effort-estimation

effort-estimation is a skill for Claude Code, Codex from paruff/uFawkesAI. It costs 27 tokens per session (513 once invoked), scanned A, original, MIT.

A planning aid that estimates how difficult each task is and how long it may take. It also highlights risky work and tasks that could delay the rest of the project.

In plain words
What is it for?
Estimating task effort, identifying high-risk or long-running tasks, and finding work on the project’s critical path.
Why use it?
It makes capacity planning more realistic and shows where schedules are most likely to slip. It accounts for factors such as unfamiliar technology, integrations, security, and missing tests.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code; installed under .agents/ (shared by several agents); mentions Codex.

Good fit Estimating task effort, identifying high-risk or long-running tasks, and finding work on the project’s critical path.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/paruff/ufawkesai/effort-estimation
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.

Any agent
npx skills add paruff/uFawkesAI --skill effort-estimation
Clone the repo
git clone --depth 1 https://github.com/paruff/uFawkesAI

Made for: Claude Code, Codex.

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 effort-estimation

README.md
[![agentmods](https://agentmods.dev/badge/skills/paruff/ufawkesai/effort-estimation/github.svg)](https://agentmods.dev/skills/paruff/ufawkesai/effort-estimation)
Your own site
<a href="https://agentmods.dev/skills/paruff/ufawkesai/effort-estimation"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/effort-estimation/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 effort-estimation

Your own site · 80×15
<a href="https://agentmods.dev/skills/paruff/ufawkesai/effort-estimation"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/effort-estimation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 513 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 $0.00027 $0.00513
Opus 5 $0.00014 $0.00257
Sonnet 5 $0.00005 $0.00103
Haiku 4.5 $0.00003 $0.00051

Measured 8d ago against content hash 01b26fa565f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

effort-estimation 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 8d 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/skills/plan/effort-estimation/SKILL.md · 80 lines

What it actually says

Skill: Effort Estimation

Load trigger: "load effort-estimation skill" > DORA: Cap 3 (AI-Accessible Internal Data) Token cost: Low

Purpose

Estimate complexity and effort for each task.

Responsibilities

  • Estimate time to complete each task
  • Estimate complexity (simple / moderate / complex)
  • Identify high-risk tasks
  • Identify long-pole tasks on the critical path

Inputs

  • tasks.json

Outputs

  • effort-estimates.json

Estimation Factors

Complexity Levels

Level Description Typical Lines Typical Time
Simple Single file, clear pattern < 100 < 1 hour
Moderate Multiple files, some decisions 100–300 1–3 hours
Complex Multiple systems, architectural decisions 300–400 3–6 hours

Risk Factors

  • New technology or library usage → +1 complexity level
  • Multiple integration points → +1 complexity level
  • Security-sensitive code → flag for review
  • No existing tests in area → flag for test generation
  • External API dependency → flag for mock/stub

Long-Pole Detection

  • Tasks on the critical path are flagged
  • Tasks with most downstream dependencies are flagged
  • Tasks requiring external approval are flagged

Output Format

{
  "task_id": "TASK-001",
  "title": "Task title",
  "complexity": "simple | moderate | complex",
  "estimated_lines": 150,
  "estimated_hours": 2,
  "risk_factors": ["multiple integration points"],
  "is_long_pole": false,
  "is_on_critical_path": true
}

Success Criteria

  • Estimates are consistent and reasonable
  • High-risk tasks identified
  • Long-pole tasks identified
  • No task estimated above 400 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. 8d ago First seen · 80 lines · 27 tokens per session scan A 01b26fa565f9

Subscribe to this mod's changes

effort-estimation is a skill published in the GitHub repository paruff/uFawkesAI (2 stars, last pushed 19d ago), licensed MIT. It adds 27 tokens to every session and 513 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 2026-09-03.

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