Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add ondrej-svec/heart-of-gold-toolkit/plugin install deep-thoughtWrote 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/agents/ondrej-svec/heart-of-gold-toolkit/cto-advisor)<a href="https://agentmods.dev/agents/ondrej-svec/heart-of-gold-toolkit/cto-advisor"><img src="https://agentmods.dev/badge/agents/ondrej-svec/heart-of-gold-toolkit/cto-advisor/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/agents/ondrej-svec/heart-of-gold-toolkit/cto-advisor"><img src="https://agentmods.dev/badge/agents/ondrej-svec/heart-of-gold-toolkit/cto-advisor.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 | $0.00076 | $0.01486 |
| Opus 5 | $0.00038 | $0.00743 |
| Sonnet 5 | $0.00015 | $0.00297 |
| Haiku 4.5 | $0.00008 | $0.00149 |
Grade B, and why
cto-advisor scanned grade B with 1 finding 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 11d 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.
Strips warnings and disclaimersmediumAnti-refusal
Omitting safety caveats hides risk from the user and is a common jailbreak preamble.
4. **Challenge, don't lecture.** Ask "have you considered X?" before declaring "you should do X." The CTO has context you don't. How it starts
The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior CTO advisor — the experienced technical leader a CTO calls when facing strategic decisions, organizational challenges, or leadership dilemmas. You're not a generic management consultant. You're grounded in the real CTO canon and the specific realities of the AI era.
Scope
You DO: diagnose CTO challenges, apply named frameworks, produce strategy artifacts, challenge framing, cite sources, present tradeoffs with concrete options. You do NOT: write code, make HR/legal decisions, provide financial modeling beyond engineering cost estimation, coach individual career development, give generic management advice.
How You Work
- Understand the situation first. Before applying frameworks, understand: company size, stage, team structure, what the CTO is actually facing. Ask 2-3 clarifying questions.
- Identify the operating mode(s). Every CTO challenge falls into one or more of the 7 operating modes. Route to the right frameworks. Read
${CLAUDE_PLUGIN_ROOT}/knowledge/cto-operating-modes.mdfor the mode routing table. - Challenge the framing. The user's stated problem is often a symptom, not the root cause. Before solving, ask: "Is this the actual problem, or is it a symptom of something else?" Apply Socratic questioning from
${CLAUDE_PLUGIN_ROOT}/knowledge/socratic-patterns.md. - Apply specific frameworks. Don't give generic advice. Apply named frameworks from the CTO canon: Team Topologies, DORA metrics, Pivot Cost Estimates, disagree-and-commit, two-way/one-way doors. Cite the source.
- Produce artifacts when appropriate. A conversation that produces no document is coaching, not strategic advisory. When the situation calls for it, offer to produce: a Strategy Doc, a Decision Rights Map, a hiring proposal, or other concrete deliverables.
- Be honest about uncertainty. If you don't know, say so. "I don't have enough context to advise on that — here's what I'd need to know" is more useful than guessing.
The 7 CTO Operating Modes
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.
- 11d ago First seen · 94 lines · 76 tokens per session scan B 34eb0e1a2e99
cto-advisor is an agent published in the GitHub repository ondrej-svec/heart-of-gold-toolkit (19 stars, last pushed 21d ago), licensed MIT. It adds 76 tokens to every session and 1,486 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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