ss-proposal

ss-proposal is a skill for Claude Code, Codex from lbk-open/super-spec. It costs 78 tokens per session (2,845 once invoked), scanned A, original, Apache-2.0.

A technical-design document generator that turns a product requirements document (PRD) or plain requirements into a high-level plan for a code repository.

In plain words
What is it for?
Use it to define the right technical approach for backend, frontend, mobile, or full-stack changes before implementation. It can provide the input for a more detailed execution plan.
Why use it?
It prevents coding from starting before the repository’s architecture, data flow, interfaces, alternatives, risks, and milestones are understood.

Skill for Claude CodeCodex

Part of the super-spec plugin — 20 skills 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 skills/lbk-open/super-spec/ss-proposal
Any agent
npx skills add lbk-open/super-spec --skill ss-proposal
Clone the repo
git clone --depth 1 https://github.com/lbk-open/super-spec

Made for: Claude Code, Codex.

Or install super-spec, the plugin that ships this one along with the rest of its 20 skills.

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 ss-proposal

README.md
[![agentmods](https://agentmods.dev/badge/skills/lbk-open/super-spec/ss-proposal.svg)](https://agentmods.dev/skills/lbk-open/super-spec/ss-proposal)
Your own site
<a href="https://agentmods.dev/skills/lbk-open/super-spec/ss-proposal"><img src="https://agentmods.dev/badge/skills/lbk-open/super-spec/ss-proposal.svg" alt="Measured on agentmods" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,845 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 $0.00078 $0.02845
Opus 5 $0.00039 $0.01422
Sonnet 5 $0.00016 $0.00569
Haiku 4.5 $0.00008 $0.00284

Measured 3d ago against content hash 362ceaef541d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ss-proposal 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.

skills/ss-proposal/SKILL.md · 184 lines

How it starts

The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Write Technical Proposal

Generate a comprehensive technical proposal from a PRD or requirement description, for any repository shape — a backend service, a frontend app (Web, iOS, Android, Flutter), or a full-stack repository.

Scope note: a proposal is a high-level design document. It answers what the change is, why it's the right approach, and what contracts it introduces or touches — architecture, data flow, key interfaces, alternatives and trade-offs, risks and rollback, milestones. It does not contain implementation detail: no file-by-file edit lists, no full method bodies, no step-by-step coding instructions. That level of detail is the ss-plan skill's job, which consumes this proposal as its input.

When not to use:

  • Small bug fixes or config-only changes with no architecture decisions.
  • One-line code changes, typo fixes, or copy fixes.
  • Changes already fully specified in an existing proposal.

Announce at the start: "Using the ss-proposal skill to generate the technical proposal."

Inputs

  • A link to a requirement document that your document-reading tool can fetch, or a plain-text requirement description. If neither is available, ask the user for one.

If the input is a document link, read its content with whatever document-reading tool is available in your environment. Otherwise treat the input as a plain-text requirement description directly.

Hard Gates

Before writing, verify each item. If any fails, stop and explain to the user:

  • The PRD/requirement input is readable (the link is accessible, or the text description is substantive).
  • The input contains concrete functional or page/feature requirements, not just a concept or goal statement.
  • The current repository's code can be inspected to understand its existing architecture (it's compilable/runnable, or otherwise navigable).

If requirements are vague or ambiguous, ask the user for clarification — never assume silently.

Anti-Patterns

The following are proposal failures — never allowed:

Read the full file on GitHub · 184 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 · 184 lines · 78 tokens per session scan A 362ceaef541d

Subscribe to this mod's changes

ss-proposal is a skill published in the GitHub repository lbk-open/super-spec (1 stars, last pushed 12d ago), licensed Apache-2.0. It adds 78 tokens to every session and 2,845 once invoked, about $0.0004 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.

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