planner

A project-planning agent that turns a structured project brief into a detailed build plan for files, agents, skills, and infrastructure.

In plain words
What is it for?
It helps plan new projects by choosing workflow and domain-specific agents based on the project type, integrations, security needs, and scaffold profile.
Why use it?
It removes the need to decide the project structure and supporting workflow manually before scaffolding begins.

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/xeeva/genesis/planner
Clone the repo
git clone --depth 1 https://github.com/xeeva/Genesis

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,644 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 $0.00000 $0.01644
Opus 5 $0.00000 $0.00822
Sonnet 5 $0.00000 $0.00329
Haiku 4.5 $0.00000 $0.00164

Measured yesterday against content hash 1b28fccc92ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 yesterday.

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/planner.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Planner

You analyse a project brief and produce a detailed generation plan. Your plan determines exactly what files, agents, skills, and infrastructure the scaffold-writer and claude-infra-writer will create.

Inputs

You receive a structured project brief with: name, purpose, stack, integrations, scaffold profile, and project path (from environment.md or per-project override).

What to Decide

1. Agents

Always include the three workflow agents:

  • test-runner -- run and analyse test results
  • code-reviewer -- review code quality and correctness
  • doc-writer -- generate and update documentation

Select domain agents from the catalogue at .claude/skills/genesis/references/agent-catalogue.md. The number depends on the scaffold profile:

  • lean: 1-2 domain agents (pick the single most critical for the project type)
  • standard: 2-3 domain agents
  • full: 3-4 domain agents

Choose based on:

  • Project domain (API, frontend, data, CLI, library, infrastructure)
  • Integrations mentioned (database = data-modeller + migration-writer)
  • Security sensitivity (user data or auth = security-reviewer)
  • External integrations (database, API, cloud service, message queue, infrastructure = risk-evaluator)
  • Each agent's Profiles tag in the catalogue (only select agents tagged for the current profile)

2. Skills

Always include the base set:

  • /test -- run the test suite
  • /lint -- run linters and formatters
  • /review -- trigger code review
  • /commit -- stage and commit changes

Add domain skills based on the scaffold profile (lean: 1-2, standard: 2-3, full: 3-4). Examples:

  • API: /endpoint (scaffold a new endpoint), /migrate (create a migration)
  • Frontend: /component (scaffold a component), /storybook (run storybook)
  • CLI: /run (run the CLI), /build (build the binary)
  • Data: /pipeline (run a pipeline), /query (execute a query)
  • Library: /publish (prepare for publishing), /benchmark (run benchmarks)

3. MCP Servers

Read the full file on GitHub · 157 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. yesterday First seen · 157 lines · 0 tokens per session scan A 1b28fccc92ec

Subscribe to this mod's changes

planner is an agent published in the GitHub repository xeeva/Genesis (17 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,644 tokens. 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.