ledger-dmk-implementation

Execute Ledger Device Management Kit (DMK) signing operations safely: initialize the SDK, establish a device session, verify device state, open the correct chain app, perform signing or device management operations, and return the result. Use when a developer needs to implement a signing operation (transaction, message, typed data), derive or retrieve an address from a Ledger device, send any command to a Ledger device, or perform device management operations such as genuine check, app install, or app uninstall.

1.38x

Quality

—

Does it follow best practices?

Impact

98%

1.38x

Average score across 3 eval scenarios

Securityby

Advisory

Suggest reviewing before use

Evaluation results

95%

20%

Ledger Ethereum Signing Module

Ethereum signing module with Clear Signing and error classification

Criteria

Without context

With context

Browser transport import

100%

DMK singleton pattern

100%

No setStub in production

100%

originToken for Clear Signing

100%

Derivation path format

100%

Typed data pre-flight validation

100%

Observable subscription for signing

100%

Rejection detection before error

41%

100%

Two-field error output

100%

Rejection as distinct outcome

100%

context-module dependency

100%

Correct output field extraction

100%

37%

100%

Bitcoin Hardware Wallet Integration

Bitcoin PSBT signing and verified receive address

Criteria

Without context

With context

getWalletAddress for receive

100%

checkOnDevice: true for address

100%

signPsbt not signTransaction

100%

SCREAMING_CASE descriptor template

100%

Correct BTC signer package

100%

Derivation path no m/ prefix

100%

DefaultWallet wrapper

100%

SignerBtcBuilder with dmk+sessionId

100%

WebHID browser transport

100%

output.address extraction

100%

No setStub in production code

100%

62%

Ledger Device Security Audit CLI

Node.js CLI genuine check with device management

Criteria

Without context

With context

Node.js transport

30%

100%

listenToAvailableDevices for Node

100%

executeDeviceAction for genuine check

100%

GenuineCheckDeviceAction import

100%

AllowSecureConnection handling

40%

100%

Two-field error output

100%

stdout result, stderr prompts

100%

DMK singleton per process

100%

Session disconnect on exit

37%

100%

No setStub call

100%

output.isGenuine extraction

100%

package.json type module

100%

Repository: LedgerHQ/agent-skills
Commit: c9739bb

Evaluated: 27 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Ledger Ethereum Signing Module Bitcoin Hardware Wallet Integration Ledger Device Security Audit CLI

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