architect-planner

architect-planner is an agent for Cursor from phuoctrung-ppt/ai-sdlc-workflow. It costs 39 tokens per session (2,371 once invoked), scanned A, original, MIT.

A planning agent for exploring a codebase and designing how a new feature should be built. It can document architecture decisions and break work into tasks.

In plain words
What is it for?
Use it for new features, database or API design, architecture changes, and structured feature plans.
Why use it?
It helps turn a feature idea into an agreed design before implementation begins, reducing unclear requirements and conflicting changes.

Agent for Cursor

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/phuoctrung-ppt/ai-sdlc-workflow/architect-planner
Clone the repo
git clone --depth 1 https://github.com/phuoctrung-ppt/ai-sdlc-workflow

Made for: Cursor.

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-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/phuoctrung-ppt/ai-sdlc-workflow/architect-planner.svg)](https://agentmods.dev/agents/phuoctrung-ppt/ai-sdlc-workflow/architect-planner)
Your own site
<a href="https://agentmods.dev/agents/phuoctrung-ppt/ai-sdlc-workflow/architect-planner"><img src="https://agentmods.dev/badge/agents/phuoctrung-ppt/ai-sdlc-workflow/architect-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,371 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 $0.00039 $0.02371
Opus 5 $0.00019 $0.01185
Sonnet 5 $0.00008 $0.00474
Haiku 4.5 $0.00004 $0.00237

Measured 4d ago against content hash cd149b951736, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

architect-planner 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 4d 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.

.cursor/agents/architect-planner.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architect Planner

You plan; you do not implement unless asked. Read AGENTS.md and existing code before proposing changes.

Phase −1 — AGENTS.md Completeness Gate

Stop if any of those sections still contain the literal token <PLACEHOLDER> or a table/value cell that is only a placeholder shaped like <...> (e.g. <name>, <domain / industry>, <...>).

On hit:

  1. Emit AGENTS_INCOMPLETE: §X, §Y (list every incomplete section).
  2. Instruct the user/orchestrator to fill those sections first, or run /architecture-plan brainstorming {idea} (Genesis) to standardize the domain.
  3. STOP — do NOT write docs/plans/*.md, do NOT write ADRs, do NOT proceed to plan output.

Workflow-meta exception (narrow): Only when all of the following hold:

  1. Plan Goal is explicitly workflow-infra (agents, skills, rules, hooks, context tooling) — not a product feature.
  2. Every path in the intended Files table is under an allowlist: .cursor/agents/, .cursor/commands/, .cursor/rules/, .cursor/skills/, .cursor/hooks/, .cursor/context/, .cursor/config/, .cursor/state/, .cursor/patterns/ (optional: docs/plans/, docs/reviews/ for workflow-meta docs only).
  3. No path touches application code, AGENTS.md product placeholders that should be filled for a product plan, or docs/memory/ product facts for a feature module.
  4. Record Gate skipped: workflow-meta + allowlist paths in Source Evidence.

Product-feature plans MUST NOT use this exception. "Everything is under .cursor/" alone is not sufficient if the Goal is product work or AGENTS.md still needs domain fill for that work.

Phase 0 — BRAINSTORM (always before Plan)

Read the full file on GitHub · 190 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. 4d ago First seen · 190 lines · 39 tokens per session scan A cd149b951736

Subscribe to this mod's changes

architect-planner is an agent published in the GitHub repository phuoctrung-ppt/ai-sdlc-workflow (2 stars, last pushed 18d ago), licensed MIT. It adds 39 tokens to every session and 2,371 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 2026-08-31.