# io.github.cdrn/sigil (npm · sigild)

Local keystore + MCP server. Claude can sign EVM transactions but never sees the private key.

- Trust score: 78/100 (medium)
- Change this week: −15
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `sigild`: 78/100 (this document), [markdown](https://verifymcp.io/servers/cdrn-sigil/sigild.md), [page](https://verifymcp.io/servers/cdrn-sigil/sigild)

## Channel facts

- Registry: `npm`
- Package: `sigild`
- Version: `0.0.6`
- 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 2026-08-03.

- **Supply Chain Security**: 88/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 4 of 4 dependencies flagged as unhealthy (4 deprecated).
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to cdrn/sigil).
  - Clear OSI-approved license (Apache-2.0).
  - Actively maintained (last published 25 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 356 tokens (~89/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **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.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add cdrn-sigil -- npx -y sigild
```

### Codex

```bash
codex mcp add cdrn-sigil -- npx -y sigild
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cdrn-sigil": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "sigild"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cdrn-sigil --command npx --arg -y --arg sigild
```

### Hermes

```yaml
mcp_servers:
  cdrn-sigil:
    command: "npx"
    args: ["-y", "sigild"]
```

### Other

```json
{
  "mcpServers": {
    "cdrn-sigil": {
      "command": "npx",
      "args": [
        "-y",
        "sigild"
      ]
    }
  }
}
```

## 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.

### 2026-08-03 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 77, +15)

- [security improvement] Malware scan: unverified → pass
- [functional regression] Dependency health: 0.88 → 0.00
- [functional improvement] Stability: unverified → 0.20

### 2026-07-31 (score 62, −13)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 75, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 93, +34)

- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: excellent

### 2026-07-26 (score 59)

First indexed and scored.

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (4)

### `sigil_list_portals` (~44 tokens)

List the signing portals currently loaded in sigil. Returns each portal handle (e.g. "eth:executor"), its kind, and the public address it controls.

### `sigil_eth_sign_message` (~100 tokens)

Sign an EIP-191 personal_sign message with the named portal. The message is supplied as 0x-prefixed hex bytes (encode strings to UTF-8 first). Returns the 65-byte r||s||v signature as 0x-prefixed hex.

Input parameters:

- `message` (string, required): 0x-prefixed hex of the bytes to sign.
- `portal` (string, required): Portal handle, e.g. "eth:executor".

### `sigil_eth_sign_transaction` (~138 tokens)

Sign an Ethereum transaction (legacy or EIP-1559) with the named portal. Returns the signed transaction as 0x-prefixed hex, ready for eth_sendRawTransaction.

Input parameters:

- `portal` (string, required): Portal handle.
- `tx` (object, required): Transaction fields. type="legacy" requires {chainId, nonce, gasPrice, gasLimit, to, value, data}. type="eip1559" requires {chainId, nonce, maxPriorityFeePerGas, maxFeePerGas, gasLimit, to, value, dat…

### `sigil_eth_sign_typed_data` (~74 tokens)

Sign an EIP-712 typed data structure with the named portal. Returns the 65-byte signature as 0x-prefixed hex.

Input parameters:

- `portal` (string, required): Portal handle.
- `typedData` (object, required): EIP-712 typed data: {types, primaryType, domain, message}.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/cdrn-sigil/sigild#diagnostics

## Score history

- 2026-08-03: 78
- 2026-08-02: 77
- 2026-08-01: 62
- 2026-07-31: 62
- 2026-07-30: 75
- 2026-07-28: 93
- 2026-07-27: 93
- 2026-07-26: 59

## Links

- npm package: https://www.npmjs.com/package/sigild
- Socket report: https://socket.dev/npm/package/sigild
- Repository: https://github.com/cdrn/sigil
- Changelog RSS feed: https://verifymcp.io/servers/cdrn-sigil/sigild/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/cdrn-sigil/sigild/changelog.json
- HTML version of this page: https://verifymcp.io/servers/cdrn-sigil/sigild