addresses for deliverability and manage email validation batches with Truelist.
100% up · 30 days
Email Official MCP Registry · npm Local Remote 39 a week MIT
QR
QRX codes.qrx/mcp Turn a prompt and a link into a branded, print-ready QR code that always scans.
100% up · 30 days
Model and agent tools Official MCP Registry · npm Local Remote 38 a week MIT
UN
UniRate io.github.UniRate-API/mcp Currency conversion and exchange rates for AI. 170+ currencies, historical data back to 1999.
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Finance and payments Official MCP Registry · npm Local 38 a week MIT
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Tamper-evident, SHA-256 hash-chained audit trail and observability for AI agents.
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Monitoring and observability Official MCP Registry · npm Local 38 a week MIT
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Six pure, in-memory CSS color tools: parse, convert, WCAG/APCA contrast, gamut map, ramps, solver
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Developer tools Official MCP Registry · npm Local 38 a week MIT
BR
Brmarket io.github.thomenz/brmarket-mcp FREE Brazilian marketplace search (ML, Shopee, AliExpress) + import-tax calculator (x402)
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E-commerce Official MCP Registry · npm Local 38 a week MIT
TH
Thunderbit io.github.thunderbit-com/thunderbit-mcp-server AI-powered web scraping MCP. Distill pages to Markdown or extract structured data via JSON Schema.
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Web search and scraping Official MCP Registry · npm Local 38 a week MIT
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Vietnam: VietQR, address, tax ID, CCCD, phone, holiday, names, number/date format, lunar, e-invoice
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Finance and payments Official MCP Registry · npm Local 827 a week MIT
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Open-source MCP server: encrypted local keys and state, operator approval gates, a hash-chained log.
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Utilities Official MCP Registry · npm Local 37 a week APACHE-2.0
OK
Okaneland io.github.TheBaronofAI/okaneland-mcp Verified AI-tool prices and AI product margin math for agents.
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Utilities Official MCP Registry · npm Local 37 a week MIT
OM
Omnideck io.github.aapd-studio/omnideck Local privacy-first tools: redact secrets, decode JWTs, compare LLM costs. No network calls.
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Security Official MCP Registry · npm Local 37 a week MIT
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Compose Multiplatform UI as structured JSON for agents: trees, tokens, previews, diffs. No pixels.
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Utilities Official MCP Registry · npm Local 37 a week MIT
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Track and manage how your brand appears in AI answers: rank, mentions, sentiment, share of voice.
100% up · 30 days
Design and media Official MCP Registry · npm Local Remote 36 a week MIT
OP
Openmoji io.github.mrfentmen/openmoji-mcp Search 4500+ open-source emoji with SVG links - no API key.
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Design and media Official MCP Registry · npm Local 36 a week MIT
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Validate XRechnung XML and ZUGFeRD / Factur-X PDFs with the free checkxrechnung.com API.
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Office documents and spreadsheets Official MCP Registry · npm Local 36 a week MIT
LI
LinkBit io.github.yutotanakastar/linkbit-mcp Shorten URLs, bulk create, QR, and click analytics for LinkBit.
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Data warehouses and analytics Official MCP Registry · npm Local 36 a week MIT
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Send a prompt to ChatGPT anonymously and get the answer with its web sources, as JSON.
100% up · 30 days
Model and agent tools Official MCP Registry · npm · PyPI Local Remote 35 a week MIT
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Check how well AI agents can read a web page: a score, the evidence and a ranked fix list.
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Utilities Official MCP Registry · npm Local 35 a week APACHE-2.0