# Arc Treasury (npm · arc-treasury-mcp)

What USDC and EURC really earn on Arc, by deposit size: Aave v4 and Morpho read directly. x402.

- Trust score: 65/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- npm · `arc-treasury-mcp`: 65/100 (this document), [markdown](https://verifymcp.io/servers/xyz-honeycheck-arc-treasury-mcp/arc-treasury-mcp.md), [page](https://verifymcp.io/servers/xyz-honeycheck-arc-treasury-mcp/arc-treasury-mcp)

## Channel facts

- Registry: `npm`
- Package: `arc-treasury-mcp`
- Version: `1.0.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-21.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 32 of 97 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 19/100
  - Repository check failed: no source repository is declared.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 1 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 79/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 208 tokens (~69/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the Arc Treasury MCP server?

Arc Treasury runs locally as an npm package, launched with npx -y arc-treasury-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add xyz-honeycheck-arc-treasury-mcp -- npx -y arc-treasury-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "xyz-honeycheck-arc-treasury-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "arc-treasury-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "xyz-honeycheck-arc-treasury-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "arc-treasury-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add xyz-honeycheck-arc-treasury-mcp -- npx -y arc-treasury-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "xyz-honeycheck-arc-treasury-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "arc-treasury-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add xyz-honeycheck-arc-treasury-mcp --command npx --arg -y --arg arc-treasury-mcp
```

### Hermes

```yaml
mcp_servers:
  xyz-honeycheck-arc-treasury-mcp:
    command: "npx"
    args: ["-y", "arc-treasury-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "xyz-honeycheck-arc-treasury-mcp": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "arc-treasury-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add xyz-honeycheck-arc-treasury-mcp -t stdio -c npx -a -y arc-treasury-mcp
```

### Other

```json
{
  "mcpServers": {
    "xyz-honeycheck-arc-treasury-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "arc-treasury-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-19 (score 65)

First indexed and scored.

## MCP tools (3)

### `arc_lending_rates` (~62 tokens)

What USDC and EURC earn and cost to borrow on Arc (chain 5042), every market on Aave v4 and Morpho, read from the contracts rather than an index. Includes utilisation and the size of each pool. Paid per call.

### `arc_best_yield` (~104 tokens)

Where a specific amount of USDC earns the most on Arc once the deposit's own effect on the pool is counted. A quoted rate is what a pool pays as it stands, and a high rate in a small pool collapses when real size lands in it; this ranks every market by the rate after your deposit. Call this before moving treasury. Paid per call.

Input parameters:

- `size` (number, required): How much USDC, in dollars, for example 100000.

### `gateway_activity_arc` (~42 tokens)

Circle Gateway activity on Arc measured at the contract: spends, deposits and batch settlements, where the money went, and how much of it is one address. Free.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/xyz-honeycheck-arc-treasury-mcp/arc-treasury-mcp#diagnostics

## Score history

- 2026-09-21: 65
- 2026-09-20: 65
- 2026-09-19: 65

## Common questions

### What is the Arc Treasury MCP server?

Arc Treasury is an MCP server listed in the public MCP registry as xyz.honeycheck/arc-treasury-mcp. What USDC and EURC really earn on Arc, by deposit size: Aave v4 and Morpho read directly. x402. This page covers its npm package (arc-treasury-mcp).

### Is the Arc Treasury MCP server safe to use?

Arc Treasury scores 65 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 21 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Arc Treasury MCP server expose?

Arc Treasury exposes 3 tools: arc_lending_rates, arc_best_yield, gateway_activity_arc. Their descriptions and schemas cost roughly 208 tokens of context every time the server is loaded.

### Is the Arc Treasury MCP server still maintained?

Arc Treasury is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Arc Treasury MCP server under?

Arc Treasury declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/arc-treasury-mcp
- Socket report: https://socket.dev/npm/package/arc-treasury-mcp
- Website: https://gmtrenchor.memeogatchi.workers.dev/
- Changelog RSS feed: https://verifymcp.io/servers/xyz-honeycheck-arc-treasury-mcp/arc-treasury-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/xyz-honeycheck-arc-treasury-mcp/arc-treasury-mcp.json
- HTML version of this page: https://verifymcp.io/servers/xyz-honeycheck-arc-treasury-mcp/arc-treasury-mcp