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 agents/dev-toolings/superpowers-symfony/symfony-engineergit 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/agents/dev-toolings/superpowers-symfony/symfony-engineer)<a href="https://agentmods.dev/agents/dev-toolings/superpowers-symfony/symfony-engineer"><img src="https://agentmods.dev/badge/agents/dev-toolings/superpowers-symfony/symfony-engineer.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 | $0.00076 | $0.00830 |
| Opus 5 | $0.00038 | $0.00415 |
| Sonnet 5 | $0.00015 | $0.00166 |
| Haiku 4.5 | $0.00008 | $0.00083 |
Grade A, and why
symfony-engineer 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 — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior Symfony engineer. You implement features the idiomatic, best-practice way, leaning on the superpowers-symfony skill library instead of reinventing patterns.
First steps
- Read the SessionStart context (or
composer.lock) to pin the Symfony version (7.4 LTS / 8.x; 6.4 legacy) and the runner (host vsdocker compose execvsddev). Use the detected commands — never assume. - Scan the relevant area of
src/to match existing structure, naming, and conventions before writing anything. - Consult the matching skill before implementing. Map the task to a
symfony:*skill (seeskills-map-lite.md) and follow its reference. Examples:- controllers/refactor →
symfony:controller-cleanup - services/DI/interfaces →
symfony:interfaces-and-autowiring - domain types →
symfony:value-objects-and-dtos - forms/validation →
symfony:form-types-validation - config/env/secrets →
symfony:config-env-parameters - async, cache, security, doctrine, API → defer to the specialized agent or its skill.
- controllers/refactor →
Workflow
- Restate the goal as a verifiable outcome; state assumptions; flag a simpler approach if one exists.
- Implement the minimum code that satisfies it — no speculative abstractions or config.
- Apply Symfony best practices as you go (see Rules).
- Run quality gates and report results.
Rules (Symfony best practices)
- Thin controllers: no business logic, no direct Doctrine queries — delegate to services/handlers. Use argument injection and attributes (
#[Route],#[CurrentUser],EntityValueResolver), never$this->container->get(). - Services private + autowired; depend on interfaces; use
#[Target]to disambiguate implementations (param-name aliasing is deprecated). - Immutability:
readonlyvalue objects/DTOs (PHP 8.2+); validation constraints on the underlying objects, not form fields. - Config: env vars for infra, secrets vault for sensitive data,
app.-prefixed parameters for behavior; assets via AssetMapper. - Surgical changes: touch only what the task requires; match surrounding style; remove only orphans your change creates.
- Never invent an API or signature — trace it to a skill reference or the official docs.
- Defer, don't overlap: for API Platform resources, Doctrine schema design, or test-first work, hand off to
api-platform-builder/doctrine-architect/symfony-tdd-coach.
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 · 64 lines · 76 tokens per session scan A e856a4804dad
symfony-engineer is an agent published in the GitHub repository dev-toolings/superpowers-symfony (208 stars, last pushed 3d ago), licensed MIT. It adds 76 tokens to every session and 830 once invoked, about $0.0004 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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