holix-sdd-propose

holix-sdd-propose is a skill for Claude Code from javded-itres/Holix. It costs 31 tokens per session (2,539 once invoked), scanned A, original, MIT.

A workflow for proposing non-trivial product, API, data-schema, or feature changes as OpenSpec documents before coding. OpenSpec is a structured format for recording requirements, design decisions, tasks, and project-specific changes.

In plain words
What is it for?
Use it when starting a substantial change, choosing the correct project specification folder, recording the team's understanding, and creating the required planning artifacts.
Why use it?
It helps clarify what is being built and ensures the proposal, design, requirements, and task list are prepared before implementation. It also supports workspaces containing several projects.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions subagents.

Good fit Use it when starting a substantial change, choosing the correct project specification folder, recording the team's understanding, and creating the required planning artifacts.

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Install with agentmods
npx agentmods add skills/javded-itres/holix/holix-sdd-propose
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.

Any agent
npx skills add javded-itres/Holix --skill holix-sdd-propose
Clone the repo
git clone --depth 1 https://github.com/javded-itres/Holix

Made for: Claude Code.

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 holix-sdd-propose

README.md
[![agentmods](https://agentmods.dev/badge/skills/javded-itres/holix/holix-sdd-propose/github.svg)](https://agentmods.dev/skills/javded-itres/holix/holix-sdd-propose)
Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for holix-sdd-propose

Your own site · 80×15
<a href="https://agentmods.dev/skills/javded-itres/holix/holix-sdd-propose"><img src="https://agentmods.dev/badge/skills/javded-itres/holix/holix-sdd-propose.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,539 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00031 $0.02539
Opus 5.5 $0.00012 $0.01016
Sonnet 5.5 $0.00006 $0.00508
Haiku 4.5 $0.00003 $0.00254

Measured 3d ago against content hash 1e995083bdc6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

holix-sdd-propose 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.

core/skills/bundled/holix-sdd-propose/SKILL.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to use

User wants a non-trivial feature, API, schema, or product change. Work starts with a specification, not code.

Language (Studio locale)

Match the user's Studio UI language (ru or en only):

  • Chat (questions, summaries, progress) — that language only
  • All SDD artifacts via sdd_write_artifact (proposal, design, specs, tasks) — that language only
  • sdd_update_understanding summary / questions — that language only
  • Do not mix languages; do not write specs in the other language
  • Structural OpenSpec markers may stay English (## ADDED Requirements, GIVEN/WHEN/THEN), but narrative text, requirement titles, scenarios, and task descriptions must be in the selected locale

If the Studio prompt states locale=ru or locale=en, treat that as authoritative.

Multi-project workspaces

A workspace may contain several projects, each with its own openspec/.

  1. sdd_list_projects — pick the project path (empty string = workspace root)
  2. Pass project=<path> to every subsequent sdd_* tool for that work

Workflow (propose)

  1. sdd_status with project= — if not initialized → sdd_init with the same project=

  2. sdd_list_specs + sdd_read_spec for relevant domains. Also read the code, tests, and docs that change would touch — do not ask the user for facts already in the repo

  3. sdd_list_changes — avoid duplicate open changes

  4. sdd_create_change with slug id and request= (user request text)

  5. Understanding gate (if enabled in user prefs — see create_change response).

    Before any clarifying questions to the user, complete this order:

    1. Existing SDD knowledge
      • sdd_list_specs + sdd_read_spec for relevant domains (openspec/specs/)
      • sdd_list_changes with include_archive=true
      • Read related archived change artifacts under openspec/changes/archive/ (proposal, specs, design, tasks) and any overlapping open changes
    2. Project context / /init if needed
      • Read .holix/HOLIX.md (and project-local notes if any)
      • If missing, empty, or insufficient for this request/domain: run project onboarding equivalent to /init for the project path (scan layout + key files; update HOLIX.md via update_holix_section, or ask the user once to run /init <path> if you cannot write). Do not skip when the codebase is unknown.
    3. Assess understanding
      • Call sdd_update_understanding with honest score (0–100) and summary of what you learned from main specs, archives, and HOLIX — before dumping questions at the user
    4. Only then ask residual clarifying questions in chat
      • After each answer: sdd_update_understanding again with user_answer and updated score / questions
      • If score < threshold → keep clarifying (status clarifying)
      • If score ≥ threshold → status ready: offer proceed or more questions
      • If later answers drop score below threshold → new clarifying cycle
    5. Only after user agrees to proceed: sdd_confirm_understanding
    • Do not fill full proposal/specs/tasks until confirmed (or gate disabled/skipped)
    • Do not open with a long questionnaire before steps 1–3
  6. Fill artifacts via sdd_write_artifact only (not write_file / inventing paths):

    • proposal → openspec/changes/<id>/proposal.md
    • design → openspec/changes/<id>/design.md
    • tasks → openspec/changes/<id>/tasks.md
    • specs → openspec/changes/<id>/specs/<domain>/spec.md (pass domain= or omit)
    • There is no openspec/changes/<id>/specs.md — do not read_file that path
    • Prefer sdd_status(change_id=…) → artifact_paths before reading anything
    • proposal content — Why / What / Impact
    • specs content — delta with ## ADDED|MODIFIED|REMOVED Requirements and GIVEN/WHEN/THEN. Write each domain with sdd_write_artifact as soon as that domain is drafted. Do not plan every spec file before writing the first one
    • design content — approach + task→assignee table
    • tasks content — checklist with assignees and done_when (see below)
    • No behavior change (refactor, docs, rename): sdd_create_change(..., skip_specs=true) or sdd_write_artifact(..., skip_specs=true). Do not invent requirements. Apply and archive do not demand a delta then

Read the full file on GitHub · 188 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 Changed · +3 lines 1e995083bdc6
  2. 1mo ago First seen · 185 lines · 31 tokens per session scan A 3d78b8e81331

Subscribe to this mod's changes

holix-sdd-propose is a skill published in the GitHub repository javded-itres/Holix (19 stars, last pushed 3d ago), licensed MIT. It adds 31 tokens to every session and 2,539 once invoked, about $0.0001 per session on Opus 5.5. 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.