tutti: Skill for Codex

.codex/skills/tutti-record-agent-session-replay/SKILL.md

tutti-record-agent-session-replay is a skill for Codex from tutti-os/tutti. It costs 127 tokens per session (3,468 once invoked), scanned A, original, Apache-2.0.

A workflow for recording, checking, replaying, and publishing Session Replay test cassettes from scripted browser scenarios against a live provider.

In plain words
What is it for?
Use it to qualify new recordings, diagnose replay failures, and support additional providers in the Tutti checkout.
Why use it?
It helps detect whether a recorded scenario and its replay match the expected transport and application state before calling the cassette reliable.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions AGENTS.md; mentions Codex.

This is tutti-os/tutti's own configuration. It tells Codex how to work on tutti itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything tutti configures →

About the project

Tutti is a real-time collaboration space where people can work alongside multiple AI agents, including by sharing rooms, editing together, and borrowing agents. It is intended for users who want human-agent or multi-agent collaboration across devices, with open-source and VM versions available. The catalogue entries provide skills and instructions for working with Tutti.

tutti-os/tutti · 3,707 stars · on GitHub · tutti.sh

Reuse

Borrowing it

Nothing to install: this file belongs to tutti-os/tutti. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/tutti-os/tutti/main/.codex/skills/tutti-record-agent-session-replay/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/tutti-os/tutti

Made for: 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 tutti-record-agent-session-replay

README.md
[![agentmods](https://agentmods.dev/badge/skills/tutti-os/tutti/tutti-record-agent-session-replay/github.svg)](https://agentmods.dev/skills/tutti-os/tutti/tutti-record-agent-session-replay)
Your own site
<a href="https://agentmods.dev/skills/tutti-os/tutti/tutti-record-agent-session-replay"><img src="https://agentmods.dev/badge/skills/tutti-os/tutti/tutti-record-agent-session-replay/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 tutti-record-agent-session-replay

Your own site · 80×15
<a href="https://agentmods.dev/skills/tutti-os/tutti/tutti-record-agent-session-replay"><img src="https://agentmods.dev/badge/skills/tutti-os/tutti/tutti-record-agent-session-replay.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 127 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,468 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 warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 120
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
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 $0.00127 $0.03468
Opus 5 $0.00063 $0.01734
Sonnet 5 $0.00025 $0.00694
Haiku 4.5 $0.00013 $0.00347

Measured 11d ago against content hash 552876dc374f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

tutti-record-agent-session-replay 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 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/audit-cassette.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.codex/skills/tutti-record-agent-session-replay/SKILL.md · 343 lines

How it starts

The opening of the file, as written. The whole thing — 343 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Qualify Tutti Agent Session Replay Cassettes

Work from the Tutti checkout. Keep product implementation and the generic runner in Tutti; keep Case metadata, scenario scripts, fixtures, qualified Cassettes, and evidence in the external case repository (tutti-os/tutti-replay).

Mental model (script-first, not UI recording):

  1. Humans/agents write a deterministic scenarios/*.mjs (prepare / drive / assert) in the case repository — that script is the recording plan.
  2. Record means: Tutti runner launches Desktop, CDP-executes that script against a live Provider, and captures the Cassette. There is no separate click-to-record UI workflow for Session Replay.
  3. Day-to-day Record/Replay is usually triggered from the case repository QA console; this skill is for Tutti-side CLI qualification, diagnosis, runner or Replay product defects, and new Provider capture support.

Prove qualification in this order:

existing scenario script -> live Record (script + Provider) -> structural audit -> fresh Replay -> optional publication

Never call a Cassette qualified until Record, audit, and a fresh isolated Replay have all passed. If the scenario script itself is missing or wrong, stop and use the case repository write-replay-case skill — do not invent Cases inside Tutti.

Qualification is assertion-specific, not command-specific. A replay passed exit proves transport and semantic playback, but does not prove that every Case action ran during Replay. Build a four-column matrix for each core assertion: Record proof | Cassette proof | Replay proof | Evidence. Stop and repair the scenario when any required Replay cell is empty.

Start the QA console (case repository)

Browsing Cases, Test Plans, and one-click Record/Replay (which run the same scenario scripts) live in the case repository (sibling checkout, commonly ../tutti-replay; GitHub: tutti-os/tutti-replay).

From the case repository root:

pnpm install
pnpm dev

Open only http://127.0.0.1:3333 (never the API port :3334). In the UI, set the Tutti checkout absolute path, create a Test Plan, then Record or Replay. First-time machine setup: that repository's SETUP.md. Authoring or mirroring scenario scripts: .agents/skills/write-replay-case/.

Read the full file on GitHub · 343 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 11d ago First seen · 343 lines · 127 tokens per session scan A 552876dc374f

Subscribe to this mod's changes

tutti-record-agent-session-replay is a skill published in the GitHub repository tutti-os/tutti (3,707 stars, last pushed 6d ago), licensed Apache-2.0. It adds 127 tokens to every session and 3,468 once invoked, about $0.0006 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.