It does not carry deep, version-specific how-to knowledge for Symfony full-stack, API Platform, or Slim — for implementation details it hands off to the research-expert agent and to [[php-http-psr]] for framework-agnostic HTTP.
Laravel is entirely out of scope — any Laravel task routes to the laravel-expert agent. Deep Symfony full-stack work has no dedicated expert in this ecosystem; this skill's job is to flag that gap explicitly to the user rather than improvise.
PHP Ecosystem Reference (Orientation)
Scope (read this first)
This skill is a routing / orientation map, NOT an implementation expert. It answers
"which tool fits this problem, and where do I go next?" It does not carry deep,
version-specific how-to knowledge for Symfony full-stack, API Platform, or Slim.
For actual implementation:
- Laravel → route to the
laravel-expert agent (out of scope here).
- Framework-agnostic HTTP (PSR-7/15/17/18) → use [[php-http-psr]].
- Deep Symfony full-stack → there is no dedicated expert agent; flag this to the user (see boundaries.md).
Agent Workflow (MANDATORY)
Before relying on any detail here, use TeamCreate to spawn 2 agents:
- research-expert - Verify current versions/APIs on symfony.com, api-platform.com, slimframework.com
- explore-codebase - Detect which of these are already in composer.json
This skill orients; the research agent supplies verified specifics before any code.
Overview
| Area |
What it is |
Reference |
| Symfony Components |
Decoupled PHP libraries, each installable standalone via Composer — no full framework needed |
symfony-components.md |
| API Platform 4.3 |
API-first framework built on Symfony (REST, GraphQL, OpenAPI from resource classes) |
api-platform.md |
| Slim 4.15 |
PSR-7/PSR-15 micro-framework for small APIs and services |
slim-framework.md |
| Boundaries |
Where this skill stops and who to route to |
boundaries.md |
Critical Rules
- Orientation only - Never present ecosystem details as authoritative; the research agent verifies before code.
- Standalone ≠ framework - Symfony components run WITHOUT the Symfony framework;
composer require symfony/console is enough.
- HttpFoundation is not PSR-7 - Symfony's HTTP model differs from PSR-7; bridge via
symfony/psr-http-message-bridge ([[php-http-psr]]).
- Laravel is out of scope - Any Laravel task routes to
laravel-expert.
- No deep Symfony expert exists - For full-stack Symfony depth, tell the user explicitly rather than improvising.
Reference Guide
Concepts
| Topic |
Reference |
When to Consult |
| Symfony Components |
symfony-components.md |
Picking a standalone library (CLI, process, events, validation…) |
| API Platform |
api-platform.md |
Building an API-first app on Symfony |
| Slim |
slim-framework.md |
Small PSR-based micro-service or API |
| Boundaries |
boundaries.md |
Deciding whether to route elsewhere |
Quick Reference
Install a standalone Symfony component
composer require symfony/console # CLI apps
composer require symfony/process # run sub-processes
composer require symfony/event-dispatcher
composer require symfony/validator
composer require symfony/serializer
Decision shortcut
| Need |
Route to |
| Full Laravel app |
laravel-expert agent |
| Framework-agnostic HTTP messages/middleware |
[[php-http-psr]] |
| One utility (CLI, events, validation) without a framework |
Symfony component, see symfony-components.md |
| API-first product on Symfony |
API Platform, see api-platform.md |
| Tiny PSR-7 API/service |
Slim, see slim-framework.md |
| Deep Symfony full-stack MVC |
No expert — flag to user (boundaries.md) |
Best Practices
DO
- Use this map to choose a direction, then hand off to the research agent for specifics
- Prefer a single standalone component over a full framework for a narrow need
- State clearly when a task falls outside any available expert
DON'T
- Present version-specific API details from here as verified — they are orientation
- Attempt deep Laravel or deep Symfony full-stack work under this skill
- Assume Symfony HttpFoundation and PSR-7 are interchangeable
1---2name: php-ecosystem-reference-23description: Use when picking a non-Laravel PHP tool — Symfony components, API Platform, or Slim — and routing to implementation. Do NOT use for Laravel (laravel-expert).4---56<objective>7This is a routing/orientation map for the non-Laravel PHP framework ecosystem, not an implementation guide. It answers "which tool fits this problem, and where do I go next?" for three areas: standalone Symfony components (Console, Process, HttpFoundation, EventDispatcher, Validator, Serializer) usable via Composer outside any framework, API Platform 4.3 (API-first on Symfony), and the Slim 4.15 micro-framework.89It does not carry deep, version-specific how-to knowledge for Symfony full-stack, API Platform, or Slim — for implementation