Non-custodial burner wallet for AI agents: make a wallet, check balance, send, swap.
Connect Chain to Claude, Cursor or any other MCP client and it stops being a tab you switch to. Non-custodial burner wallet for AI agents: make a wallet, check balance, send, swap. The chain mcp server is what makes that connection.
A security suite for AI agents — the seatbelt that catches the dangerous thing BEFORE it happens. Three guards, each callable on its own (and as MCP tools), pairing with any wallet or identity stack:
chain-signer on PyPI is all you need. Most clients run it directly, so configuration is a few lines and a restart.
Configuration is passed through the environment: ETHERSCAN_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. It is maintained by Kevthetech143; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
{
"mcpServers": {
"chain-signer": {
"command": "uvx",
"args": ["chain-signer"],
"env": {
"ETHERSCAN_API_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| ETHERSCAN_API_KEY | Credential the server authenticates with. | Yes |
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Microsoft's official browser automation server — drive a real browser through the accessibility tree, no screenshots needed.
GitHub's official server — repos, issues, pull requests, Actions and code security, straight from your assistant.
Issue tracking at the speed of conversation — Linear's official hosted server with OAuth and zero install.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
Timezone sanity for AI — current time anywhere and correct conversions, without the model doing date math.