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/dev-toolings/superpowers-symfony/effective-contextnpx skills add dev-toolings/superpowers-symfony --skill effective-contextgit 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/effective-context)<a href="https://agentmods.dev/skills/dev-toolings/superpowers-symfony/effective-context"><img src="https://agentmods.dev/badge/skills/dev-toolings/superpowers-symfony/effective-context.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 | $0.00022 | $0.00222 |
| Opus 5 | $0.00011 | $0.00111 |
| Sonnet 5 | $0.00004 | $0.00044 |
| Haiku 4.5 | $0.00002 | $0.00022 |
Grade A, and why
symfony:effective-context 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.
This is a copy
88% identical to symfony:brainstorming — 7 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Effective Context (Symfony)
Use when
- Refining architecture/workflows/context handling in Symfony projects.
- Planning and executing medium/complex changes safely.
Default workflow
- Establish current boundaries, constraints, and coupling points.
- Propose smallest coherent architectural adjustment.
- Execute in checkpoints with validation at each stage.
- Summarize tradeoffs and follow-up backlog.
Guardrails
- Use existing project patterns by default.
- Avoid broad refactors without explicit need.
- Keep decision log clear and auditable.
Progressive disclosure
- Use this file for execution posture and risk controls.
- Open references when deep implementation details are needed.
Output contract
- Architecture/workflow changes.
- Checkpoint validation outcomes.
- Residual risks and next steps.
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.
- 4d ago First seen · 40 lines · 22 tokens per session scan A 0852bc3072a2
symfony:effective-context is a skill published in the GitHub repository dev-toolings/superpowers-symfony (208 stars, last pushed 3d ago), licensed MIT. It adds 22 tokens to every session and 222 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to symfony:brainstorming, differing in 7 lines, and is treated as a copy.
Other skills, from other repositories
application
Use when creating application layer artifacts for a NestJS bounded context — use cases, CQRS command/query handlers, DTOs, ports (cross-module interfaces), application services, or read model projections. Supports three patterns: plain UseCase (A), CQRS native (B), and Handler-as-Orchestrator (C).
domain
Use when creating domain layer artifacts for a NestJS bounded context — entities (AggregateRoot), value objects, domain events, repository interfaces, domain services, validators, or data builders. Covers Hexagonal Architecture + DDD patterns with NestJS CQRS native event support.
event-listeners
Use when creating event listeners that react to domain events — same-BC side effects (projections, audit, cache), cross-BC reactions (another bounded context consuming events), or bridge listeners (WebSocket broadcast, RabbitMQ publish, email). Covers listener taxonomy, placement rules, Strategy+Gateway pattern for…
infrastructure
Use when creating infrastructure layer artifacts for a NestJS bounded context — Prisma repositories, in-memory repositories (testing), model mappers, NestJS module wiring, adapters (port implementations), or event handler infrastructure. Repository is pure persistence with no event dispatch.
review-subdomain
Reviews a NestJS bounded context implementation for Hexagonal Architecture + DDD + CQRS compliance. Checks 6 dimensions — domain purity, application patterns, infrastructure isolation, presentation concerns, testing coverage, and module organization. Produces a structured Pass/Warning/Fail report.
presentation
Use when creating presentation layer artifacts for a NestJS bounded context — REST controllers, request DTOs with class-validator, Swagger decorators, custom validators, error filters, or API documentation. Covers the HTTP boundary with proper validation and error mapping.