details it hands off to the research-expert agent and to [[php-http-psr]] for framework-agnostic HTTP.1011Laravel is entirely out of scope — any Laravel task routes to the laravel-expert agent. Deep Symfony full-stack work has no dedicated expert in this ecosystem; this skill's job is to flag that gap explicitly to the user rather than improvise.12</objective>1314# PHP Ecosystem Reference (Orientation)1516## Scope (read this first)1718This skill is a **routing / orientation map**, NOT an implementation expert. It answers19"which tool fits this problem, and where do I go next?" It does **not** carry deep,20version-specific how-to knowledge for Symfony full-stack, API Platform, or Slim.2122For actual implementation:23- **Laravel** → route to the `laravel-expert` agent (out of scope here).24- **Framework-agnostic HTTP (PSR-7/15/17/18)** → use [[php-http-psr]].25- **Deep Symfony full-stack** → there is **no dedicated expert agent**; flag this to the user (see [boundaries.md](references/boundaries.md)).2627## Agent Workflow (MANDATORY)2829Before relying on any detail here, use `TeamCreate` to spawn 2 agents:30311. **research-expert** - Verify current versions/APIs on symfony.com, api-platform.com, slimframework.com322. **explore-codebase** - Detect which of these are already in composer.json3334This skill orients; the research agent supplies verified specifics before any code.3536---3738## Overview3940| Area | What it is | Reference |41|------|-----------|-----------|42| **Symfony Components** | Decoupled PHP libraries, each installable standalone via Composer — no full framework needed | [symfony-components.md](references/symfony-components.md) |43| **API Platform 4.3** | API-first framework built on Symfony (REST, GraphQL, OpenAPI from resource classes) | [api-platform.md](references/api-platform.md) |44| **Slim 4.15** | PSR-7/PSR-15 micro-framework for small APIs and services | [slim-framework.md](references/slim-framework.md) |45| **Boundaries** | Where this skill stops and who to route to | [boundaries.md](references/boundaries.md) |4647---4849## Critical Rules50511. **Orientation only** - Never present ecosystem details as authoritative; the research agent verifies before code.522. **Standalone ≠ framework** - Symfony components run WITHOUT the Symfony framework; `composer require symfony/console` is enough.533. **HttpFoundation is not PSR-7** - Symfony's HTTP model differs from PSR-7; bridge via `symfony/psr-http-message-bridge` ([[php-http-psr]]).544. **Laravel is out of scope** - Any Laravel task routes to `laravel-expert`.555. **No deep Symfony expert exists** - For full-stack Symfony depth, tell the user explicitly rather than improvising.5657---5859## Reference Guide6061### Concepts6263| Topic | Reference | When to Consult |64|-------|-----------|-----------------|65| **Symfony Components** | [symfony-components.md](references/symfony-components.md) | Picking a standalone library (CLI, process, events, validation…) |66| **API Platform** | [api-platform.md](references/api-platform.md) | Building an API-first app on Symfony |67| **Slim** | [slim-framework.md](references/slim-framework.md) | Small PSR-based micro-service or API |68| **Boundaries** | [boundaries.md](references/boundaries.md) | Deciding whether to route elsewhere |6970---7172## Quick Reference7374### Install a standalone Symfony component7576```bash77composer require symfony/console # CLI apps78composer require symfony/process # run sub-processes79composer require symfony/event-dispatcher80composer require symfony/validator81composer require symfony/serializer82```8384### Decision shortcut8586| Need | Route to |87|------|----------|88| Full Laravel app | `laravel-expert` agent |89| Framework-agnostic HTTP messages/middleware | [[php-http-psr]] |90| One utility (CLI, events, validation) without a framework | Symfony component, see [symfony-components.md](references/symfony-components.md) |91| API-first product on Symfony | API Platform, see [api-platform.md](references/api-platform.md) |92| Tiny PSR-7 API/service | Slim, see [slim-framework.md](references/slim-framework.md) |93| Deep Symfony full-stack MVC | No expert — flag to user ([boundaries.md](references/boundaries.md)) |9495---9697## Best Practices9899### DO100- Use this map to choose a direction, then hand off to the research agent for specifics101- Prefer a single standalone component over a full framework for a narrow need102- State clearly when a task falls outside any available expert103104### DON'T105- Present version-specific API details from here as verified — they are orientation106- Attempt deep Laravel or deep Symfony full-stack work under this skill107- Assume Symfony HttpFoundation and PSR-7 are interchangeable
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