Lets an AI agent hand a secret to a person as a one-time link, with no way to read it back.
Connect Runs on your machine
claude mcp add x-tkn-mcp -e X_TKN_API_KEY=<X_TKN_API_KEY> -e X_TKN_API_KEY_ID=<X_TKN_API_KEY_ID> -- npx -y @fennecstudio/[email protected]{
"mcpServers": {
"x-tkn-mcp": {
"command": "npx",
"args": [
"-y",
"@fennecstudio/[email protected]"
],
"env": {
"X_TKN_API_KEY": "<X_TKN_API_KEY>",
"X_TKN_API_KEY_ID": "<X_TKN_API_KEY_ID>"
}
}
}
}{
"mcpServers": {
"x-tkn-mcp": {
"command": "npx",
"args": [
"-y",
"@fennecstudio/[email protected]"
],
"env": {
"X_TKN_API_KEY": "<X_TKN_API_KEY>",
"X_TKN_API_KEY_ID": "<X_TKN_API_KEY_ID>"
}
}
}
}{
"servers": {
"x-tkn-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@fennecstudio/[email protected]"
],
"env": {
"X_TKN_API_KEY": "<X_TKN_API_KEY>",
"X_TKN_API_KEY_ID": "<X_TKN_API_KEY_ID>"
}
}
}
}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 |
|---|---|
X_TKN_API_KEYOptional, secret | Your X-TKN API key. Optional: without one, the first tool call starts a sandbox that lasts 24 hours, as does every secret it creates, and saves its key in $XDG_CONFIG_HOME/x-tkn/sandbox.json (~/.config/x-tkn/ by default) for the next start to reuse. Developer keys are free and stay: create one in t… |
X_TKN_API_KEY_IDOptional, secret | Read when X_TKN_API_KEY is not set. Holds the same API key. |
Details
| Package | @fennecstudio/[email protected] (NPM, stdio) |
| First published | 22 Oct 2026 |
| Last updated | 22 Oct 2026 |
| Registry name | io.github.fennecstudio/x-tkn-mcp |
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