mcp-pulse
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Method
GitHub
npx mcptop
probed 2026-10-03
castle.usefulapi.io
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any
alive
needs auth
paid (402)
newer protocol
down or broken
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rate limited
server error
not MCP
timeout
no DNS
TLS error
refused
error
Protocol
any
2025-11-25
2025-06-18
2025-03-26
2024-11-05
Transport
any
streamable http
sse
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io.usefulapi/castle
rate limited
castle.usefulapi.io
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