lakatos-heuristics

lakatos-heuristics is a skill for Claude Code, Codex from yogsoth-ai/stress-test. It costs 31 tokens per session (580 once invoked), scanned A, original, Apache-2.0.

A method for testing a claim by generating counterexamples, trying to rule them out, and refining the claim when they survive. It treats the claim like a tentative theorem rather than an established fact.

In plain words
What is it for?
Use it to challenge hypotheses, derive contradictions, and incorporate surviving counterexamples into clearer statements.
Why use it?
It makes hidden weaknesses visible and helps produce claims that account for failed examples.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it to challenge hypotheses, derive contradictions, and incorporate surviving counterexamples into clearer statements.

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Install with agentmods
npx agentmods add skills/yogsoth-ai/stress-test/lakatos-heuristics
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 yogsoth-ai/stress-test --skill lakatos-heuristics
Clone the repo
git clone --depth 1 https://github.com/yogsoth-ai/stress-test

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 lakatos-heuristics

README.md
[![agentmods](https://agentmods.dev/badge/skills/yogsoth-ai/stress-test/lakatos-heuristics/github.svg)](https://agentmods.dev/skills/yogsoth-ai/stress-test/lakatos-heuristics)
Your own site
<a href="https://agentmods.dev/skills/yogsoth-ai/stress-test/lakatos-heuristics"><img src="https://agentmods.dev/badge/skills/yogsoth-ai/stress-test/lakatos-heuristics/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 lakatos-heuristics

Your own site · 80×15
<a href="https://agentmods.dev/skills/yogsoth-ai/stress-test/lakatos-heuristics"><img src="https://agentmods.dev/badge/skills/yogsoth-ai/stress-test/lakatos-heuristics.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 580 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 $0.00031 $0.00580
Opus 5 $0.00015 $0.00290
Sonnet 5 $0.00006 $0.00116
Haiku 4.5 $0.00003 $0.00058

Measured 7d ago against content hash f817687a87cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

lakatos-heuristics 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 7d 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.

skills/lakatos-heuristics/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lakatos Heuristics

Tactics

  • counterexample-heuristics
  • contradiction-derivation

Method

  1. Take the claim as a tentative theorem
  2. Generate counterexamples systematically
  3. For each counterexample, attempt monster-barring (exclude as illegitimate)
  4. If monster-barring fails, incorporate as lemma (refine the claim)
  5. Iterate until claim is robust or abandoned

Budget

Size Counterexamples Monster-barring rounds Lemma incorporations
S 5 2 2
M 12 4 4
L 25 8 8

Orchestration

  1. Dispatch counterexample-generation against the claim
  2. For each counterexample, dispatch monster-barring-attempt
  3. If barring fails, dispatch claim-refinement to incorporate lemma
  4. Repeat until saturation or budget exhausted

Subagents

  • counterexample-generation
  • monster-barring-attempt
  • claim-refinement
  • contradiction-detection

Available Tactics

Optional, no fixed order; the final leaf is always a sop.

Tactic When to use
contradiction-derivation Negate a claim, derive logical consequences step by step, detect whether a genuine contradiction or absurdity emerges.
counterexample-heuristics Generate counterexamples (monsters), attempt monster-barring, incorporate surviving counterexamples as lemma refinements (Lakatos method).

Available SOPs

Optional, no fixed order; the final leaf is always a sop.

SOP When to use
claim-refinement Propose a refined claim that survives counterexamples while preserving maximum explanatory power (Lakatos lemma-incorporation).
contradiction-detection Evaluate whether a derivation chain has reached a genuine contradiction, absurdity, or inconclusive state.
counterexample-generation Systematically generate counterexamples (monsters) to a given claim using diverse heuristic strategies.
monster-barring-attempt Attempt to exclude a counterexample as illegitimate by tightening definitions or preconditions (Lakatos monster-barring).

Read the full file on GitHub · 77 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. 7d ago First seen · 77 lines · 31 tokens per session scan A f817687a87cd

Subscribe to this mod's changes

lakatos-heuristics is a skill published in the GitHub repository yogsoth-ai/stress-test (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 31 tokens to every session and 580 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 2026-09-03.

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