add-processor

A guide for adding custom logic to Sylius resource operations such as creating, updating, or deleting data. The logic can send email, run commands, publish events, or push messages to a queue.

In plain words
What is it for?
Use it when implementing custom processors for Sylius API resources and deciding whether to extend or replace the default operation.
Why use it?
It shows how to add side effects while preserving the normal save or delete behavior when needed.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/guiziweb/guiziweb-plugins/add-processor
Any agent
npx skills add Guiziweb/guiziweb-plugins --skill add-processor
Clone the repo
git clone --depth 1 https://github.com/Guiziweb/guiziweb-plugins

Made for: Claude Code, Codex.

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 947 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00031 $0.00947
Opus 5 $0.00015 $0.00474
Sonnet 5 $0.00006 $0.00189
Haiku 4.5 $0.00003 $0.00095

Measured 2d ago against content hash 14793a284f30, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

add-processor 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 2d 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.

plugins/sylius-stack/skills/add-processor/SKILL.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add a Custom Processor — Sylius Stack

Ask the user if not provided:

  • The resource (ModelName) and the target operation (Create, Update, Delete, BulkDelete, …).
  • The processor class name. Default: {Operation}{ModelName}Processor (e.g. CreateCustomerProcessor).
  • Whether the processor should decorate the default (keep persist/remove behavior) or fully replace it. Default: decorate for Create/Update (keeps PersistProcessor), decorate for Delete/BulkDelete (keeps RemoveProcessor), full replace for DDD resources not backed by Doctrine.

If the user only needs to disable persistence (e.g. a preview operation), do not create a processor — suggest write: false on the operation instead:

new Update(shortName: 'update_preview', write: false)

1. Create the processor class

Decorating the default Doctrine processor

src/Processor/{ProcessorName}.php — use this when you want the default persistence to still run, and add side effects on top (email, event, queue…):

<?php

declare(strict_types=1);

namespace App\Processor;

use App\Entity\{ModelName};
use Sylius\Resource\Context\Context;
use Sylius\Resource\Doctrine\Common\State\PersistProcessor;
use Sylius\Resource\Metadata\Operation;
use Sylius\Resource\State\ProcessorInterface;
use Webmozart\Assert\Assert;

final class {ProcessorName} implements ProcessorInterface
{
    public function __construct(
        private PersistProcessor $decorated,
        // TODO: inject your side-effect dependencies (Mailer, CommandBus, MessageBus…)
    ) {
    }

    public function process(mixed $data, Operation $operation, Context $context): mixed
    {
        Assert::isInstanceOf($data, {ModelName}::class);

        $this->decorated->process($data, $operation, $context);

        // TODO: add your business logic (send email, dispatch command, publish event…)

        return null;
    }
}

For a Delete / BulkDelete operation, replace PersistProcessor with RemoveProcessor:

Read the full file on GitHub · 139 lines

Changes

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.

  1. 2d ago First seen · 139 lines · 31 tokens per session scan A 14793a284f30

Subscribe to this mod's changes

add-processor is a skill published in the GitHub repository Guiziweb/guiziweb-plugins (4 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 947 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 2026-08-31.

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