Create, review, sign and execute MyMultiSig multisig wallet transactions from AI agents.
Connect Runs on your machine
claude mcp add mymultisig-mcp -e MYMULTISIG_API_KEY=<MYMULTISIG_API_KEY> -e MYMULTISIG_PRIVATE_KEY=<MYMULTISIG_PRIVATE_KEY> -e MYMULTISIG_CHAINS=<MYMULTISIG_CHAINS> -e MYMULTISIG_READ_ONLY=<MYMULTISIG_READ_ONLY> -e MYMULTISIG_ALLOW_SOLO_EXECUTION=<MYMULTISIG_ALLOW_SOLO_EXECUTION> -e MYMULTISIG_API_URL=<MYMULTISIG_API_URL> -- npx -y [email protected]{
"mcpServers": {
"mymultisig-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"MYMULTISIG_API_KEY": "<MYMULTISIG_API_KEY>",
"MYMULTISIG_PRIVATE_KEY": "<MYMULTISIG_PRIVATE_KEY>",
"MYMULTISIG_CHAINS": "<MYMULTISIG_CHAINS>",
"MYMULTISIG_READ_ONLY": "<MYMULTISIG_READ_ONLY>",
"MYMULTISIG_ALLOW_SOLO_EXECUTION": "<MYMULTISIG_ALLOW_SOLO_EXECUTION>",
"MYMULTISIG_API_URL": "<MYMULTISIG_API_URL>"
}
}
}
}{
"mcpServers": {
"mymultisig-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"MYMULTISIG_API_KEY": "<MYMULTISIG_API_KEY>",
"MYMULTISIG_PRIVATE_KEY": "<MYMULTISIG_PRIVATE_KEY>",
"MYMULTISIG_CHAINS": "<MYMULTISIG_CHAINS>",
"MYMULTISIG_READ_ONLY": "<MYMULTISIG_READ_ONLY>",
"MYMULTISIG_ALLOW_SOLO_EXECUTION": "<MYMULTISIG_ALLOW_SOLO_EXECUTION>",
"MYMULTISIG_API_URL": "<MYMULTISIG_API_URL>"
}
}
}
}{
"servers": {
"mymultisig-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"MYMULTISIG_API_KEY": "<MYMULTISIG_API_KEY>",
"MYMULTISIG_PRIVATE_KEY": "<MYMULTISIG_PRIVATE_KEY>",
"MYMULTISIG_CHAINS": "<MYMULTISIG_CHAINS>",
"MYMULTISIG_READ_ONLY": "<MYMULTISIG_READ_ONLY>",
"MYMULTISIG_ALLOW_SOLO_EXECUTION": "<MYMULTISIG_ALLOW_SOLO_EXECUTION>",
"MYMULTISIG_API_URL": "<MYMULTISIG_API_URL>"
}
}
}
}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 |
|---|---|
MYMULTISIG_API_KEYOptional, secret | Scoped API key (mms_…) from https://mymultisig.app/settings/agents; acts as your wallet on the API |
MYMULTISIG_PRIVATE_KEYOptional, secret | The agent's own owner key (0x + 64 hex). Enables signing, executing and deploying; used locally only |
MYMULTISIG_CHAINSOptional | Comma-separated chain id allowlist, e.g. 11155111 |
MYMULTISIG_READ_ONLYOptional | Set to 1 to register read-only tools |
MYMULTISIG_ALLOW_SOLO_EXECUTIONOptional | Set to 1 to let the agent execute without another owner's approval (off by default) |
MYMULTISIG_API_URLOptional | API base URL |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 10 Nov 2026 |
| Last updated | 10 Nov 2026 |
| Registry name | io.github.marc-aurele-besner/mymultisig-mcp |
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