Alternatives to Loupe: free citation lookup

Same category, ordered by trust score.

F
Firecrawl MCP Server
77Good
MCP server for Firecrawl — web search, scraping, and biomedical/arXiv paper search.
RegistryRemotefirecrawl7.6K stars
P
pagespeed-insights-mcp
75Good
Google PageSpeed Insights and CrUX: six workflow tools for web performance.
Registryruslanlap72 stars500/wk
H
Hive Intelligence MCP
73Good
Evidence-backed crypto due diligence with sources, freshness, and a runtime receipt on every call.
RegistryRemotehive-intel20 stars200/wk
S
Screaming Frog SEO Spider MCP Server (headless)
71Good
Headless Screaming Frog SEO Spider via its CLI: run crawls, export and filter data, no GUI needed.
Registrybzsasson93 stars
S
shift-mcp-server
70Good
Lightweight coordination layer for multiple AI agents working on the same codebase simultaneously.
Registrycyanheads1 stars217/wk
A
Agent Passport System — Cryptographic Identity for AI Agents
70Good
Cryptographic identity, delegation, governance, and commerce for AI agents. 152 tools.
RegistryRemoteagent-passport-system4 stars134/wk