forja-dev

forja-dev is an agent for Claude Code from davepoon/buildwithclaude. It costs 47 tokens per session (366 once invoked), scanned A, original, MIT.

A software developer and architect agent for planning, building, testing, and documenting applications. It follows a team process with separate planning and quality-check roles.

In plain words
What is it for?
Use it for implementation, architecture choices, refactoring, infrastructure, continuous integration and delivery, and technical documentation. It also covers writing tests and checking the finished work.
Why use it?
It gives coding work a repeatable structure, including design decisions, tests, security checks, and a handoff for review.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the agent-triforce plugin — 6 skills, 3 agents shipped together

Good fit Use it for implementation, architecture choices, refactoring, infrastructure, continuous integration and delivery, and technical documentation. It also covers writing tests and checking the finished work.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/davepoon/buildwithclaude/forja-dev
About the project

davepoon/buildwithclaude is a discovery hub and plugin marketplace for Claude Code extensions, including agents, commands, hooks, skills, plugins, MCP servers, and marketplace collections. Developers use it to browse, search, and find installation instructions for tools that extend Claude-related workflows. Catalogue entries include agents, plugins, commands, and skills from this collection.

davepoon/buildwithclaude · 3,677 stars · on GitHub · buildwithclaude.com

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.

Clone the repo
git clone --depth 1 https://github.com/davepoon/buildwithclaude

Made for: Claude Code.

Or install agent-triforce, the plugin that ships this one along with the rest of its 6 skills, 3 agents.

Wrote 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.

agentmods badge for forja-dev

README.md
[![agentmods](https://agentmods.dev/badge/agents/davepoon/buildwithclaude/forja-dev/github.svg)](https://agentmods.dev/agents/davepoon/buildwithclaude/forja-dev)
Your own site
<a href="https://agentmods.dev/agents/davepoon/buildwithclaude/forja-dev"><img src="https://agentmods.dev/badge/agents/davepoon/buildwithclaude/forja-dev/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.

agentmods 80×15 button for forja-dev

Your own site · 80×15
<a href="https://agentmods.dev/agents/davepoon/buildwithclaude/forja-dev"><img src="https://agentmods.dev/badge/agents/davepoon/buildwithclaude/forja-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 366 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00047 $0.00366
Opus 5.5 $0.00019 $0.00146
Sonnet 5.5 $0.00009 $0.00073
Haiku 4.5 $0.00005 $0.00037

Measured 1mo ago against content hash 382298424651, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

forja-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 1mo 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/agent-triforce/agents/forja-dev.md · 36 lines

What it actually says

You are Forja, an elite Full-Stack Developer and Software Architect. You are part of a 3-agent team:

  • Prometeo (PM): defines WHAT and WHY
  • You (Dev): decide HOW and build it
  • Centinela (QA): verifies quality, security, compliance

When invoked:

  1. Read the feature spec or task description thoroughly
  2. Design the architecture (create ADR for significant decisions)
  3. Define interfaces and contracts first
  4. Implement code with tests following project conventions
  5. Run implementation and pre-delivery checklists
  6. Prepare structured handoff to QA agent

Process:

  • Architecture Decision Records go in docs/adr/ADR-{NNN}-{title}.md
  • Source code in src/, tests in tests/
  • Type hints everywhere, docstrings on public functions
  • No hardcoded secrets, URLs, or config values
  • No commented-out code or TODO without issue reference
  • Scan for and remove dead code after implementation
  • Follow the SIGN IN / TIME OUT / TIME OUT / SIGN OUT pause point methodology (two TIME OUTs: implementation correctness + delivery cleanliness)

Provide:

  • Working implementation with all acceptance criteria met
  • Unit and integration tests for critical paths
  • Architecture Decision Records for significant design choices
  • Updated documentation (README, API docs)
  • Structured handoff notes for QA: files changed, how to test, security concerns, known limitations
  • CHANGELOG.md and TECH_DEBT.md updates
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. 1mo ago First seen · 36 lines · 47 tokens per session scan A 382298424651

Subscribe to this mod's changes

forja-dev is an agent published in the GitHub repository davepoon/buildwithclaude (3,677 stars, last pushed today), licensed MIT. It adds 47 tokens to every session and 366 once invoked, about $0.0002 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 2026-08-30.

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