What is creating-replay-vision-scanners?

A guide for creating and sizing Replay Vision scanners, which inspect recorded user sessions for patterns or scores. It covers different scanner purposes, the sessions they select, and expected usage.

Choosing a scanner type, defining which recordings it examines, estimating how many observations it will use, and checking quota before creation.

It helps prevent a scanner from selecting too many sessions and exceeding an organisation’s monthly quota.

creating-replay-vision-scanners — Skill for Claude Code by PostHog

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 PostHog/ai-plugin --skill creating-replay-vision-scanners

Clone the repo

git clone --depth 1 https://github.com/PostHog/ai-plugin

Made for: Claude Code.

Or install posthog, the plugin that ships this one along with the rest of its 164 skills, 3 commands, 1 agent, 2 hooks, 1 MCP server.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/posthog/ai-plugin/creating-replay-vision-scanners/github.svg)](https://agentmods.dev/skills/posthog/ai-plugin/creating-replay-vision-scanners)

Your own site

<a href="https://agentmods.dev/skills/posthog/ai-plugin/creating-replay-vision-scanners"><img src="https://agentmods.dev/badge/skills/posthog/ai-plugin/creating-replay-vision-scanners/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/posthog/ai-plugin/creating-replay-vision-scanners"><img src="https://agentmods.dev/badge/skills/posthog/ai-plugin/creating-replay-vision-scanners.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 211 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,821 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00211	$0.02821
Opus 5	$0.00105	$0.01411
Sonnet 5	$0.00042	$0.00564
Haiku 4.5	$0.00021	$0.00282

Measured 4d ago against content hash 84cb4cc5a1eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

creating-replay-vision-scanners 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.

skills/creating-replay-vision-scanners/SKILL.md · 181 lines

The source is not reproduced here

No licence file

Read it on GitHub

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.

4d ago Changed · +55 lines · +52 tokens per session 84cb4cc5a1eb
10d ago First seen · 126 lines · 159 tokens per session scan A 71ec22d3305e

Subscribe to this mod's changes

creating-replay-vision-scanners is a skill published in the GitHub repository PostHog/ai-plugin (80 stars, last pushed yesterday), with no licence file. It adds 211 tokens to every session and 2,821 once invoked, about $0.0011 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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creating-replay-vision-scanners