Context selection and compression for AI agents - recall measured, not claimed.
Connect Runs on your machine
claude mcp add cap-shield -e CAP_SHIELD_API_KEY=<CAP_SHIELD_API_KEY> -- uvx cap-shield==0.4.1
{
"mcpServers": {
"cap-shield": {
"command": "uvx",
"args": [
"cap-shield==0.4.1"
],
"env": {
"CAP_SHIELD_API_KEY": "<CAP_SHIELD_API_KEY>"
}
}
}
}
{
"mcpServers": {
"cap-shield": {
"command": "uvx",
"args": [
"cap-shield==0.4.1"
],
"env": {
"CAP_SHIELD_API_KEY": "<CAP_SHIELD_API_KEY>"
}
}
}
}
{
"servers": {
"cap-shield": {
"type": "stdio",
"command": "uvx",
"args": [
"cap-shield==0.4.1"
],
"env": {
"CAP_SHIELD_API_KEY": "<CAP_SHIELD_API_KEY>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
CAP_SHIELD_API_KEYOptional, secret | Only needed for the two tools that store and retrieve memory. measure_traffic and list_packages work without it. |
Details
| Package | [email protected] (PYPI, stdio) |
| First published | 26 Aug 2026 |
| Last updated | 26 Aug 2026 |
| Registry name | io.github.robinlidberg-dot/cap-shield |
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