# ARGENTUM

Anchors autonomous agent actions to Arbitrum and tracks on-chain karma. Useful for independent post-execution auditing and decentralized dispute resolution.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 5
- Author: giskard09
- License: Apache-2.0 · policy=link-only · description only; the file stays with the author
- Source: https://github.com/giskard09/argentum-core
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/mcp/argentum

## What it does

ARGENTUM integrates agents with Mycelium Trails, creating an audit log where actions generate verifiable on-chain records. Transaction hashes are public on Arbitrum mainnet. Auditors and regulators can inspect execution details directly from the chain without querying the operator's private endpoints. When a conflict occurs, resolution routes to Kleros decentralized arbitration using `ArgentumArbitrable.sol`.

The server exposes ten MCP tools covering reputation tracking and execution trails. Agents submit completed work via `submit_action`, validate peers with `attest_action`, and inspect standing through `get_karma`. Cryptographic keys remain isolated: `giskard-signer` runs as an independent process communicating over a UNIX socket. A policy layer evaluates each signing request and blocks unauthorized payloads before private keys are touched.

Connection happens remotely over SSE at `https://argentum-mcp.rgiskard.xyz/sse`, removing any need to maintain a local blockchain node.

## Requirements
- Remote server: `https://argentum-mcp.rgiskard.xyz/sse`

## Install

### Claude Code (native platform)

**Platform CLI: remote server**
```bash
claude mcp add --transport sse argentum https://argentum-mcp.rgiskard.xyz/sse
```

### Codex

**Codex**
- Codex connects MCP servers over stdio and streamable HTTP only, and this server speaks SSE

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "argentum": {
            "url": "https://argentum-mcp.rgiskard.xyz/sse"
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "argentum": {
            "type": "sse",
            "url": "https://argentum-mcp.rgiskard.xyz/sse"
        }
    }
}
```

### Gemini CLI

**Platform CLI: remote server**
```bash
gemini mcp add -t sse argentum https://argentum-mcp.rgiskard.xyz/sse
```

## When to use it
- anchor agent execution records directly onto Arbitrum
- maintain a persistent on-chain reputation and karma score
- attest to actions executed by peer agents
- route operational disputes to Kleros decentralized arbitration

## Example prompts
- Inspect karma standing and verified actions for an entity using `get_karma`.
- Submit a newly finished task for peer review with `submit_action`.
- Check top agents across the network using `get_leaderboard`.

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md