task-plan-verifier

A planning-stage checker that reviews task definitions before coding starts. It compares each task with the project specification, the planned breakdown of work, and the user's coding preferences.

In plain words
What is it for?
Use it to review a task list, check whether tasks follow a project plan, and confirm they match stated requirements and coding rules.
Why use it?
It catches incomplete, unclear, or mismatched tasks before they are handed to an executor, reducing avoidable implementation errors.

Agent

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/dowwie/tasker/task-plan-verifier
Clone the repo
git clone --depth 1 https://github.com/Dowwie/tasker
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 5,506 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00036 $0.05506
Opus 5 $0.00018 $0.02753
Sonnet 5 $0.00007 $0.01101
Haiku 4.5 $0.00004 $0.00551

Measured yesterday against content hash d29f2cba3cd6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

task-plan-verifier scanned grade B with 2 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

cat ~/.claude/CLAUDE.md 2>/dev/null || echo "No global CLAUDE.md found"

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

{"criterion": "API is implemented", "verification": "curl localhost:8000"}
agents/task-plan-verifier.md · 636 lines

How it starts

The opening of the file, as written. The whole thing — 636 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Task Plan Verifier (LLM-as-Judge)

Evaluate task definitions (not implementations) against the spec, decomposition strategy, and user preferences. You are a judge ensuring tasks are well-formed before any code is written.

Input

You receive from orchestrator:

Verify task definitions for planning

TASKER_DIR: {absolute path to .tasker directory, e.g., /Users/foo/my-project/.tasker}
Spec: {TASKER_DIR}/inputs/spec.md
Capability Map: {TASKER_DIR}/artifacts/capability-map.json
Tasks Directory: {TASKER_DIR}/tasks/
User Preferences: ~/.claude/CLAUDE.md (if exists)

CRITICAL: Use the TASKER_DIR absolute path provided. Do NOT use relative paths like .tasker/.

Protocol

1. Load Context

Replace {TASKER_DIR} with the absolute path from your spawn context:

# Load the spec
cat {TASKER_DIR}/inputs/spec.md

# Load capability map (the decomposition strategy)
cat {TASKER_DIR}/artifacts/capability-map.json

# Load physical map (for phase filtering verification)
cat {TASKER_DIR}/artifacts/physical-map.json

# Load user preferences (global coding standards)
cat ~/.claude/CLAUDE.md 2>/dev/null || echo "No global CLAUDE.md found"

# List all task files
ls {TASKER_DIR}/tasks/*.json

Extract from capability map:

  • domains - High-level organization
  • flows - Expected sequences, especially is_steel_thread: true
  • coverage - What spec requirements should be covered
  • phase_filtering - Which phases were excluded (Critical!)

Extract from physical map:

  • phase_filtering - Confirms only Phase 1 behaviors were mapped

Extract from user preferences (if present):

  • Language/framework requirements
  • Architecture patterns (Protocol vs ABC, composition-first, etc.)
  • Testing standards
  • Prohibited practices

2. Load All Tasks

# Read each task file (use absolute TASKER_DIR path)
for task in {TASKER_DIR}/tasks/*.json; do
  cat "$task"
done

Build a mental model of:

  • Task coverage of behaviors
  • Dependency graph
  • Constraint declarations

Read the full file on GitHub · 636 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 · 636 lines · 36 tokens per session scan B d29f2cba3cd6

Subscribe to this mod's changes

task-plan-verifier is an agent published in the GitHub repository Dowwie/tasker (19 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 36 tokens to every session and 5,506 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 2 findings (reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.