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 jeffsenso/prestashop-skills --skill legacy-to-symfony-migrationgit clone --depth 1 https://github.com/jeffsenso/prestashop-skillsWrote 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/jeffsenso/prestashop-skills/legacy-to-symfony-migration)<a href="https://agentmods.dev/skills/jeffsenso/prestashop-skills/legacy-to-symfony-migration"><img src="https://agentmods.dev/badge/skills/jeffsenso/prestashop-skills/legacy-to-symfony-migration/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/jeffsenso/prestashop-skills/legacy-to-symfony-migration"><img src="https://agentmods.dev/badge/skills/jeffsenso/prestashop-skills/legacy-to-symfony-migration.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00070 | $0.00821 |
| Opus 5 | $0.00035 | $0.00411 |
| Sonnet 5 | $0.00014 | $0.00164 |
| Haiku 4.5 | $0.00007 | $0.00082 |
Grade A, and why
legacy-to-symfony-migration 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 12d 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 — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Legacy to Symfony/CQRS Migration Skill
Read @.ai/Component/Migration/CONTEXT.md for conventions, reference pages, dependency graph, and conditional activation matrix.
This skill is an orchestrator: each step file explains why the step exists, when to enter it, what gates it, and which standalone skills to invoke. The procedural detail lives in the standalone skills themselves and in the relevant Component CONTEXT.md.
When to use this skill
Trigger when asked to:
- "Migrate the Xxx admin page to Symfony"
- "Create CQRS for the Xxx domain"
- "Add a Symfony form for Xxx"
- "Migrate AdminXxxController"
Sub-agent delegation (Claude Code)
When the parent agent supports sub-agents (Claude Code does; other tools currently do not), step-00 audits are particularly suited to delegation: each audit reads a large legacy file and emits a structured artifact, so the parent can offload the read cost without losing context. The migration manifest synthesises both audits and acts as the shared context surface for every later step. Skills tagged subagent: recommended or subagent: optional in their frontmatter are candidates; tools without a sub-agent primitive simply run them in-line — behaviour is identical from the user's standpoint.
Phase index
| # | File | Title | Deliverable |
|---|---|---|---|
| 0 | step-00-audit.md | Audit | Field map, action list, milestone decision |
| 1 | step-01-feature-flag.md | Feature Flag | feature_flag.xml entry (beta/state=0) — set up early so handlers can carry conditional code |
| 2 | step-02-domain-layer.md | Domain Layer | Commands, Queries, ValueObjects, Exceptions, Handler interfaces |
| 3 | step-03-adapter-layer.md | Adapter Layer | Repository, Handlers, DI registration |
| 4 | step-04-behat-tests.md | Behat Tests | Integration test coverage for CQRS — gate before UI work |
| 5 | step-05-listing-page.md | Listing page (vertical slice) | Working listing page: grid + controller actions + listing routes + index template + listing JS |
| 6 | step-06-form-page.md | Form page (vertical slice) | Working add/edit page: form type + data handling + controller actions + form routes + form template + form JS |
| 7 | step-07-playwright-tests.md | Playwright Tests | UI test campaigns per feature area |
| 8 | step-08-general-availability.md | General Availability | Promote flag to stable; optional upgrade SQL handoff |
| 9 | step-09-removal.md | Removal | Track legacy controller removal in next major |
What ships with it
10 files 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.
- step-00-audit.md 2.5 KB
- step-01-feature-flag.md 2.1 KB
- step-02-domain-layer.md 2.3 KB
- step-03-adapter-layer.md 2.3 KB
- step-04-behat-tests.md 2.3 KB
- step-05-listing-page.md 3.7 KB
- step-06-form-page.md 4.0 KB
- step-07-playwright-tests.md 2.3 KB
- step-08-general-availability.md 2.1 KB
- step-09-removal.md 2.0 KB
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.
- 12d ago First seen · 46 lines · 70 tokens per session scan A b83087c1b248
legacy-to-symfony-migration is a skill published in the GitHub repository jeffsenso/prestashop-skills (5 stars, last pushed 18d ago), licensed MIT. It adds 70 tokens to every session and 821 once invoked, about $0.0003 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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