ss-trace-spec

ss-trace-spec is a skill for Claude Code, Codex from lbk-open/super-spec. It costs 54 tokens per session (300 once invoked), scanned A, original, Apache-2.0.

A history tracker for OpenSpec requirements and scenarios. It searches current specifications, archived changes, and Git history to show how documented behavior evolved.

In plain words
What is it for?
Use it to trace a requirement or scenario back through specification files, archived changes, proposals, and relevant Git history.
Why use it?
It helps explain when a behavior changed and whether it was added, modified, removed, or renamed.

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-trace-spec
Any agent
npx skills add lbk-open/super-spec --skill ss-trace-spec
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-trace-spec

README.md
[![agentmods](https://agentmods.dev/badge/skills/lbk-open/super-spec/ss-trace-spec.svg)](https://agentmods.dev/skills/lbk-open/super-spec/ss-trace-spec)
Your own site
<a href="https://agentmods.dev/skills/lbk-open/super-spec/ss-trace-spec"><img src="https://agentmods.dev/badge/skills/lbk-open/super-spec/ss-trace-spec.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 300 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 $0.00054 $0.00300
Opus 5 $0.00027 $0.00150
Sonnet 5 $0.00011 $0.00060
Haiku 4.5 $0.00005 $0.00030

Measured 4d ago against content hash 4c1e2041f0dd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ss-trace-spec 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.

skills/ss-trace-spec/SKILL.md · 38 lines

What it actually says

Trace OpenSpec History

Reconstruct the history of a Requirement or Scenario by searching current specs and archived deltas.

Inputs

Required: the requirement or scenario text (or a close paraphrase) to trace.

Process

  1. Search current specs for the query text, e.g., using your repository search tool over openspec/specs.
  2. Search archived deltas for the same query over openspec/changes/archive.
  3. For each archive hit, read the surrounding context:
    • the archive directory name
    • which delta section it appeared in (ADDED / MODIFIED / REMOVED / RENAMED)
    • the Requirement heading
    • the proposal heading or summary, if present
  4. If the project is under git, also pull the source-of-truth file history, e.g. git log --oneline -- openspec/specs.

Output

Return a chronological summary covering:

  • where the behavior currently lives
  • which archived changes touched it, in order
  • whether each touch added, modified, removed, or renamed it
  • file paths worth reading next

Do not edit any files.

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 · 38 lines · 54 tokens per session scan A 4c1e2041f0dd

Subscribe to this mod's changes

ss-trace-spec is a skill published in the GitHub repository lbk-open/super-spec (1 stars, last pushed 13d ago), licensed Apache-2.0. It adds 54 tokens to every session and 300 once invoked, about $0.0003 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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