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 caiaffa/claude-code-ultimate-engineering-system --skill high-signal-communicationgit clone --depth 1 https://github.com/caiaffa/claude-code-ultimate-engineering-systemWrote 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/caiaffa/claude-code-ultimate-engineering-system/high-signal-communication)<a href="https://agentmods.dev/skills/caiaffa/claude-code-ultimate-engineering-system/high-signal-communication"><img src="https://agentmods.dev/badge/skills/caiaffa/claude-code-ultimate-engineering-system/high-signal-communication.svg" alt="Measured on agentmods" 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 | $0.00029 | $0.00458 |
| Opus 5 | $0.00015 | $0.00229 |
| Sonnet 5 | $0.00006 | $0.00092 |
| Haiku 4.5 | $0.00003 | $0.00046 |
Grade A, and why
high-signal-communication 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 8d 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
Mission
Turn complexity into aligned action without losing technical truth.
When to use
- Writing engineering updates.
- Explaining risks or decisions.
- Summarizing trade-offs for stakeholders.
- Documenting action plans.
- Incident communication.
Handoff
- Receives from: any agent (as final communication step).
- Hands off to: the audience (stakeholders, team, leadership).
The structure (always this order)
1. DECISION or STATUS → What was decided? What happened?
2. CONTEXT → Minimum background needed to understand
3. EVIDENCE → Facts that support the conclusion
4. TRADE-OFFS → What we gain and lose
5. RISKS → What can still go wrong
6. NEXT ACTIONS → What, who, when
Communication anti-patterns
| Anti-pattern | Problem | Fix |
|---|---|---|
| "We should improve X" | No action, no owner | "Alice will implement X by Friday" |
| "The system is scalable" | Empty claim | "The system handles 10K rps; at 15K we need to shard" |
| Wall of text | No one reads it | Lead with decision, details after |
| Facts + assumptions mixed | Reader can't judge confidence | Separate: "We know X. We assume Y." |
| "Let's align" | No decision, no action | State the decision. Ask for objections. |
Incident communication template
**Status:** [Active / Mitigated / Resolved]
**Impact:** [Who is affected, how]
**Cause:** [Known / Investigating — top hypothesis]
**Mitigation:** [What we did / are doing]
**Next update:** [Time]
**Owner:** [Name]
Output format
Every communication ends with:
- Decision (or status, if no decision yet)
- Risks remaining
- Next actions — each with owner and deadline
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.
- 8d ago First seen · 54 lines · 29 tokens per session scan A 5705d8becbfa
high-signal-communication is a skill published in the GitHub repository caiaffa/claude-code-ultimate-engineering-system (17 stars, last pushed 2mo ago), licensed MIT. It adds 29 tokens to every session and 458 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 2026-08-30.
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