decompose-claims

decompose-claims is a command for Claude Code from axiomantic/spellbook. It costs 30 tokens per session (909 once invoked), scanned A, original, MIT.

A command that splits dense writing into small, independent claims that can each be checked. A claim is a statement presented as true, and atomic means each resulting statement contains one subject and one fact.

In plain words
What is it for?
Use it to prepare documents, specifications, or other text for evidence checking, especially when paragraphs contain multiple factual statements.
Why use it?
It makes fact-checking clearer when a sentence combines several assertions. Each claim can then be verified without relying on the others.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md).

Good fit Use it to prepare documents, specifications, or other text for evidence checking, especially when paragraphs contain multiple factual statements.

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Install with agentmods
npx agentmods add commands/axiomantic/spellbook/decompose-claims
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/axiomantic/spellbook

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 decompose-claims

README.md
[![agentmods](https://agentmods.dev/badge/commands/axiomantic/spellbook/decompose-claims.svg)](https://agentmods.dev/commands/axiomantic/spellbook/decompose-claims)
Your own site
<a href="https://agentmods.dev/commands/axiomantic/spellbook/decompose-claims"><img src="https://agentmods.dev/badge/commands/axiomantic/spellbook/decompose-claims.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 909 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 $0.00030 $0.00909
Opus 5 $0.00015 $0.00454
Sonnet 5 $0.00006 $0.00182
Haiku 4.5 $0.00003 $0.00091

Measured 8d ago against content hash 989d30223082, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

decompose-claims 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 8d 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.

commands/decompose-claims.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Decompose Claims

Atomic claim decomposition for text and documentation, based on Min et al. (2023) FActScore methodology.

When to Use

  • Fact-checking extraction (Phases 2-3) encounters compound claims
  • Dehallucination review of design documents or specifications
  • Design document review finds dense factual paragraphs
  • Any verification task where claims are entangled

When NOT to Use

  • Code assertions (use inline verification checklists instead)
  • Direct API documentation (already atomic by nature)
  • Single-predicate statements (already atomic)

Invariant Principles

  1. Atomic = one predicate, one subject. "X does Y and Z" is two claims, not one.
  2. Preserve original meaning. Decomposition must not add or subtract meaning.
  3. Independence. Each atomic claim must be verifiable without reference to other claims from the same decomposition.
  4. No interpretation. Decompose what is stated, not what is implied.

Decomposition Protocol

Step 1: Identify Compound Statements

Scan the input text for:

  • Conjunctions joining distinct facts ("X and Y", "X but Y", "X while Y")
  • Relative clauses adding facts ("X, which does Y")
  • Parenthetical additions ("X (using Y)")
  • Lists presented as prose ("supports A, B, and C")
  • Causal chains ("X because Y, leading to Z")

Step 2: Extract Atomic Claims

For each compound statement, produce atomic claims following this pattern:

Compound Atomic Claims
"The cache uses Redis and expires entries after 5 minutes" 1. "The cache uses Redis" 2. "Cache entries expire after 5 minutes"
"Authentication is handled by OAuth2, which requires HTTPS" 1. "Authentication is handled by OAuth2" 2. "OAuth2 requires HTTPS"
"The API supports JSON and XML responses with rate limiting" 1. "The API supports JSON responses" 2. "The API supports XML responses" 3. "The API has rate limiting"

Read the full file on GitHub · 102 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. 8d ago First seen · 102 lines · 30 tokens per session scan A 989d30223082

Subscribe to this mod's changes

decompose-claims is a command published in the GitHub repository axiomantic/spellbook (10 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 909 once invoked, about $0.0002 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.