effort

An issue-size estimator that rates how much work a code change is likely to require as small, medium, or large. It considers the issue and the relevant source, interface, and test files.

In plain words
What is it for?
Use it to estimate bug fixes and feature work, with reasoning based on the affected code and tests.
Why use it?
It turns a loosely described problem into a consistent estimate before development begins.

Skill for Claude CodeCodexGemini CLI

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/google-gemini/gemini-cli/effort
Any agent
npx skills add google-gemini/gemini-cli --skill effort
Clone the repo
git clone --depth 1 https://github.com/google-gemini/gemini-cli

Made for: Claude Code, Codex, Gemini CLI.

Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 664 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00015 $0.00664
Opus 5 $0.00008 $0.00332
Sonnet 5 $0.00003 $0.00133
Haiku 4.5 $0.00002 $0.00066

Measured 2d ago against content hash e88c3c85cfe7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

effort scanned grade A with 1 finding 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

- Platform-Specific Complexities (PTY/Signals): Any issue involving node-pty, child_process.spawn, pseudo-terminal exhaustion (ENXIO), raw mode terminal desyncs, or POSIX signal forwarding (SIGINT/SIGTERM).
tools/caretaker-agent/cloudrun/triage-worker/.gemini/skills/effort/SKILL.md · 35 lines

How it starts

The opening of the file, as written. The whole thing — 35 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Effort Estimator Instructions

Analyze the issue content (title, body) AND the code exploration output (the discovered source files, coupled UI components, and test files) to estimate the effort required to implement a fix.

JSON Output Format:

{
  "effort_estimate": "SMALL" | "MEDIUM" | "LARGE",
  "effort_reasoning": "Detailed explanation of why this estimate was chosen."
}

Effort Levels:

SMALL (1 day or less):

  • Trivial Logic & Config: Schema updates (Zod), feature flag toggles, adding missing fields to package.json or settings.json.
  • UI/Aesthetic Adjustments: Fixing minor layout bugs in Ink components (e.g., adding flexShrink, correcting padding in a single Box), text color changes.
  • Documentation & Strings: Typos, log message updates, CLI argument descriptions.
  • Localized Bug Fixes: Single-file logic errors, straightforward promise rejections (e.g., wrapping a known failure in a try/catch), simple regex or string parsing fixes.
  • Unhandled Errors with Obvious Fixes: Issues with provided stack traces or obvious offending lines where the root cause and fix are clear. MEDIUM (2-3 days):
  • React/Ink State Management: Complex component lifecycle issues (memory leaks in the UI), terminal redraw flickering, or state synchronization between the CLI's internal input buffer and the interactive React components.
  • Asynchronous Flow & Integration: Resolving complex Promise chains, ERR_STREAM_PREMATURE_CLOSE, debugging IDE companion extensions (VS Code, Android Studio) or resolving hanging HTTP requests/IPC between the CLI and external plugins, timeouts in non-interactive/ACP modes.
  • Tooling & Output Parsers: Modifying how tools parse streaming stdout/stderr buffers, adding new built-in tools that don't require native bindings.
  • Cross-Component & Cross-Package Refactors: Any fix or change that spans across packages/cli and packages/core (such as unifying event handlers, hooks, or UI state across package boundaries). LARGE (3+ days):
  • Platform-Specific Complexities (PTY/Signals): Any issue involving node-pty, child_process.spawn, pseudo-terminal exhaustion (ENXIO), raw mode terminal desyncs, or POSIX signal forwarding (SIGINT/SIGTERM).
  • Core Architecture & Protocols: Refactoring the Scheduler, Agent-to-Agent (A2A) protocol implementation, low-level MCP (Model Context Protocol) transport mechanisms.
  • CI/CD Infrastructure Overhauls: Major redesign of release pipelines or runner execution environments with a large blast radius across production builds.
  • Performance & Memory: Diagnosing massive disk/memory leaks, severe boot time regressions, high-throughput streaming optimizations (e.g., voice streaming pipelines).

Read the full file on GitHub · 35 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. 2d ago First seen · 35 lines · 15 tokens per session scan A e88c3c85cfe7

Subscribe to this mod's changes

effort is a skill published in the GitHub repository google-gemini/gemini-cli (106,761 stars, last pushed today), licensed Apache-2.0. It adds 15 tokens to every session and 664 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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