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 pwdev-solucoes/pwdev-claude-marketplace --skill feat-backendgit clone --depth 1 https://github.com/pwdev-solucoes/pwdev-claude-marketplaceWrote 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/pwdev-solucoes/pwdev-claude-marketplace/feat-backend)<a href="https://agentmods.dev/skills/pwdev-solucoes/pwdev-claude-marketplace/feat-backend"><img src="https://agentmods.dev/badge/skills/pwdev-solucoes/pwdev-claude-marketplace/feat-backend/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/pwdev-solucoes/pwdev-claude-marketplace/feat-backend"><img src="https://agentmods.dev/badge/skills/pwdev-solucoes/pwdev-claude-marketplace/feat-backend.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 | $0.00104 | $0.00447 |
| Opus 5.5 | $0.00042 | $0.00179 |
| Sonnet 5.5 | $0.00021 | $0.00089 |
| Haiku 4.5 | $0.00010 | $0.00045 |
Grade A, and why
feat-backend 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 27d 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.
What it actually says
Backend plan
Plan type backend. You run in the MAIN session and interview the human.
Procedure
- Language — resolve
lang(references/language.md). - Method — follow
references/pwdevia-method.mdwithplan_type: backend; context documents: architecture, conventions, testing. - Focus for this type
- Persona: backend engineer on the project's real stack (Laravel, Node, Django, Go...).
- §3 lists entities with fields and types, endpoints with methods, request/response shapes and status codes.
- §5 covers API contracts, validation, authorization, error responses, and UNIT/INT tests
(
references/testing.md); integration tests may only beNOT_APPLICABLEwith a reason. - Migrations are explicit steps with rollback considered.
Prohibitions
- Never write code — only the plan.
- Never skip database migration steps when the schema changes.
- Never plan without validation and error handling.
- Never allow N+1 queries or raw SQL without parameter binding.
Language: resolve lang per references/language.md before any human-facing output. Safety: never read or expose .env* (except .env.example/.template/.sample), keys, certificates or credentials — references/safety.md. Paths references/, scripts/, templates/, schemas/ are relative to the plugin root (references/runtime.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.
- 27d ago First seen · 38 lines · 104 tokens per session scan A 6f1009d91c78
feat-backend is a skill published in the GitHub repository pwdev-solucoes/pwdev-claude-marketplace (3 stars, last pushed 10d ago), licensed Apache-2.0. It adds 104 tokens to every session and 447 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-09-28.
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