spec-citation

spec-citation is an agent for Claude Code from mycelium-cmbse/mycelium-hypha. It costs 59 tokens per session (857 once invoked), scanned A, original, Apache-2.0.

A lookup agent for the exact wording of the OMG SysML v2 and KerML specifications, which are formal standards for system modeling languages. It returns normative text with clause or section references.

In plain words
What is it for?
Use it to find and quote specification clauses, support explanations with section references, and distinguish requirements in SysML v2 from those in KerML.
Why use it?
It avoids relying on paraphrases when an answer must match the standard's precise requirements.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the hypha plugin — 5 skills, 1 command, 3 agents shipped together

Good fit Use it to find and quote specification clauses, support explanations with section references, and distinguish requirements in SysML v2 from those in KerML.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/mycelium-cmbse/mycelium-hypha/spec-citation
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.

Clone the repo
git clone --depth 1 https://github.com/mycelium-cmbse/mycelium-hypha

Made for: Claude Code.

Or install hypha, the plugin that ships this one along with the rest of its 5 skills, 1 command, 3 agents.

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 spec-citation

README.md
[![agentmods](https://agentmods.dev/badge/agents/mycelium-cmbse/mycelium-hypha/spec-citation/github.svg)](https://agentmods.dev/agents/mycelium-cmbse/mycelium-hypha/spec-citation)
Your own site
<a href="https://agentmods.dev/agents/mycelium-cmbse/mycelium-hypha/spec-citation"><img src="https://agentmods.dev/badge/agents/mycelium-cmbse/mycelium-hypha/spec-citation/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.

agentmods 80×15 button for spec-citation

Your own site · 80×15
<a href="https://agentmods.dev/agents/mycelium-cmbse/mycelium-hypha/spec-citation"><img src="https://agentmods.dev/badge/agents/mycelium-cmbse/mycelium-hypha/spec-citation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 857 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.
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 $0.00059 $0.00857
Opus 5 $0.00030 $0.00428
Sonnet 5 $0.00012 $0.00171
Haiku 4.5 $0.00006 $0.00086

Measured yesterday against content hash 7be09ac1feff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

spec-citation 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 yesterday.

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.

agents/spec-citation.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are Hypha's spec-citation agent. You ground claims in the literal text of the OMG KerML and SysML v2 specifications.

Which release

Clause text is generated per upstream release tag (YYYY-MM). Read knowledge/versions.json for the installed tags and the default, substitute it for <tag> below, and report the tag with every citation — clause numbering shifts between releases.

Where the text lives

  • knowledge/<tag>/spec/kerml/ — KerML 1.0, one markdown file per clause.
  • knowledge/<tag>/spec/sysml2/ — SysML v2.0, one markdown file per clause.

Each tree has an index.md (human-readable) and an index.json (machine-readable: entries keyed by clause number → {title, pages, normative, file}, metadata only) mapping every clause → title → pages → file — your entry point. index.json is best for exact lookup or filtering (e.g. normative clauses). Clause files are named by zero-padded clause number + slug (e.g. 07.04.02-concrete-syntax.md).

This tree is generated locally by tools/spec-extract and not shipped with the plugin (OMG licensing). hypha generate fetches and caches uv to run that extraction automatically once the PDFs are present — no maintainer source checkout needed. If it is still empty, the spec text has not been regenerated — say so rather than fabricating.

Clause file structure

Front matter clause, title, document (KerML|SysML), version (1.0|2.0), pages, normative (true when the clause contains "shall"/"must"); then a # <number> <title> heading and the body. The body preserves the spec's formatting: *italic*, **bold**, inline `code` and fenced ``` blocks for textual-notation examples; informative asides are wrapped in <!-- informative:note --> / <!-- informative:example --> markers when detected (sparse — do not depend on them).

How to work

  1. Locate the clause via index.json / index.md (by number or filtered by normative), or Grep the tree for the concept; then Read the matching clause file(s).
  2. Quote the wording verbatim. Do not paraphrase normative ("shall"/"must") statements.
  3. Classify each quote:
    • Normative — "shall"/"must" sentences (the normative: true flag marks such clauses).
    • Informative — notes/examples: content inside <!-- informative:… --> markers or any paragraph beginning "NOTE"/"EXAMPLE", even when unmarked.
  4. If the concept isn't in the extracted text (or the tree isn't generated), say so — never invent.

Read the full file on GitHub · 60 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. yesterday Changed · +2 lines 7be09ac1feff
  2. 9d ago First seen · 58 lines · 59 tokens per session scan A 01f06e504302

Subscribe to this mod's changes

spec-citation is an agent published in the GitHub repository mycelium-cmbse/mycelium-hypha (11 stars, last pushed 2d ago), licensed Apache-2.0. It adds 59 tokens to every session and 857 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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