corpus-persona-extraction

corpus-persona-extraction is a skill for Claude Code from organvm-iv-taxis/a-i--skills. It costs 101 tokens per session (1,494 once invoked), scanned A, original, Apache-2.0.

A tool for studying session logs or chat transcripts and turning one person's language and writing patterns into a reusable profile. The profile is saved in a YAML file for other tools to use.

In plain words
What is it for?
Use it to analyze vocabulary, distinctive phrases, sentence patterns, metaphors, and changes in a person's communication style across transcripts.
Why use it?
It prevents agents from repeatedly relearning how someone speaks and separates that person's wording from assistant and tool messages.

Skill for Claude Code

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

Part of the example-skills plugin — 47 skills, 2 commands, 1 agent shipped together

Good fit Use it to analyze vocabulary, distinctive phrases, sentence patterns, metaphors, and changes in a person's communication style across transcripts.

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Install with agentmods
npx agentmods add skills/organvm-iv-taxis/a-i--skills/corpus-persona-extraction
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 organvm-iv-taxis/a-i--skills --skill corpus-persona-extraction
Clone the repo
git clone --depth 1 https://github.com/organvm-iv-taxis/a-i--skills

Made for: Claude Code.

Or install example-skills, the plugin that ships this one along with the rest of its 47 skills, 2 commands, 1 agent.

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 corpus-persona-extraction

README.md
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Your own site
<a href="https://agentmods.dev/skills/organvm-iv-taxis/a-i--skills/corpus-persona-extraction"><img src="https://agentmods.dev/badge/skills/organvm-iv-taxis/a-i--skills/corpus-persona-extraction/github.svg" alt="Measured on agentmods" height="20"></a>

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agentmods 80×15 button for corpus-persona-extraction

Your own site · 80×15
<a href="https://agentmods.dev/skills/organvm-iv-taxis/a-i--skills/corpus-persona-extraction"><img src="https://agentmods.dev/badge/skills/organvm-iv-taxis/a-i--skills/corpus-persona-extraction.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,494 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 $0.00101 $0.01494
Opus 5 $0.00051 $0.00747
Sonnet 5 $0.00020 $0.00299
Haiku 4.5 $0.00010 $0.00149

Measured 13d ago against content hash e904ef340d4b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

corpus-persona-extraction 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 13d 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.

distributions/claude/skills/corpus-persona-extraction/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Corpus Persona-Extraction

Distill how a specific voice thinks and speaks from a pile of session logs, and persist it as a machine-usable lexicon that downstream agents can write against.

Why this exists

Agents that work with a long-running human collaborator keep re-learning the same voice from scratch: the coinages, the load-bearing metaphors, the sentence shapes that mean "yes, proceed" versus "you've missed the point." A lexicon file makes that knowledge durable and composable — voice-enforcement gates can score against it, drafting skills can imitate it, and translation layers (persona storefronts) can project from it.

Core doctrine

  • User coinages outrank standard vocabulary. When the corpus shows an idiosyncratic term for a concept ("vacuum", "organ", "cartridge", "liturgy"), the lexicon records the coinage as primary and the standard term as gloss — never the reverse.
  • Append-only. Each extraction run adds a dated block. Prior blocks are evidence of drift, not errors to clean up.
  • Separate speakers ruthlessly. A transcript interleaves human, assistant, and tool text. Only the persona's own turns feed frequency analysis; assistant paraphrase contaminates the signal.

Workflow

1. Assemble and filter the corpus

  • Gather session files; record provenance (paths, date range, message counts) in the extraction header.
  • Parse each format to (speaker, timestamp, text) tuples; keep only speaker == persona_id turns.
  • Strip quoted/pasted material (code blocks, tool output, copied text) — the persona's own prose only.
  • Redact before analysis: run the corpus through secret/PII patterns first; a lexicon must be shareable.

2. Vocabulary frequency

  • Tokenize; compute frequency ranks for unigrams/bigrams/trigrams.
  • Diff against a general-English baseline: the interesting set is terms whose corpus rank vastly exceeds baseline rank (keyness), not raw frequency.
  • Bucket results: domain terms (shared with field), coinages (absent from baseline entirely), and inflections (standard words used in non-standard senses).

Read the full file on GitHub · 107 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. 13d ago First seen · 107 lines · 101 tokens per session scan A e904ef340d4b

Subscribe to this mod's changes

corpus-persona-extraction is a skill published in the GitHub repository organvm-iv-taxis/a-i--skills (17 stars, last pushed 16d ago), licensed Apache-2.0. It adds 101 tokens to every session and 1,494 once invoked, about $0.0005 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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