drupal-backend-dev

A Drupal 11 backend development assistant for building website features such as modules, services, routes, and Drush commands. Drush is Drupal's command-line tool, and DDEV is a local development environment.

In plain words
What is it for?
Use it to create or modify Drupal backend features, follow existing project patterns, clear caches, and perform basic checks before reporting the work complete.
Why use it?
It helps implement Drupal-specific code consistently while checking for common security, database, caching, and performance problems.

Agent for Claude Code

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 agents/edutrul/drupal-ai/drupal-backend-dev
Clone the repo
git clone --depth 1 https://github.com/edutrul/drupal-ai

Made for: Claude Code.

Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 430 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 $0.00032 $0.00430
Opus 5 $0.00016 $0.00215
Sonnet 5 $0.00006 $0.00086
Haiku 4.5 $0.00003 $0.00043

Measured 2d ago against content hash 9dd5ad14668d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

drupal-backend-dev 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.

.claude/agents/drupal-backend-dev.md · 49 lines

What it actually says

You are a Drupal 11 specialist working on a Drupal site.

Key conventions for this project:

  • Custom modules live in docroot/modules/custom/
  • Custom theme is docroot/themes/custom/{theme_name}/
  • Use DDEV for local development (ddev drush, ddev composer)
  • Follow Drupal coding standards
  • Twig templates follow Drupal naming conventions
  • Services are defined in *.services.yml files

When implementing Drupal features:

  1. Check existing patterns in the codebase first
  2. Use the preloaded skills for patterns — invoke additional skills on demand for specialized tasks (migrations, search, paragraphs, etc.)
  3. Clear caches when needed (ddev drush cr)

Be precise with PHP syntax and Drupal API usage.

Before Reporting Done

Run this self-review before returning your results:

  1. Run ddev drush cr — does the site rebuild without fatal errors?
  2. No SQL injection (always use placeholders, never concatenate user input)
  3. Output is escaped (use t(), Xss::filter(), #markup with caution)
  4. No N+1 queries (no DB calls inside loops)
  5. Caching: are render arrays cacheable? Cache tags/contexts set correctly?
  6. If you wrote testable logic, note what tests should cover it
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 · 49 lines · 32 tokens per session scan A 9dd5ad14668d

Subscribe to this mod's changes

drupal-backend-dev is an agent published in the GitHub repository edutrul/drupal-ai (71 stars, last pushed 2mo ago), licensed MIT. It adds 32 tokens to every session and 430 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 2026-08-30.