jacobian: Skill for Claude Code

.agents/skills/decompose-mathematical-solution-corpora/SKILL.md

decompose-mathematical-solution-corpora is a skill for Claude Code, Codex from morluto/jacobian. It costs 29 tokens per session (1,419 once invoked), scanned A, original, MIT.

A method for studying a defined collection of mathematical proofs, formal code, programs, and certificates to find recurring solution techniques.

In plain words
What is it for?
Use it for repository- or corpus-level audits of what Jacobian can learn from mathematical solutions, while recording the exact source scope and revisions.
Why use it?
It turns a large collection into reusable reasoning patterns instead of summarising every individual file or theorem wrapper.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is morluto/jacobian's own configuration. It tells Claude Code and Codex how to work on jacobian itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything jacobian configures →

Reuse

Borrowing it

Nothing to install: this file belongs to morluto/jacobian. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/morluto/jacobian/main/.agents/skills/decompose-mathematical-solution-corpora/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/morluto/jacobian

Made for: Claude Code, Codex.

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README.md
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Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,419 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 $0.00029 $0.01419
Opus 5 $0.00015 $0.00709
Sonnet 5 $0.00006 $0.00284
Haiku 4.5 $0.00003 $0.00142

Measured 4d ago against content hash c5d86eb78569, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

decompose-mathematical-solution-corpora 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.

.agents/skills/decompose-mathematical-solution-corpora/SKILL.md · 151 lines

How it starts

The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Decompose Mathematical Solution Corpora

Extract reusable mathematical moves from a bounded solution corpus without turning the result into a file-by-file summary or a catalog of theorem wrappers. The unit of analysis is a method family: a recurring local mathematical move, its exact carrier, and the global reasoning that lifts it into a proof.

Use audit-mathematical-vocabulary for one bounded mathematical slice, learn-from-math-agent-trajectories for one completed or paused investigation, and audit-public-operation-contracts when a specific operation needs a deep contract review. This skill owns the repository- or corpus-level decomposition that precedes those focused audits.

Freeze the scope

Record the immutable revision of every source repository and the Jacobian revision and catalog used for comparison. Define the included directories, campaigns, or certificate families and any exclusions. Do not claim corpus closure from a partial clone, truncated artifact, generated summary, or unreadable dependency.

Inventory artifact types before reading deeply: papers and notes, Lean or other formal developments, exact Python or native programs, numerical experiments, solver encodings and proofs, prompts and trajectories, certificate bundles, test fixtures, and replay or publication metadata. Use the inventory to find method families, not to produce a chronological summary of every file.

Group by solution technique

Cluster sources by mathematical move rather than conjecture name or language. Examples include exact finite enumeration, dynamic programming, local-lemma witnesses, linear or semidefinite duality, algebraic elimination, interval enclosure, canonicalization, dependent rounding, coding-theoretic profiles, and finite-state transfer arguments.

Select representative sources from each family. Prefer sources that expose the local move, exact hypotheses, boundary behavior, and an independently replayable fixture. Continue sampling within a family until another representative no longer reveals a new carrier, postcondition, representation regime, or failure mode.

Read the full file on GitHub · 151 lines

Files

What ships with it

1 file 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.

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 Changed · -30 lines · -40 tokens per session c5d86eb78569
  2. 9d ago First seen · 181 lines · 69 tokens per session scan A fd2c6458c49f

Subscribe to this mod's changes

decompose-mathematical-solution-corpora is a skill published in the GitHub repository morluto/jacobian (188 stars, last pushed today), licensed MIT. It adds 29 tokens to every session and 1,419 once invoked, about $0.0001 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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