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Client Identity Domain (@domain/entity-client-identity) · ledgerhq | DecimalAI

codingby ledgerhq

Client Identity Domain (@domain/entity-client-identity)

ledgerhq/client-ids

Source ledgerhq/ledger-live ↗License MIT

Privacy-protected ID management with @domain/entity-client-identity — DeviceId, UserId, DatadogId, export-rules.json

SkillScore86Maintained

Automatic

Coding pack

Last verified 8/16/2026

What it changes

Passed 18 of 21 test cases with the skill, and 4 of 21 without it.

Without skill18%

With skill86%

Checks it passed that the model alone missed

Returns [AccountId:REDACTED] from toJSON.
Returns [AccountId:REDACTED] from toString.
Encapsulates internal string in a Symbol property.

and 24 more in the full report

16 fixed3 passed either way2 still failing1 broke

Pass-rate lift: +68 pp
Tokens: -9%
Agent turns: 0%
Response time: -53%

Model gemini-3.6-flashMeasured 8/16/2026v119 of 22 cases passed with skill · 21 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/ledgerhq-client-ids/SKILL.md https://app.decimal.ai/s/ledgerhq-client-ids/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add ledgerhq-client-ids, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/ledgerhq-client-ids/ and pins it in .decimal/skills.lock

decimalai skills add ledgerhq-client-ids

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/ledgerhq-client-ids/SKILL.md https://app.decimal.ai/s/ledgerhq-client-ids/SKILL.md

Raw file: /s/ledgerhq-client-ids/SKILL.md ↗ · machine-readable summary at /s/ledgerhq-client-ids.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 15 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 15

Prompt

What is the npm package name and file directory location for the primary client identity entity package containing DeviceId and UserId?

What was checked, without and with the skill
Checked	Without skill	With skill
Identifies package name as @domain/entity-client-identity.	Missed	Passed
Identifies package location as domain/entity/client-identity/.	Missed	Passed

case-11 · gemini-3.6-flash · 8/16/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md75 linessingle file

Client Identity Domain (`@domain/entity-client-identity`)

Privacy & Security

Sensitive identifiers (DeviceId, UserId, DatadogId) must always use the domain entity package:

Never use raw string IDs for devices, users, or analytics.
Always use DeviceId, UserId, or DatadogId classes from @domain/entity-client-identity.
ID values are only accessible through explicit export methods (e.g., exportUserIdForSomething()).
Every export method must be allowlisted in domain/entity/client-identity/export-rules.json.
Export IDs only at system boundaries (API calls, persistence) — never in the middle of processing.
toString() and toJSON() return [DeviceId:REDACTED] by design.

Package layout

Package	Location	What it contains
`@domain/entity-client-identity`	`domain/entity/client-identity/`	DeviceId, UserId, DatadogId classes + Redux slice, selectors, persistence
`@domain/api-push-devices`	`domain/api/push-devices/`	RTK Query mutation + Redux sync middleware

Core Principles

1. All ID Usage Must Go Through This Package

Never create raw string IDs for devices, users, or analytics
Always use DeviceId, UserId, or DatadogId classes from @domain/entity-client-identity
IDs are protected by Symbols and automatically redacted in logs/JSON

2. Privacy Protection

IDs are stored in Symbol fields to prevent accidental access
toString() and toJSON() return [DeviceId:REDACTED] by default
Actual ID values are only accessible through explicit export methods

3. Explicit Use Cases

Every ID usage must be explicitly declared through a dedicated export method (e.g., exportUserIdForSomethingSomething())
Export methods represent specific, documented use cases and can only be called from allowlisted files

Track record

Benchmark

18 / 21

test cases passed, vs 4 / 21 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

ledgerhq / ledger-live

.agents/skills/client-ids/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.