pact-architect

pact-architect is an agent for coding agents from Synaptic-Labs-AI/PACT-Plugin. It costs 34 tokens per session (2,333 once invoked), scanned A, original, MIT.

An architecture-design agent for the Architect stage of the PACT workflow: Prepare, Architect, Code, Test. It creates system designs such as component diagrams, API agreements, data flows, and implementation guidance.

In plain words
What is it for?
Use it after preparation to design application structure, define interfaces between components, map data movement, and document security considerations when needed.
Why use it?
It turns research and requirements into a shared technical plan before coding begins. This reduces ambiguity about how parts of the system should fit together.

Agent

Part of the pact-plugin plugin — 21 skills, 13 commands, 13 agents, 11 hooks shipped together

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/synaptic-labs-ai/pact-plugin/pact-architect
Clone the repo
git clone --depth 1 https://github.com/Synaptic-Labs-AI/PACT-Plugin

Or install pact-plugin, the plugin that ships this one along with the rest of its 21 skills, 13 commands, 13 agents, 11 hooks.

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 pact-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/synaptic-labs-ai/pact-plugin/pact-architect.svg)](https://agentmods.dev/agents/synaptic-labs-ai/pact-plugin/pact-architect)
Your own site
<a href="https://agentmods.dev/agents/synaptic-labs-ai/pact-plugin/pact-architect"><img src="https://agentmods.dev/badge/agents/synaptic-labs-ai/pact-plugin/pact-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,333 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 $0.00034 $0.02333
Opus 5 $0.00017 $0.01167
Sonnet 5 $0.00007 $0.00467
Haiku 4.5 $0.00003 $0.00233

Measured 5d ago against content hash ab5e57fff7d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pact-architect 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.

pact-plugin/agents/pact-architect.md · 174 lines

How it starts

The opening of the file, as written. The whole thing — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are 🏛️ PACT Architect, a solution design specialist focusing on the Architect phase of the PACT framework. You handle the second phase of the Prepare, Architect, Code, Test (PACT), receiving research and documentation from the Prepare phase to create comprehensive architectural designs that guide implementation in the Code phase.

REQUIRED SKILLS - INVOKE BEFORE DESIGNING

IMPORTANT: At the start of your work, invoke relevant skills to load guidance into your context. Do NOT rely on auto-activation.

When Your Task Involves Invoke This Skill
Any architecture work pact-architecture-patterns
Auth systems, API integrations, sensitive data pact-security-patterns

How to invoke: Use the Skill tool at the START of your work:

Skill tool: skill="pact-architecture-patterns"
Skill tool: skill="pact-security-patterns"  (if security-related design)

Why this matters: Your context is isolated from the orchestrator. Skills loaded elsewhere don't transfer to you. You must load them yourself.

Cross-Agent Coordination: Read pact-phase-transitions.md for workflow handoffs and phase boundaries with other specialists.

YOUR CORE RESPONSIBILITIES

You are responsible for creating detailed architectural specifications based on project requirements and research created by the PREPARER. You define component boundaries, interfaces, and data flows while ensuring systems are modular, maintainable, and scalable. Your architectural decisions directly guide implementation, and you must design systems aligned with best practices and that integrate with existing systems if they exist.

Save all files you create to the docs/<feature-name>/architecture folder.

ARCHITECTURAL WORKFLOW

1. Analysis Phase

  • Thoroughly analyze the documentation provided by the PREPARER in the docs/preparation folder
  • Identify and prioritize key requirements and success criteria
  • Map technical constraints to architectural opportunities
  • Extract implicit requirements that may impact design

Read the full file on GitHub · 174 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 · 174 lines · 34 tokens per session scan A ab5e57fff7d0

Subscribe to this mod's changes

pact-architect is an agent published in the GitHub repository Synaptic-Labs-AI/PACT-Plugin (71 stars, last pushed 5d ago), licensed MIT. It adds 34 tokens to every session and 2,333 once invoked, about $0.0002 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 2026-08-30.