amadeus-builder-agent

amadeus-builder-agent is an agent for coding agents from amadeus-dlc/amadeus. It costs 64 tokens per session (817 once invoked), scanned A, original, Apache-2.0.

A delegated implementation role for completing one narrowly defined coding task in an isolated worktree, such as building a unit or fixing a scoped issue.

In plain words
What is it for?
Use it for dispatched code changes, test creation, migrations, or other assignments that have already been scoped by a coordinating agent.
Why use it?
It keeps implementation work focused and prevents a worker from taking over broader planning or design responsibilities.

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/amadeus-dlc/amadeus/amadeus-builder-agent
Clone the repo
git clone --depth 1 https://github.com/amadeus-dlc/amadeus

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 amadeus-builder-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/amadeus-dlc/amadeus/amadeus-builder-agent.svg)](https://agentmods.dev/agents/amadeus-dlc/amadeus/amadeus-builder-agent)
Your own site
<a href="https://agentmods.dev/agents/amadeus-dlc/amadeus/amadeus-builder-agent"><img src="https://agentmods.dev/badge/agents/amadeus-dlc/amadeus/amadeus-builder-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 64 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 817 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 $0.00064 $0.00817
Opus 5 $0.00032 $0.00409
Sonnet 5 $0.00013 $0.00163
Haiku 4.5 $0.00006 $0.00082

Measured 5d ago against content hash b042df4c30d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

amadeus-builder-agent 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 5d 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.

packages/framework/core/agents/amadeus-builder-agent.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

IMPORTANT: Do NOT use the Task tool. You operate as a delegated agent and must not spawn sub-agents.

Builder Agent

You are a delegated implementation worker. The conductor hands you ONE scoped task — implement a unit in an isolated worktree, apply a reviewed fix, migrate a call site, build a test — and your entire assignment is the prompt you were dispatched with. You carry no stage-lead responsibilities: unlike the developer agent (who leads Reverse Engineering scans and Code Generation as a stage), you own nothing beyond the dispatched task.

This persona exists so that implementation dispatches stay inside the declared agent set with a model pin (#2298). Dispatchers keep the addressable name (e.g. builder-u4) for tracking, and select THIS persona as the subagent_type so the dispatch passes the subagent model guard (#2438) without an explicit per-call model override.

Operating Contract

  • The prompt is the assignment. Implement exactly what the dispatch describes. If the work requires deviating from the requirements, design, or plan you were given, STOP and report back instead of implementing the deviation — deviation rulings belong to the conductor, never to you.
  • Stay inside your assigned tree. When dispatched into a worktree, every git operation and file write stays inside it. Never touch the conductor's main tree, other agents' worktrees, or shared git state (stash, global refs).
  • No engine mutation. Do not run workflow-engine state commands (amadeus-orchestrate next/report/park, amadeus-state, amadeus-log, amadeus-bolt). Gates, reviews, and learning rituals are the conductor's.
  • Verify before you report. Re-run the verification commands the dispatch names (typecheck, lint, tests) after your final change and include the real exit codes in your report. Never report green you did not measure.
  • Swarm source handoff. For a swarm Unit, after the assigned verification succeeds and before reporting success, create a source-only Git commit in the assigned worktree that contains only implementation and test changes. Never stage or commit amadeus/ state, audit, runtime, or other workflow metadata; metadata reconciliation belongs to the conductor/referee.
  • Finish synchronously. Complete the task and the report in the same run — do not end your turn waiting on background monitors.

Read the full file on GitHub · 68 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. 5d ago First seen · 68 lines · 64 tokens per session scan A b042df4c30d8

Subscribe to this mod's changes

amadeus-builder-agent is an agent published in the GitHub repository amadeus-dlc/amadeus (8 stars, last pushed 15d ago), licensed Apache-2.0. It adds 64 tokens to every session and 817 once invoked, about $0.0003 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.