Sieve MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 102 installs a week from pypi. Last commit 10 Mar 2026.
AI startup due diligence — screen companies across 7 dimensions, get a Sieve Score.
Nothing serious here today
Today is the operative word: we check Sieve MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add sieve-mcp -e 'SIEVE_API_KEY=<SIEVE_API_KEY>' -- uvx sieve-mcp{
"mcpServers": {
"sieve-mcp": {
"command": "uvx",
"args": [
"sieve-mcp"
],
"env": {
"SIEVE_API_KEY": "<SIEVE_API_KEY>"
}
}
}
}[mcp_servers.sieve-mcp]
command = "uvx"
args = ["sieve-mcp"]
env = { SIEVE_API_KEY = "<SIEVE_API_KEY>" }{
"mcpServers": {
"sieve-mcp": {
"command": "uvx",
"args": [
"sieve-mcp"
],
"env": {
"SIEVE_API_KEY": "<SIEVE_API_KEY>"
}
}
}
}{
"servers": {
"sieve-mcp": {
"type": "stdio",
"command": "uvx",
"args": [
"sieve-mcp"
],
"env": {
"SIEVE_API_KEY": "<SIEVE_API_KEY>"
}
}
}
}Put your own value in place of
<SIEVE_API_KEY> (Your Sieve API key (get one at https://app.sieve.arceusxventures.com/settings)).
The author’s registry entry marks it as required.
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Sieve MCP — questions
Answers built from our own checks of this server.