Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add jxoesneon/Ciel --skill crypto-and-trading-securitygit clone --depth 1 https://github.com/jxoesneon/CielWrote 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/jxoesneon/ciel/crypto-and-trading-security)<a href="https://agentmods.dev/skills/jxoesneon/ciel/crypto-and-trading-security"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/crypto-and-trading-security/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/jxoesneon/ciel/crypto-and-trading-security"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/crypto-and-trading-security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00022 | $0.00537 |
| Opus 5 | $0.00011 | $0.00269 |
| Sonnet 5 | $0.00004 | $0.00107 |
| Haiku 4.5 | $0.00002 | $0.00054 |
Grade A, and why
crypto-and-trading-security 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 7d 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.
What it actually says
CIEL ADAPTATION: Crypto & Trading Security (The Asset Layer)
This skill manages the extreme threat model of autonomous trading agents and DeFi contracts.
Trading Agent Guardrails
- Injection Shield: Sanitize all on-chain data (Token names, pair labels) to prevent instruction overrides.
- Hard Spend Limits: Enforce
MAX_SINGLE_TX_USDandMAX_DAILY_SPEND_USDoutside the LLM context. - Simulation Mandate: ALWAYS
eth_callor simulate a transaction before sending. checkactual_out >= min_amount_out. - Circuit Breaker: Halt agent execution on > 3 consecutive losses or > 5% hourly drawdown.
Solidity Integrity (DeFi)
- CEI Order: Checks-Effects-Interactions. update state before transferring tokens.
- Reentrancy: Use
nonReentranton all external transfer entry points. - Decimal Safety: Prohibit assuming 18 decimals. Query
decimals()at runtime and cache by(chain_id, token_address). - WAD Normalization: Standardize internal math to 18 decimals internally.
Wallet Isolation
- Hot Wallet: Agent MUST only have access to a dedicated hot wallet. PROHIBIT access to treasury or primary keys.
- Private RPC: Use
flashbotsor protected RPCs to prevent frontrunning/MEV.
Anti-Patterns
- Model-Controlled Budget: Letting the LLM decide its own spend limits.
- Naive mulDiv: Performing
a * b / cwithout checking for overflow in high-value reserves. - Silent Revert: Catching transaction errors without halting the agent or notifying the user.
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.
- 7d ago First seen · 51 lines · 22 tokens per session scan A 223a9fb421a4
crypto-and-trading-security is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 4d ago), licensed Apache-2.0. It adds 22 tokens to every session and 537 once invoked, about $0.0001 per session on Opus 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 2026-09-03.
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