cold-start

cold-start is a skill for Codex from mrvladd-d/memobank. It costs 25 tokens per session (5,266 once invoked), scanned A, original, MIT.

A project setup guide that creates shared notes and task folders for a repository, then chooses a workflow for a new or existing codebase.

In plain words
What is it for?
Use it to start a project from requirements or prepare an existing repository for review and implementation.
Why use it?
It gives the coding agent a consistent starting point instead of making you decide which setup steps and workflow to use.

Skill for Codex

Written for Codex: runs codex exec. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions subagents.

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/mrvladd-d/memobank/cold-start
Any agent
npx skills add mrvladd-d/memobank --skill cold-start
Clone the repo
git clone --depth 1 https://github.com/mrvladd-d/memobank

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 cold-start

README.md
[![agentmods](https://agentmods.dev/badge/skills/mrvladd-d/memobank/cold-start.svg)](https://agentmods.dev/skills/mrvladd-d/memobank/cold-start)
Your own site
<a href="https://agentmods.dev/skills/mrvladd-d/memobank/cold-start"><img src="https://agentmods.dev/badge/skills/mrvladd-d/memobank/cold-start.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,266 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 $0.00025 $0.05266
Opus 5 $0.00013 $0.02633
Sonnet 5 $0.00005 $0.01053
Haiku 4.5 $0.00003 $0.00527

Measured 6d ago against content hash f5bed775ee9b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

cold-start 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 6d 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/cold-start/SKILL.md · 420 lines

How it starts

The opening of the file, as written. The whole thing — 420 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cold Start: Memory Bank + Agents bootstrap (greenfield & brownfield)

Summary

Note: cold-start is the package skill for all-in-one bootstrap. Do not confuse it with the generated project command /cold-start: that command is a lightweight router used after skeleton creation inside a target repo. For modular usage, prefer individual skills: mb-init (skeleton), mb-analysis (optional idea discovery), mb-from-prd (greenfield), mb-map-codebase (brownfield), mb-review (review), mb-execute (implementation), mb-verify (UAT), mb-red-verify (semantic adversarial verification).

  • What it does: creates the Memory Bank skeleton, writes agent entry points, and routes the repo into the right workflow.
  • Use it when: you want one entry point for either a new project with a PRD or an existing codebase that needs mapping first.
  • Input: repository root plus either prd.md / requirements text or an existing codebase.
  • Output: .memory-bank/, .tasks/, .protocols/, agent entry files, and the next step for greenfield or brownfield work.

Supported scenarios:

  • Idea-only: repo has a raw idea, but no stable PRD yet; optionally route through /analysis, /brainstorm, and /brief.
  • Clear concept: repo has enough direction for a product brief; normally run /brief, then /constitution only if project principles are not already ratified|partial, before /write-prd.
  • Greenfield: repo has prd.md or requirements text, but no code yet.
  • Brownfield: repo already contains code and needs as-is documentation before change planning.

Non-negotiable principles

1) Orchestrator vs workers

  • You (main agent) are the orchestrator. You plan and coordinate.
  • Workers (subagents) do the heavy lifting (scanning many files, producing long reports).
  • Max depth = 2: orchestrator → subagent. No sub-sub-agents.

2) .tasks/ is runtime memory (НЕ Memory Bank)

  • Every agent process gets a unique task folder: .tasks/TASK-XXX/.
  • Subagents write detailed outputs there, and return only short summaries to the orchestrator.

Read the full file on GitHub · 420 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. 6d ago First seen · 420 lines · 25 tokens per session scan A f5bed775ee9b

Subscribe to this mod's changes

cold-start is a skill published in the GitHub repository mrvladd-d/memobank (55 stars, last pushed 3mo ago), licensed MIT. It adds 25 tokens to every session and 5,266 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 2026-08-30.

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