feature-tasker

feature-tasker is an agent for Claude Code from rp1-run/rp1. It costs 20 tokens per session (3,727 once invoked), scanned A, original, Apache-2.0.

A development-planning agent that converts a feature design into an ordered set of implementation tasks. It can also update an existing task plan without discarding completed work.

In plain words
What is it for?
Use it to create or incrementally update task lists for a feature, including task dependencies and documentation impacts.
Why use it?
It turns technical specifications into work that developers can carry out and preserves progress when requirements or designs change.

Agent for Claude Code

Written for Claude Code: arguments in frontmatter. Also seen: model in frontmatter; positional $N argument.

Part of the rp1-dev plugin — 23 skills, 36 agents shipped together

Good fit Use it to create or incrementally update task lists for a feature, including task dependencies and documentation impacts.

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Install with agentmods
npx agentmods add agents/rp1-run/rp1/feature-tasker
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/rp1-run/rp1

Made for: Claude Code.

Or install rp1-dev, the plugin that ships this one along with the rest of its 23 skills, 36 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 feature-tasker

README.md
[![agentmods](https://agentmods.dev/badge/agents/rp1-run/rp1/feature-tasker/github.svg)](https://agentmods.dev/agents/rp1-run/rp1/feature-tasker)
Your own site
<a href="https://agentmods.dev/agents/rp1-run/rp1/feature-tasker"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/feature-tasker/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 feature-tasker

Your own site · 80×15
<a href="https://agentmods.dev/agents/rp1-run/rp1/feature-tasker"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/feature-tasker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,727 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 $0.00020 $0.03727
Opus 5 $0.00010 $0.01863
Sonnet 5 $0.00004 $0.00745
Haiku 4.5 $0.00002 $0.00373

Measured yesterday against content hash e20751763f13, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

feature-tasker 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.

plugins/dev/agents/feature-tasker.md · 441 lines

How it starts

The opening of the file, as written. The whole thing — 441 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Feature Tasker Agent

§ROLE: TaskPlanner - transforms design specs into dev tasks. Invoked by /build workflow.

<feature_id>$1</feature_id> <work_root>{{WORK_ROOT from prompt}}</work_root> <update_mode>$2</update_mode> <update_context>{{UPDATE_CONTEXT from prompt}}</update_context>

§1 Context Loading

Read {WORK_ROOT}/features/{FEATURE_ID}/:

File Req Purpose
design.md Yes Tech specs
requirements.md Yes Business reqs + AC
tasks.md If UPDATE Existing tasks
tasks.json If UPDATE Existing machine task plan
tracker.md / milestone-{N}.md No Legacy read-only context only; never update or emit

Validation:

  • Missing design.md -> exit: "Design document required. Run /build first."
  • Missing requirements.md -> warn, continue

Parse Doc Impact from design.md ## Documentation Impact section -> store as DOC_IMPACTS[] for §3.5.

§1.1 DAG Parsing

Check design.md for ## Implementation DAG section.

If DAG not found: Store DAG_STATE = null (backward compatible: sequential ordering in §3.6).

If DAG found, parse:

  1. Parallel Groups: Extract [T1, T2, ...] patterns from numbered lists

    1. [T1, T2, T3] - comment
    

    Store: PARALLEL_GROUPS[] = [{group: 1, tasks: ["T1","T2","T3"]}, ...]

  2. Dependencies: Extract T{N} -> T{M} and T{N} -> [T{M}, T{O}] patterns

    - T4 -> T1
    - T6 -> [T4, T5]
    

    Store: DEPENDENCIES[] = [{task: "T4", depends_on: ["T1"]}, {task: "T6", depends_on: ["T4","T5"]}, ...]

  3. Build DAG: Create dependency graph from parsed data Store: DAG_STATE = {groups: PARALLEL_GROUPS, deps: DEPENDENCIES}

§2 Scope Analysis

In <thinking>:

2.1 Enumerate

List + number: components, services, endpoints, DB changes, UI elements.

2.2 Classify

This agent only emits tasks.md for feature-sized scope.

Set SCOPE_FIT = "feature" unless the design still clearly describes multiple independently valuable child features or phased rollout slices. When that happens:

Read the full file on GitHub · 441 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 · 441 lines · 20 tokens per session scan A e20751763f13

Subscribe to this mod's changes

feature-tasker is an agent published in the GitHub repository rp1-run/rp1 (38 stars, last pushed 2d ago), licensed Apache-2.0. It adds 20 tokens to every session and 3,727 once invoked, about $0.0001 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 2026-09-07.

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