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QuickSign

https://quicksign.pro/api/mcp/sse

answers a handshake

Registry name: io.github.causehacker/quicksign
Reports itself as: QuickSign 1.0.0
Protocol version: 2025-06-18
Transport: streamable-http
HTTP status: 200
Latency: 261 ms
Tools: 4
Checked: 2026-09-06T08:22:48Z

Tools it reports

push_draft_text
get_draft_status
get_draft_content
get_handoff_link

Check it yourself

curl -s -X POST https://quicksign.pro/api/mcp/sse \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"you","version":"0"}}}'