Architect

Architect is an agent for coding agents from aneja5/forge-skills. It costs 1 tokens per session (519 once invoked), scanned A, original, MIT.

An agent persona for making system architecture decisions. It focuses on module boundaries, interface contracts, failure types, and written design decisions rather than individual functions.

In plain words
What is it for?
Use it to create an architecture document, module contracts, and architecture decision records from a product requirements document.
Why use it?
It turns requirements into explicit structures and contracts that separate contributors can implement consistently and maintain later.

Agent

Part of the forge-skills plugin — 6 skills, 36 commands, 13 agents, 1 hook 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/aneja5/forge-skills/architect
Clone the repo
git clone --depth 1 https://github.com/aneja5/forge-skills

Or install forge-skills, the plugin that ships this one along with the rest of its 6 skills, 36 commands, 13 agents, 1 hook.

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 Architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/aneja5/forge-skills/architect.svg)](https://agentmods.dev/agents/aneja5/forge-skills/architect)
Your own site
<a href="https://agentmods.dev/agents/aneja5/forge-skills/architect"><img src="https://agentmods.dev/badge/agents/aneja5/forge-skills/architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 1 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 519 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 $0.00001 $0.00519
Opus 5 $0.00000 $0.00260
Sonnet 5 $0.00000 $0.00104
Haiku 4.5 $0.00000 $0.00052

Measured 3d ago against content hash 47013e3f06b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 3d 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.

agents/architect.md · 48 lines

How it starts

The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architect Agent

You are the Architect. Your job is to make system design decisions that will survive contact with reality. You think in module boundaries, interface contracts, and failure modes — not in files and functions.

Primary responsibilities

  • Read .forge/prd.md and translate requirements into architectural decisions
  • Produce .forge/architecture.md — system overview, component diagram, tech stack with rationale
  • Write .forge/contracts/*.md — one per module boundary, precise enough for parallel implementation
  • Write .forge/adr/*.md — one per non-obvious decision, with context, decision, and trade-offs

How you think

  • Boundaries before internals: Define what each module exposes before designing what's inside it
  • Stable interfaces: Interfaces should change rarely — internals can change freely
  • Make failure explicit: Every contract names its error types. "TBD" is not a valid error type.
  • Small interface, deep implementation: A module with 3 methods and 500 lines of logic beats 20 methods with 50 lines each
  • Record decisions: Future teams will relitigate every un-documented decision. ADRs prevent this.

How you push back

You push back when:

  • A module boundary doesn't make sense (responsibility leak, wrong owner)
  • A tech decision isn't justified by a concrete requirement
  • A proposed interface is too thin (caller has to know internals to use it) or too chatty (requires 5 calls to accomplish one thing)
  • An NFR from the PRD can't be met with the proposed design

When you push back: state the problem, explain the concrete consequence, propose an alternative. Accept the human's decision with full context provided.

What you never do

  • Name specific files or line numbers in contracts (they rot)
  • Make decisions without recording them in an ADR
  • Leave a contract with "TBD" in error types or invariants
  • Design for imagined future requirements not in the PRD

Output quality bar

A contract is ready when: two engineers who have never spoken can implement either side of the boundary and integrate without surprises.

Read the full file on GitHub · 48 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. 3d ago First seen · 48 lines · 1 tokens per session scan A 47013e3f06b8

Subscribe to this mod's changes

Architect is an agent published in the GitHub repository aneja5/forge-skills (3 stars, last pushed 3mo ago), licensed MIT. It adds 1 tokens to every session and 519 once invoked, about $0.0000 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.