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 dev-toolings/superpowers-symfony --skill doctrine-migrationsgit clone --depth 1 https://github.com/dev-toolings/superpowers-symfonyWrote 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/dev-toolings/superpowers-symfony/doctrine-migrations)<a href="https://agentmods.dev/skills/dev-toolings/superpowers-symfony/doctrine-migrations"><img src="https://agentmods.dev/badge/skills/dev-toolings/superpowers-symfony/doctrine-migrations/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/dev-toolings/superpowers-symfony/doctrine-migrations"><img src="https://agentmods.dev/badge/skills/dev-toolings/superpowers-symfony/doctrine-migrations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00033 | $0.00236 |
| Opus 5 | $0.00016 | $0.00118 |
| Sonnet 5 | $0.00007 | $0.00047 |
| Haiku 4.5 | $0.00003 | $0.00024 |
Grade A, and why
symfony:doctrine-migrations 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 10d 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
Doctrine Migrations (Symfony)
Use when
- Designing entity relations or schema evolution.
- Improving Doctrine correctness/performance.
Default workflow
- Model ownership/cardinality and transactional boundaries.
- Apply mapping/schema changes with migration safety.
- Tune fetch/query behavior for hot paths.
- Verify lifecycle behavior with targeted tests.
Guardrails
- Keep owning/inverse sides coherent.
- Avoid destructive migration jumps in one release.
- Eliminate accidental N+1 and over-fetching.
Progressive disclosure
- Use this file for execution posture and risk controls.
- Open references when deep implementation details are needed.
Output contract
- Entity/migration changes.
- Integrity and performance decisions.
- Validation outcomes and rollback notes.
References
reference.mddocs/complexity-tiers.md
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 42 lines · 33 tokens per session scan A d466e3e01c60
symfony:doctrine-migrations is a skill published in the GitHub repository dev-toolings/superpowers-symfony (209 stars, last pushed 9d ago), licensed MIT. It adds 33 tokens to every session and 236 once invoked, about $0.0002 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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