estimation-patterns

estimation-patterns is a skill for Claude Code, Codex from wpank/ai. It costs 46 tokens per session (2,479 once invoked), scanned A, original, no licence file.

A collection of methods for estimating the effort and timeline of software tasks by breaking them down and accounting for complexity, uncertainty, and bias.

In plain words
What is it for?
It supports feature estimation, sprint planning, buffer calculation, comparing estimation methods, and presenting delivery timelines to stakeholders.
Why use it?
It helps produce more realistic estimates and explain timelines clearly instead of relying only on guesses.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: model in frontmatter.

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 skills/wpank/ai/estimation-patterns
Any agent
npx skills add wpank/ai --skill estimation-patterns
Clone the repo
git clone --depth 1 https://github.com/wpank/ai

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 estimation-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/wpank/ai/estimation-patterns.svg)](https://agentmods.dev/skills/wpank/ai/estimation-patterns)
Your own site
<a href="https://agentmods.dev/skills/wpank/ai/estimation-patterns"><img src="https://agentmods.dev/badge/skills/wpank/ai/estimation-patterns.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,479 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00046 $0.02479
Opus 5 $0.00023 $0.01239
Sonnet 5 $0.00009 $0.00496
Haiku 4.5 $0.00005 $0.00248

Measured 2d ago against content hash 647aee8ddf21, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

estimation-patterns 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 2d 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.

skills/meta/estimation-patterns/SKILL.md · 232 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 232 lines · 46 tokens per session scan A 647aee8ddf21

Subscribe to this mod's changes

estimation-patterns is a skill published in the GitHub repository wpank/ai (11 stars, last pushed 6mo ago), with no licence file. It adds 46 tokens to every session and 2,479 once invoked, about $0.0002 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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