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machfive

https://mcp.machfive.io/mcp/{api_key}

answers a handshake

Registry name: io.github.Bluecraft-AI/cold-email
Reports itself as: machfive 2.14.7
Protocol version: 2025-06-18
Transport: streamable-http
HTTP status: 200
Latency: 525 ms
Tools: 6
Checked: 2026-09-06T02:59:33Z

Tools it reports

list_campaigns
generate_sequence
generate_batch
list_lists
get_list_status
export_list

Check it yourself

curl -s -X POST https://mcp.machfive.io/mcp/{api_key} \
  -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"}}}'