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.
npx skills add magnus919/hermes-profiles --skill sdd-authoringgit clone --depth 1 https://github.com/magnus919/hermes-profilesWrote 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.
[](https://agentmods.dev/skills/magnus919/hermes-profiles/sdd-authoring)<a href="https://agentmods.dev/skills/magnus919/hermes-profiles/sdd-authoring"><img src="https://agentmods.dev/badge/skills/magnus919/hermes-profiles/sdd-authoring/github.svg" alt="Measured on agentmods" height="20"></a>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.
<a href="https://agentmods.dev/skills/magnus919/hermes-profiles/sdd-authoring"><img src="https://agentmods.dev/badge/skills/magnus919/hermes-profiles/sdd-authoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00063 | $0.01235 |
| Opus 5 | $0.00032 | $0.00617 |
| Sonnet 5 | $0.00013 | $0.00247 |
| Haiku 4.5 | $0.00006 | $0.00123 |
Grade A, and why
sdd-authoring 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SDD Specification Authoring
Writing formal, machine-readable specifications that drive AI-assisted implementation. This skill owns the Specify phase of the SDD pipeline and its output is the prerequisite for all downstream SDD work.
SDD Pipeline Position
INCEPTION → [SPECIFY] → PLAN → TASKS → IMPLEMENT → VERIFY
↑
You are here
The specification is the single source of truth. Every downstream artifact — task plan, architecture, implementation, tests — derives from and traces back to this document. Ambiguity in the spec propagates as defects in every subsequent phase.
Artifact-Pyramid Output: SPEC.md
The specification documents produced by this skill follow the artifact-pyramid structure:
| Layer | Content | File |
|---|---|---|
| L1 | Executive Summary — one-paragraph scope statement, key stakeholders, overall success criteria | 00-index.md (entry point) |
| L2 | Per-dimension specification — user stories, Gherkin scenarios, edge cases, NFRs, out-of-scope, data contracts | Individual *.spec.md files |
| L3 | Detailed per-story dossiers — full acceptance criteria, interface definitions, data schemas, examples | dossiers/ directory |
| SOURCES | Navigation index linking each L2 dimension to its L3 sources | Footer of each file |
Loading Guidance
| Reference | When to load | File |
|---|---|---|
| Spec Quality Gates | Before delivering any SPEC.md — validates completeness against 7 quality dimensions | references/spec-quality-gates.md |
| Gherkin Patterns | Writing executable scenarios — Given/When/Then structure for specific patterns | references/gherkin-patterns.md |
| Acceptance Criteria Design | Crafting ACs that pass the "no-surprises" test — edge case enumeration, boundary conditions | references/acceptance-criteria-design.md |
| Template | When to use | File |
|---|---|---|
| SPEC.md | Producing a specification document from scratch | templates/SPEC.md |
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 12d ago First seen · 95 lines · 63 tokens per session scan A db113deddf03
sdd-authoring is a skill published in the GitHub repository magnus919/hermes-profiles (171 stars, last pushed 2mo ago), licensed MIT. It adds 63 tokens to every session and 1,235 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 2026-08-30.
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