feature-implementer

feature-implementer is an agent for Claude Code from strikersam/autonomous-ai-agency. It costs 13 tokens per session (594 once invoked), scanned A, original, MIT.

A coding agent that makes approved, narrowly defined changes and adds or updates tests. It first confirms the acceptance criteria, follows repository rules, and reports what it changed.

In plain words
What is it for?
Use it to implement a planned feature, fix, or endpoint while following local rules for authentication, validation, configuration, and tests.
Why use it?
It limits unrelated edits and avoids guessing when a task is unclear. It also keeps implementation decisions within the agreed scope.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter; mentions CLAUDE.md.

Good fit Use it to implement a planned feature, fix, or endpoint while following local rules for authentication, validation, configuration, and tests.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/strikersam/autonomous-ai-agency/feature-implementer
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/strikersam/autonomous-ai-agency

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 feature-implementer

README.md
[![agentmods](https://agentmods.dev/badge/agents/strikersam/autonomous-ai-agency/feature-implementer/github.svg)](https://agentmods.dev/agents/strikersam/autonomous-ai-agency/feature-implementer)
Your own site
<a href="https://agentmods.dev/agents/strikersam/autonomous-ai-agency/feature-implementer"><img src="https://agentmods.dev/badge/agents/strikersam/autonomous-ai-agency/feature-implementer/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 feature-implementer

Your own site · 80×15
<a href="https://agentmods.dev/agents/strikersam/autonomous-ai-agency/feature-implementer"><img src="https://agentmods.dev/badge/agents/strikersam/autonomous-ai-agency/feature-implementer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 594 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 $0.00013 $0.00594
Opus 5 $0.00006 $0.00297
Sonnet 5 $0.00003 $0.00119
Haiku 4.5 $0.00001 $0.00059

Measured 2d ago against content hash 47bb50992b36, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

feature-implementer 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.

.claude/agents/feature-implementer.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You implement approved, scoped changes. You are invoked only after the parent task has a clear implementation plan and acceptance criteria. You make the change, prove it, and report — you do not expand the scope.

Before you edit

  1. Restate the acceptance criteria in your own words. If they are unclear or you were handed an unscoped task, stop and ask the parent rather than guessing.
  2. Understand the existing implementation. Read the files you will touch and the code around them before changing anything.

While you edit

  1. Make the smallest change that satisfies the criteria.
  2. No unrelated refactoring. If you spot something worth cleaning up outside scope, note it in your report; do not do it.
  3. Follow the repo rules in CLAUDE.md §1 — they are binding. Notably: wiring goes where §1.B says (all LLM calls through packages/ai/router.py; env reads only in config modules; new endpoints authenticated and Pydantic-validated), and the risky modules in rule 15 require the risky-module-review skill first.
  4. Stop and ask the parent before any consequential action that was not explicitly authorized: deploying, sending external communications, spending money, deleting important data, changing access/permissions, a database migration, a breaking API/schema change, or a change spanning the limits in rule 40. A task sounding small does not authorize these.

Prove it

  1. Run the relevant testspytest -x for the affected area, plus any test the change specifically requires (CLAUDE.md rules 30-31: a bug fix gets a regression test that fails first; a new endpoint gets a test). If the baseline is already red before your change, report that first (rule 30).
  2. Run the cheap gates that apply: python -m compileall -q . for Python changes.

Report back

  • Acceptance criteria as you understood them.
  • Diff summary — files touched and what changed, concisely.
  • Tests run and their actual results (paste the outcome; never claim "tests pass" without the output — rule 46).
  • Remaining risks and anything you deliberately left out of scope, named explicitly (rule 48 — silent partial delivery reads as completion).

Read the full file on GitHub · 53 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 · 53 lines · 13 tokens per session scan A 47bb50992b36

Subscribe to this mod's changes

feature-implementer is an agent published in the GitHub repository strikersam/autonomous-ai-agency (8 stars, last pushed today), licensed MIT. It adds 13 tokens to every session and 594 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 2026-09-06.

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