Borrowing it
Nothing to install: this file belongs to LedgerHQ/ledger-live. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/LedgerHQ/ledger-live/develop/.agents/skills/cloud-sync-module/SKILL.mdgit clone --depth 1 https://github.com/LedgerHQ/ledger-liveWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ledgerhq/ledger-live/cloud-sync-module)<a href="https://agentmods.dev/skills/ledgerhq/ledger-live/cloud-sync-module"><img src="https://agentmods.dev/badge/skills/ledgerhq/ledger-live/cloud-sync-module/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ledgerhq/ledger-live/cloud-sync-module"><img src="https://agentmods.dev/badge/skills/ledgerhq/ledger-live/cloud-sync-module.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 54 Skill allows unbounded resource consumption (API calls, storage, compute). Without rate limits or quotas, a compromised or misbehaving agent can cause denial-of-service or cost overruns.Fix: Set explicit rate limits, timeouts, and resource quotas for API calls, file operations, and compute. Implement circuit breakers for runaway loops.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00088 | $0.02332 |
| Opus 5.5 | $0.00035 | $0.00933 |
| Sonnet 5.5 | $0.00018 | $0.00466 |
| Haiku 4.5 | $0.00009 | $0.00233 |
Grade A, and why
cloud-sync-module scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Authoring a cloudSyncModule.ts
A module reconciles LocalState (what the app holds, from Redux) with DistantState (what is
stored encrypted in Cloud Sync). createAggregator composes every module into one blob shared by all
of the user's instances (LWD, LWM, web-tools).
Concepts: 05-wallet-sync-data-manager,
then 06-watch-loop for when each hook fires. Steps and a
video: cookbook. Testing
layers: test-strategy. Contract:
@shared/cloud-sync-module. Copy
account-name (simplest);
accounts for async + injected ctx;
recent-addresses for the
tolerant-list schema only — its .transform() use is a known bug (see below).
The three hooks
| Hook | Sync? | Runs | Must return |
|---|---|---|---|
diffLocalToDistant(local, latest) |
sync | every loop tick (~10s) before push | { hasChanges, nextState } — what to push |
resolveIncrementalUpdate(local, latest, incoming) |
async | on pull and every tick with incoming === latest |
{ hasChanges: false } or { hasChanges: true, update } |
applyUpdate(local, update) |
sync | only when the above reported changes | the new LocalState (pure, no mutation) |
Live under domain/entity/<name>/src/cloudSyncModule.ts beside schema.ts + slice.ts (see
domain/entity/README.md). Type it
CloudSyncDataManager<LocalState, Update, typeof schema>, with hasChanges: false as const so the
union narrows. A 4th generic DistantState defaults to z.infer<Schema> — pass the raw wire type
explicitly if your schema transforms, since that is what the hooks actually receive.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 141 lines · 88 tokens per session scan A 06e836d66de2
cloud-sync-module is a skill published in the GitHub repository LedgerHQ/ledger-live (624 stars, last pushed yesterday), licensed MIT. It adds 88 tokens to every session and 2,332 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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