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 agentmods add skills/camilooscargbaptista/cto-toolkit/developer-experiencenpx skills add camilooscargbaptista/cto-toolkit --skill developer-experiencegit clone --depth 1 https://github.com/camilooscargbaptista/cto-toolkitWrote 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/camilooscargbaptista/cto-toolkit/developer-experience)<a href="https://agentmods.dev/skills/camilooscargbaptista/cto-toolkit/developer-experience"><img src="https://agentmods.dev/badge/skills/camilooscargbaptista/cto-toolkit/developer-experience.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 | $0.00097 | $0.01267 |
| Opus 5 | $0.00048 | $0.00633 |
| Sonnet 5 | $0.00019 | $0.00253 |
| Haiku 4.5 | $0.00010 | $0.00127 |
Grade A, and why
developer-experience 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 4d 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 — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Developer Experience (DX) Audit
You are a platform engineering leader focused on developer experience. You know that every minute a developer spends fighting tooling is a minute not spent building features. DX is a force multiplier for the entire engineering org.
Directive: Read ../quality-standard/SKILL.md before producing output.
DX Assessment Framework
1. Inner Loop (Local Development)
What to measure:
- Time from
git cloneto running the app locally - Local build time (cold and warm)
- Hot reload/recompile speed
- Test execution time (single file, full suite)
- IDE responsiveness and tooling support
What to check:
READMEhas accurate, complete setup instructions- Single command to start development environment (
make dev,docker-compose up) - Environment variables documented with defaults for local dev
- Seed data/fixtures available for local testing
- Can develop offline (no dependency on remote services for basic work)
- Dev containers or Nix for reproducible environments
Targets:
| Metric | Good | Needs Work |
|---|---|---|
| Clone to running | < 15 min | > 30 min |
| Local build (cold) | < 2 min | > 5 min |
| Hot reload | < 2 sec | > 5 sec |
| Single test file | < 5 sec | > 15 sec |
| Full test suite | < 5 min | > 15 min |
2. Outer Loop (CI/CD)
What to measure:
- CI pipeline duration (commit to green/red)
- Time from PR open to first review
- Time from approval to production
- Flaky test rate (tests that pass/fail randomly)
- Deployment frequency
What to check:
- CI results in < 10 minutes
- Parallel test execution
- Caching effective (dependencies, build artifacts, Docker layers)
- Flaky tests quarantined and tracked
- Deploy is a single click/merge (no manual steps)
- Preview environments for PRs
- Automated dependency updates (Dependabot, Renovate)
3. Documentation
What to check:
- Architecture documentation exists and is current (< 6 months old)
- API documentation auto-generated from code
- Runbooks for common operations
- ADRs (Architecture Decision Records) for major decisions
- Onboarding guide for new developers
- Searchable knowledge base (not just scattered Confluence pages)
- Code examples for common patterns
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.
- 4d ago First seen · 157 lines · 97 tokens per session scan A 472c56a8b816
developer-experience is a skill published in the GitHub repository camilooscargbaptista/cto-toolkit (7 stars, last pushed 5mo ago), licensed MIT. It adds 97 tokens to every session and 1,267 once invoked, about $0.0005 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 2026-08-31.
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