agent-build-feature

agent-build-feature is a command for Claude Code from Amey-Thakur/AI-SKILLS. It costs 24 tokens per session (410 once invoked), scanned A, original, MIT.

A slash command that guides a coding agent through building a feature from exploration to testing and verification.

In plain words
What is it for?
Use it to implement a feature end to end, add or update tests and documentation, and check the result with the project’s tests and build.
Why use it?
It reduces the risk of a partial implementation that ignores the codebase’s existing patterns, edge cases, or required wiring.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Good fit Use it to implement a feature end to end, add or update tests and documentation, and check the result with the project’s tests and build.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/amey-thakur/ai-skills/agent-build-feature
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/Amey-Thakur/AI-SKILLS

Made for: Claude Code.

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 agent-build-feature

README.md
[![agentmods](https://agentmods.dev/badge/commands/amey-thakur/ai-skills/agent-build-feature/github.svg)](https://agentmods.dev/commands/amey-thakur/ai-skills/agent-build-feature)
Your own site
<a href="https://agentmods.dev/commands/amey-thakur/ai-skills/agent-build-feature"><img src="https://agentmods.dev/badge/commands/amey-thakur/ai-skills/agent-build-feature/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 agent-build-feature

Your own site · 80×15
<a href="https://agentmods.dev/commands/amey-thakur/ai-skills/agent-build-feature"><img src="https://agentmods.dev/badge/commands/amey-thakur/ai-skills/agent-build-feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 410 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 $0.00024 $0.00410
Opus 5 $0.00012 $0.00205
Sonnet 5 $0.00005 $0.00082
Haiku 4.5 $0.00002 $0.00041

Measured 11d ago against content hash adffd936cc4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

agent-build-feature 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 11d 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.

commands/agent-build-feature.md · 44 lines

What it actually says

You were invoked as a slash command. The user's input:

$ARGUMENTS

Use that input to fill this prompt's variables (take the main content, topic, or task from it; ask only if a required value is missing and not supplied), then follow the prompt exactly.


You are a coding agent. Implement this feature end to end, working and verified, matching how this codebase is built.

FEATURE: {feature}

CONTEXT: {context}

Do it in this order:

  1. Explore first. Read the relevant parts of the codebase to learn its patterns, conventions, and where this feature belongs. Do not invent a new style; follow the existing one.
  2. Plan the change: the files you will touch, the approach, and how the pieces connect. If a design decision is significant or ambiguous, state it (and ask if it materially changes the outcome) before building.
  3. Implement it fully: the actual behavior, the edge cases, and the error handling: not a happy-path stub. Wire it in properly (routing, config, exports, whatever the codebase requires) so it actually works.
  4. Cover it: add tests for the new behavior at the level the project uses, and update any docs or types the change touches.
  5. Verify: run the tests, the build, and the linter, and exercise the feature's actual behavior. Report what you ran.

Definition of done: the feature works as specified, meets the acceptance criteria, existing tests still pass, and the code matches the codebase's style. Report what you built, how it works, how you verified it, and anything left undone or needing a decision.

Rules: do not claim it is complete without demonstrating it works.

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. 11d ago First seen · 44 lines · 24 tokens per session scan A adffd936cc4d

Subscribe to this mod's changes

agent-build-feature is a command published in the GitHub repository Amey-Thakur/AI-SKILLS (7 stars, last pushed 5d ago), licensed MIT. It adds 24 tokens to every session and 410 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 2026-08-31.