2ndOpinion — AI-to-AI Code Review via MCP

cityparity gives AI agents real cost-of-living and quality-of-life comparison tools. Point it at two cities and it returns take-home pay, a full cost breakdown (housing, healthcare, childcare, food, transit, travel home, property tax), and the equivalent salary you'd need in the target city to come out even. It also surfaces the non-cash deltas people actually move for: vacation days, parental leave, universal healthcare. Beyond two-city compares, it ranks cities by a composite quality score and looks up inbound-worker tax regimes (Italy impatriati, Portugal IFICI, and a few others). Over 165 cities across 69 countries. Free, no API key, hosted Streamable HTTP.

GrantIQ lets ChatGPT and Claude find UK & EU grants you can actually win. It checks eligibility before recommending, explains why each grant fits, and cites the funder's own page on every answer — with an honest "competition_risk: unknown" when the data isn't there. Free to install. 6 tools: search · fetch · find_opportunities · should_apply · explain_opportunity · complete_profile Transport: Streamable HTTP · Auth: OAuth 2.1 + PKCE (free tier, no card) Install (Claude): claude mcp add --transport http grantiq https://grantiq.co.uk/mcp

Connect Claude, ChatGPT, Cursor, and any MCP-compatible AI agent to live crypto market data — real-time tickers, orderbook depth, and OHLCV candles across major exchanges.

Channel management and messaging capabilities

Primary-source lithium and battery-metals mining data, exposed as MCP tools. Query any producer or mine for production, AISC, reserves, ownership, royalties, offtakes, and corporate financials — every figure extracted from SEC / ASX / TSX / SEDAR / cninfo regulator filings and FX-normalized to USD, each citable to its source document. Covers 40 producers (hardrock spodumene + brine) and 49 mines, including Greenbushes, Pilgangoora, Atacama, Grota do Cirilo, Wodgina, and Kings Mountain. Three tools: headline summary ($0.02), full structured rows ($0.05), and a fully-cited narrative ($0.20) — each paid per call via the x402 protocol from your own wallet on Base (USDC). Example tickers: ALB, SQM, PILBF, ATUSF, SGML.

BECOMER gives any LLM persistent memory across sessions — without spending a single token on retrieval.

AI-integrated tools for learning, writing, and publishing. ProvenanceAI builds free MCP tools that help authors develop and protect their voice, editors assess manuscript quality, instructors design humanities courses, and researchers produce defensible, well-sourced work. Current tools cover editorial analysis: voice profiling, authenticity scoring, structural review, style consistency, research grading, and manuscript readiness. Expanding into curriculum design, academic writing, and book production workflows. No email gate. Every tool returns a full structured result on the first call. Powered by ProvenanceAI × Exact Rush.

An MCP server that provides a tool for sending transactional emails via Mailtrap

MCP server to provide Figma layout information to AI coding agents like Cursor

Smart Money Verdict per stock & fund from SEC 13F, insider, activist & congressional filings — query institutional positioning, insider trades, activist stakes, and congressional trading from any MCP client.

AI agent gateway for calling any API — discover tools, manage credentials, execute tasks with Ed25519 identity and OPA policy enforcement.

Real-time Ethereum liquidation intelligence for AI agents and MEV bots. Monitor near-liquidation borrowers across Aave V3, Spark, and Morpho Blue with live health factor data. Tools: get_near_liquidation_positions, get_liquidation_analytics, get_protocol_health, get_borrower_details. MCP endpoint: https://mev.advalorem.io/mcp

KOL, smart money & whale wallets API on Solana, BNB, Base, ETH: Wallet tracker, Leaderboard

Enterprise-grade MCP server for automated SOCKS5 proxy pool orchestration and dynamic SMTP port 25 connectivity analytics.

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Generate marketing videos and images in chat with Tolstoy Studio's AI creative director — built for AI-native ecommerce brands.

Cali is an AI calorie tracker and weight-loss coach that works inside ChatGPT and Claude. Just say what you ate — or snap a photo — and Cali logs it, estimates the calories, tracks your daily total, weight trend and streak, and coaches you. No separate app to download: it runs as an MCP connector in Claude (or an app in ChatGPT), works on web, phone and desktop, learns your regulars so logging gets faster, and is judgement-free. Free 3-day trial.

AI image generation using various models

Web and local search using Brave's Search API

Global business entity verification, sanctions screening, UBO mapping, and jurisdiction risk scoring for AI agents. Pay per call in crypto (USDT/USDC/BTC/ETH). No subscription. Built by ARM Consultancy LLC, UAE.

Write notes to Flomo

MCP-native memory layer for Claude Code, Cursor, Cline, Continue, and 16 other AI tools. Hybrid search (BM25 + pgvector + graph), self-hosted on Supabase + Vercel, 100% MIT, no paywall.

Automatically create a remote browser to complete your specified tasks, developed based on Browser Use + Sandbox. 自动创建一个远程浏览器，完成你指定的任务，基于Browser Use + Sandbox开发。

Argentine electronic invoicing (facturación electrónica) MCP Server for ARCA/AFIP. Emit invoices, manage credentials, check delegations, and look up taxpayers — all directly from your AI agent. 🔥 10 tools ready: emit_invoice, get_invoice, list_invoices, list_credentials, create_credential, check_delegation, request_delegation, lookup_taxpayer, get_billing_status, keycae_health. ⚡ Zero setup: npx keycae-mcp and your agent can issue legal invoices in Argentina with CAE, PDF, and QR code.

Free MCP for AI agents: search 72M+ businesses across 195 countries (phone, email, hours, geo) — never returns empty. Plus live local search (real-time ratings/hours/phone) and real-time travel — flights, hotels, cars, attractions, weather, currency — with booking links. 23 tools, free key.

Unofficial Notion MCP server built on Notion's private API (token_v2 cookie). Full read/write access to your entire Notion workspace — no integration token and no per-page sharing.

A Model Context Protocol server that provides access to Redis databases. This server enables LLMs to interact with Redis key-value stores through a set of standardized tools.