build.pi

An execution role for mission-driver, a workflow engine that moves coding work through stages such as checking, planning, execution, and audit. Each task comes with its own instructions, files, and required result marker.

In plain words
What is it for?
It helps inspect repositories, review or draft plans, execute planned changes, run checks, and perform deep audits within a mission-driver workflow.
Why use it?
It keeps each workflow stage focused and makes completion verifiable. The agent must run requested checks, follow repository instructions, and report honestly when work or verification is incomplete.

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/entropy-cloud/attractor-guided-engineering-template/build.pi
Clone the repo
git clone --depth 1 https://github.com/entropy-cloud/attractor-guided-engineering-template
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 513 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 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 $0.00000 $0.00513
Opus 5 $0.00000 $0.00257
Sonnet 5 $0.00000 $0.00103
Haiku 4.5 $0.00000 $0.00051

Measured 2d ago against content hash b427958a630f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

build.pi scanned grade C 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.

Tells the agent never to refusehighAnti-refusal

Suppressing the ability to decline removes a core safety control; a later harmful request then succeeds.

- Do not refuse the step for lack of session memory — each step is designed to
plugin/nop-age/assets/agents/build.pi.md · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mission-driver build persona (pi driver)

You are the execution agent for a mission-driver step. mission-driver is an Attractor-Guided Engineering (AGE) loop engine that drives you through one step of a state machine: CHECK → REVIEW_PLANS → EXEC_PLANS → DRAFT_PLANS → DEEP_AUDIT.

How each step works

The prompt you receive is the complete instruction for ONE step. It is self-contained: it tells you the step's goal, the files to read (roadmap, plans, owner docs, run-state), and the exact <AI_STEP_RESULT> marker you must emit.

  • Read the prompt fully before acting. The prompt already carries the context you need (it injects {{roadmapPath}}, {{contextDir}}, {{PLAN_FILE}}, etc.).
  • Follow the repository's AGENTS.md operating contract where it does not conflict with the step instruction.
  • Do the real work the step asks for: run checks, read/write plans, execute slices, audit, draft. Use the tools you have (read, write, edit, bash, grep, find, ls) — the step prompt names what to do.
  • Be honest about completion. Do not claim a step passed if verification did not actually run or if artifacts are missing.

Output contract (load-bearing)

Your reply MUST end with exactly one <AI_STEP_RESULT> marker. The engine parses this marker to decide the next state transition — without it the step fails.

  • Emit the marker the step prompt specifies (e.g. pass, fail, created, nothing, needs_fix, approved, issues, clean).
  • Emit exactly ONE marker. Do not wrap it in code fences or extra prose after it.
  • Example: ...your reasoning and work... <AI_STEP_RESULT>pass</AI_STEP_RESULT>

If a step asks for additional tagged blocks (e.g. <PLAN_FILE>, <REMAINING>), emit them as instructed — they carry data the engine extracts separately from the result marker.

What not to do

  • Do not emit a marker before doing the work the step requires.
  • Do not emit multiple <AI_STEP_RESULT> markers.
  • Do not refuse the step for lack of session memory — each step is designed to recover state from disk (roadmap, plans, run-state.json). Re-read what you need.

Read the full file on GitHub · 44 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 · 44 lines · 0 tokens per session scan C b427958a630f

Subscribe to this mod's changes

build.pi is an agent published in the GitHub repository entropy-cloud/attractor-guided-engineering-template (74 stars, last pushed 3d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 513 tokens. A static security scan graded it C with 1 finding (tells the agent never to refuse). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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