entropy-sequencer

entropy-sequencer is a skill for Claude Code, Codex from plurigrid/asi. It costs 19 tokens per session (1,062 once invoked), scanned A, original, MIT.

A tool for reordering interaction sequences to reveal useful patterns earlier, using information-gain calculations with DuckDB and Hy.

In plain words
What is it for?
It helps analyze message sequences, calculate surprise or entropy, and arrange interactions for more efficient pattern learning.
Why use it?
It helps analysis focus on the most informative interactions instead of replaying everything in chronological order.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/plurigrid/asi/entropy-sequencer
Any agent
npx skills add plurigrid/asi --skill entropy-sequencer
Clone the repo
git clone --depth 1 https://github.com/plurigrid/asi

Made for: Claude Code, Codex.

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 entropy-sequencer

README.md
[![agentmods](https://agentmods.dev/badge/skills/plurigrid/asi/entropy-sequencer.svg)](https://agentmods.dev/skills/plurigrid/asi/entropy-sequencer)
Your own site
<a href="https://agentmods.dev/skills/plurigrid/asi/entropy-sequencer"><img src="https://agentmods.dev/badge/skills/plurigrid/asi/entropy-sequencer.svg" alt="Measured on agentmods" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,062 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00019 $0.01062
Opus 5 $0.00010 $0.00531
Sonnet 5 $0.00004 $0.00212
Haiku 4.5 $0.00002 $0.00106

Measured 4d ago against content hash a5cc9253519e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

entropy-sequencer 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.

ies/music-topos/.agents/skills/entropy-sequencer/SKILL.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

entropy-sequencer

Layer 5: Interaction Interleaving for Maximum Information Gain

Version: 1.1.0 (music-topos enhanced) Trit: 0 (Ergodic - coordinates information flow) Bundle: core

Overview

Entropy-sequencer arranges interaction sequences to maximize learning efficiency. Instead of chronological replay, it reorders interactions to maximize information gain at each step, enabling 3x faster pattern learning.

Enhanced Integration: DuckDB + Hy

DuckDB SQL Backend

-- Compute entropy for message sequences
WITH message_features AS (
    SELECT 
        message_id,
        LENGTH(content) as msg_length,
        LAG(LENGTH(content)) OVER (ORDER BY timestamp) as prev_length
    FROM messages
    WHERE thread_id = ?
),
entropy_scores AS (
    SELECT
        message_id,
        ABS(msg_length - COALESCE(prev_length, msg_length)) as surprise
    FROM message_features
)
SELECT 
    SUM(LN(surprise + 1)) as total_entropy
FROM entropy_scores;

Hy Implementation

;; From thread_relational_hyjax.hy
(defn entropy-maximized-interleave [messages]
  "Arrange messages to maximize information gain at each step."
  (setv remaining (list messages))
  (setv result [])
  (setv current-entropy 0.0)
  
  (while remaining
    (setv best-idx 0)
    (setv best-gain -1000.0)
    
    (for [i (range (len remaining))]
      (setv candidate (+ result [(get remaining i)]))
      (setv gain (information-gain candidate current-entropy))
      (when (> gain best-gain)
        (setv best-gain gain)
        (setv best-idx i)))
    
    (setv best-msg (.pop remaining best-idx))
    (.append result best-msg)
    (setv current-entropy (compute-message-entropy result)))
  
  {:sequence result
   :final-entropy current-entropy
   :message-count (len result)})

Ruby Integration

# lib/world_broadcast.rb extension
module EntropySequencer
  def self.greedy_max_entropy(interactions, seed: 0x42D)
    remaining = interactions.dup
    sequence = []
    context = []
    
    while remaining.any?
      best_idx = 0
      best_gain = -Float::INFINITY
      
      remaining.each_with_index do |interaction, i|
        gain = conditional_entropy(interaction, context)
        if gain > best_gain
          best_gain = gain
          best_idx = i
        end
      end
      
      best = remaining.delete_at(best_idx)
      sequence << best
      context << best
    end
    
    sequence
  end
  
  def self.conditional_entropy(item, context)
    return 1.0 if context.empty?
    # Entropy = log of variance from context mean
    mean = context.sum.to_f / context.size
    variance = (item - mean).abs
    Math.log(variance + 1)
  end
end

Read the full file on GitHub · 154 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. 4d ago First seen · 154 lines · 19 tokens per session scan A a5cc9253519e

Subscribe to this mod's changes

entropy-sequencer is a skill published in the GitHub repository plurigrid/asi (62 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 1,062 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 2026-09-01.

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