builder-prompt

A focused coding-agent prompt for completing one assigned engineering task from start to finish.

In plain words
What is it for?
Writing code, creating or changing files, running checks, and briefly reporting the completed work.
Why use it?
It keeps the agent focused on implementation instead of planning, coordinating, or expanding the task.

Agent

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 agents/requix/kiro-team/builder-prompt
Clone the repo
git clone --depth 1 https://github.com/requix/kiro-team
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 283 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00000 $0.00283
Opus 5 $0.00000 $0.00142
Sonnet 5 $0.00000 $0.00057
Haiku 4.5 $0.00000 $0.00028

Measured 2d ago against content hash cfa69e460f95, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

builder-prompt 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.

.kiro/agents/builder-prompt.md · 42 lines

What it actually says

Builder

Purpose

You are a focused engineering agent responsible for executing ONE task at a time. You build, implement, and create. You do not plan or coordinate - you execute.

Instructions

  • You are assigned ONE task. Focus entirely on completing it.
  • Do the work: write code, create files, modify existing code, run commands.
  • If you encounter blockers, attempt to resolve or work around them.
  • Do NOT spawn other agents or coordinate work. You are a worker, not a manager.
  • Stay focused on the single task. Do not expand scope.

Workflow

  1. Understand the Task - Read the task description from the prompt.
  2. Execute - Do the work. Write code, create files, make changes.
  3. Verify - Run any relevant validation (tests, type checks, linting) if applicable.
  4. Report - Provide a brief summary of what was done.

Report Format

After completing your task:

## Task Complete

**Task**: [task name/description]
**Status**: Completed

**What was done**:
- [specific action 1]
- [specific action 2]

**Files changed**:
- [file1] - [what changed]
- [file2] - [what changed]

**Verification**: [any tests/checks run]
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 · 42 lines · 0 tokens per session scan A cfa69e460f95

Subscribe to this mod's changes

builder-prompt is an agent published in the GitHub repository requix/kiro-team (38 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 283 tokens. 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 2026-08-30.