causal-method-selector

causal-method-selector is an agent for coding agents from ai-analyst-lab/ai-analyst-plus. It costs 0 tokens per session (1,395 once invoked), scanned A, a copy of causal-method-selector, MIT.

An agent that helps choose a causal inference method, meaning a statistical way to estimate whether one change caused another. It asks questions about the study design and available data, then recommends an approach with reasoning.

In plain words
What is it for?
Use it to decide between an experiment and retrospective causal methods for questions such as whether a product redesign changed conversions.
Why use it?
It reduces the risk of choosing an unsuitable analysis, especially when a randomized experiment may be possible or when the change has already happened.

Agent

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 agents/ai-analyst-lab/ai-analyst-plus/causal-method-selector
Clone the repo
git clone --depth 1 https://github.com/ai-analyst-lab/ai-analyst-plus

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 causal-method-selector

README.md
[![agentmods](https://agentmods.dev/badge/agents/ai-analyst-lab/ai-analyst-plus/causal-method-selector.svg)](https://agentmods.dev/agents/ai-analyst-lab/ai-analyst-plus/causal-method-selector)
Your own site
<a href="https://agentmods.dev/agents/ai-analyst-lab/ai-analyst-plus/causal-method-selector"><img src="https://agentmods.dev/badge/agents/ai-analyst-lab/ai-analyst-plus/causal-method-selector.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,395 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 91% copy Near-identical to another mod 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 $0.00000 $0.01395
Opus 5 $0.00000 $0.00698
Sonnet 5 $0.00000 $0.00279
Haiku 4.5 $0.00000 $0.00139

Measured 4d ago against content hash d132cac636c6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

causal-method-selector 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.

Origin

This is a copy

91% identical to causal-method-selector — 18 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/causal-method-selector.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent: Causal Method Selector

Purpose

Guide the user through a structured decision tree to select the most appropriate causal inference method. Asks diagnostic questions about the data and study design, then recommends a method with confidence level and rationale. Prevents users from choosing the wrong method for their situation.

Inputs

  • {{CAUSAL_QUESTION}}: The causal question the user wants to answer (e.g., "Did the checkout redesign increase conversions?")
  • {{DATA_DESCRIPTION}}: (optional) Description of available data. If not provided, the agent will ask.

Decision Tree

Walk through these questions in order. Stop at the first definitive routing.

Q1: Can You Randomize?

"Is it possible to randomly assign users to treatment and control groups?"

  • YES → Route to /experiment design. This is not a causal inference problem — it's an experiment. Say: "You can run an experiment! Use /experiment design for the best possible causal evidence."
  • NO → Continue to Q2.

Q2: Has the Change Already Happened?

"Has the treatment/change already been implemented?"

  • YES → Continue to Q3 (retrospective analysis).
  • NO, but we can't randomize → This is a prospective observational study. Continue to Q3 to choose the best method given constraints.

Q3: Do You Have a Comparison Group?

"Is there a group of users/units that was NOT affected by the change?"

  • YES, a natural comparison (e.g., different geography, platform, user segment) → Q4.
  • YES, but constructed (e.g., users who chose not to adopt a feature) → Self-selection risk. Route to PSM or Regression Adjustment (Q5).
  • NO comparison group → Route to Pre-Post (weakest method).

Read the full file on GitHub · 143 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 · 143 lines · 0 tokens per session scan A d132cac636c6

Subscribe to this mod's changes

causal-method-selector is an agent published in the GitHub repository ai-analyst-lab/ai-analyst-plus (19 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,395 tokens. A static security scan graded it A with 0 findings. It is 91% identical to causal-method-selector, differing in 18 lines, and is treated as a copy.

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