API Integration
| Server | Language | Stars | Downloads |
|---|---|---|---|
| CrossFin AI agent access to Asian crypto markets. Korean exchange routing and x402 paid APIs. | TypeScript | — | — |
| crossref Crossref MCP — wraps the Crossref REST API (academic papers, free, no auth) | — | — | — |
| Crossref Scholarly Data Search 150M+ academic works, journals, and funders via Crossref API. | — | — | — |
| CrowTerminal - External Brain for AI Agents External Brain for AI Agents - persistent versioned memory for creators | TypeScript | — | — |
| @crscreditapi/b2c-mcp-customer MCP server for B2C ECM documentation — error codes, OpenAPI spec, identity flow, and knowledge base | TypeScript | — | — |
| @crscreditapi/b2c-mcp-server MCP server for B2C ECM - live queries, diagnostics, user management, and documentation lookups | TypeScript | — | — |
| @crscreditapi/finstack-mcp-server MCP server for Finstack | TypeScript | — | — |
| Cruncher Scientific calculator MCP server with 43 tools: arithmetic, trig, stats, unit conversion. | TypeScript | — | — |
| @crush-rewards/mcp-server MCP server for Crush Pricing Intelligence API — pay-per-query via x402 | TypeScript | — | — |
| crw Fast, lightweight Firecrawl alternative in Rust. Web scraper, crawler & search API with MCP server for AI agents. Drop-in Firecrawl-compatible API (/v1/scrape, /v1/crawl, /v1/search). 2.3x faster than Tavily, 1.5x faster than Firecrawl in 1K-URL benchmarks. 6 MB RAM, single binary. Self-host or use managed cloud. | Rust | 78 | — |
| crypto Crypto MCP — cryptocurrency prices and currency conversion | — | — | — |
| Crypto Market Data Real-time crypto prices OHLCV orderbook - Bitcoin Ethereum 10000+ tokens | — | — | — |
| Crypto News Feed API Real-time crypto news with sentiment scores, token mentions. CoinGecko + CryptoPanic. x402. | — | — | — |
| Cryptopolitan MCP Real-time crypto news, analysis, and price predictions for AI agents via MCP. | — | — | — |
| CryptoPrice Real-time cryptocurrency prices, market data, and trending coins via CoinGecko. | — | — | — |
| CryptoSignals Real-time crypto volume anomaly detection across 50+ tokens for whale signals | Python | — | — |
| Crypto Tools Registry Registry API for 800+ crypto blockchain DeFi NFT trading tools discovery | — | — | — |
| CryptoWeather Integrates with CryptoWeather's Bitcoin price prediction API to provide current trading signals, performance metrics, recommendations, and methodology information for cryptocurrency market analysis. | — | 3 | — |
| Crystallize MCP Crystallize headless commerce tools for AI agents via Model Context Protocol | TypeScript | — | — |
| cs2-arbitrage-tracker API for tracking CS2 case and item arbitrage between CSFloat and Steam | TypeScript | 0 | — |
| CSE MCP MCP server for Colombo Stock Exchange data | TypeScript | — | — |
| CSJN — Corte Suprema de Justicia de la Nación Search Argentine Supreme Court sumarios: legal topics, case analysis, metadata | Python | — | — |
| CSV to JSON API Parse CSV to JSON array. Auto-detect delimiter, headers. x402 micropayment. | — | — | — |
| Curate-Ipsum Code synthesis through belief revision, mutation testing, and verification | Python | — | — |
| Curistat Trading Analytics Futures volatility intelligence: forecasts, regime detection, signals, and analogs for ES/NQ. | Python | — | — |