forge-planner

forge-planner is an agent for Claude Code from LucasDuys/forge. It costs 32 tokens per session (3,392 once invoked), scanned A, original, MIT.

A planning agent that turns a software specification into an ordered list of implementation tasks. It groups tasks by dependencies, meaning which tasks must come first.

In plain words
What is it for?
It is for creating a dependency-aware implementation plan from numbered requirements, repository information, available capabilities, and project-structure data.
Why use it?
It breaks a large request into smaller pieces with clear completion checks, helping developers avoid speculative work and work in the wrong order.

Agent for Claude Code

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

Part of the forge plugin — 10 skills, 13 commands, 9 agents, 3 hooks shipped together

Good fit It is for creating a dependency-aware implementation plan from numbered requirements, repository information, available capabilities, and project-structure data.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/lucasduys/forge/forge-planner
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/LucasDuys/forge

Made for: Claude Code.

Or install forge, the plugin that ships this one along with the rest of its 10 skills, 13 commands, 9 agents, 3 hooks.

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 forge-planner

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

Your own site · 80×15
<a href="https://agentmods.dev/agents/lucasduys/forge/forge-planner"><img src="https://agentmods.dev/badge/agents/lucasduys/forge/forge-planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
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 3,392 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 $0.00032 $0.03392
Opus 5.5 $0.00013 $0.01357
Sonnet 5.5 $0.00006 $0.00678
Haiku 4.5 $0.00003 $0.00339

Measured 1mo ago against content hash ff2676ba8c3d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

forge-planner 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.

agents/forge-planner.md · 255 lines

How it starts

The opening of the file, as written. The whole thing — 255 lines — stays where its author put it; the contents beside it link to each section on GitHub.

forge-planner Agent

You are the forge-planner agent. Your role is to decompose a single specification into an ordered list of implementation tasks grouped into dependency tiers.

Behavioral Guardrails (Mandatory)

Follow the Karpathy guardrails from skills/karpathy-guardrails/SKILL.md:

  • No gold-plating: Only create tasks that map to R-numbered requirements. No speculative tasks.
  • Focused tasks: One concern per task. Do not bundle unrelated improvements.
  • Clear completion criteria: Each task must have verifiable success criteria derived from acceptance criteria.

Input

You receive:

  1. Spec content: A full spec file with R-numbered requirements and acceptance criteria
  2. Depth: quick, standard, or thorough
  3. Repo config: Which repos are available, their roles (primary/secondary), and execution order
  4. Capabilities: Available MCP servers and skills (optional, informs task design)
  5. Knowledge graph summary (auto-detected by the plan command): If the plan command found graphify-out/graph.json, you receive god nodes, community structure, and cross-module dependencies. Use these to align task boundaries with module boundaries and order by connectivity.
  6. Design system path (auto-detected by the plan command): If DESIGN.md exists, you receive its path. Tag UI tasks with design: DESIGN.md and add a design verification task at the end (depth >= standard).

Output

You produce a frontier file in this exact format:

---
spec: {domain}
total_tasks: {N}
estimated_tokens: {sum of all task estimates}
depth: {quick|standard|thorough}
---

# {Domain} Frontier

## Tier 1 (parallel -- no dependencies)
- [T001] Task name | est: ~Nk tokens | repo: REPO
- [T002] Task name | est: ~Nk tokens | repo: REPO

## Tier 2 (depends on Tier 1)
- [T003] Task name | est: ~Nk tokens | repo: REPO | depends: T001, T002

## Tier 3 (depends on Tier 2)
- [T004] Task name | est: ~Nk tokens | repo: REPO | depends: T003

Read the full file on GitHub · 255 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. 1mo ago First seen · 255 lines · 32 tokens per session scan A ff2676ba8c3d

Subscribe to this mod's changes

forge-planner is an agent published in the GitHub repository LucasDuys/forge (56 stars, last pushed 3mo ago), licensed MIT. It adds 32 tokens to every session and 3,392 once invoked, about $0.0001 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.

Related

Other agents, from other repositories

documentation-manager

Expert documentation specialist. Proactively updates documentation when code changes are made, ensures README accuracy, and maintains comprehensive technical documentation. Be sure to give this subagent information on the files that were changed so it knows where to look to document changes. Always call this agent…

berekvolgyipeter/dotclaude · 61 tokens

validation-gates

Testing and validation specialist. Proactively runs tests, validates code changes, ensures quality gates are met, and iterates on fixes until all tests pass. Call this agent after you implement features and need to validate that they were implemented correctly. Be very specific with the features that were implemented…

berekvolgyipeter/dotclaude · 71 tokens

thermo-nuclear-code-quality-review-subagent

Thermo-nuclear code quality audit (maintainability, structure, 1k-line rule, spaghetti, code-judo). Invoked through the Agent tool after a parent gathers diff and file contents. Loads rubric from the thermo-nuclear-code-quality-review skill in this plugin.

michael-denyer/pstack-claude · 68 tokens

deep-research-patcher

Applies critic findings to a nav-deep-research draft as surgical Edit hunks and records a patch log. Tool-locked so it cannot regenerate the report. Spawned once at step 5 by the nav-deep-research skill.

qf-studio/navigator · 55 tokens

cross-repo-prd-writer

Generates cross-repo PRD documents for missing capabilities based on discovery results.

closedloop-ai/claude-plugins · 24 tokens

verification-subagent

Verifies if a task from the implementation plan has been completed by checking source files.

closedloop-ai/claude-plugins · 21 tokens