speckit.plan

speckit.plan is a command for Codex from casterkay/ruminer-browser-agent. It costs 14 tokens per session (786 once invoked), scanned A, original, AGPL-3.0.

A command that follows a planning template to create design documents for a software change.

In plain words
What is it for?
Use it to plan a feature, bug fix, or other code change and record the design decisions.
Why use it?
It gives an implementation request a documented structure before coding begins.

Command for Codex

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 commands/casterkay/ruminer-browser-agent/speckit.plan
Clone the repo
git clone --depth 1 https://github.com/casterkay/ruminer-browser-agent

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 speckit.plan

README.md
[![agentmods](https://agentmods.dev/badge/commands/casterkay/ruminer-browser-agent/speckit.plan.svg)](https://agentmods.dev/commands/casterkay/ruminer-browser-agent/speckit.plan)
Your own site
<a href="https://agentmods.dev/commands/casterkay/ruminer-browser-agent/speckit.plan"><img src="https://agentmods.dev/badge/commands/casterkay/ruminer-browser-agent/speckit.plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 786 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00014 $0.00786
Opus 5 $0.00007 $0.00393
Sonnet 5 $0.00003 $0.00157
Haiku 4.5 $0.00001 $0.00079

Measured 4d ago against content hash 5ab7652b1b9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

speckit.plan 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.

.codex/prompts/speckit.plan.md · 91 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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.

  1. 4d ago First seen · 91 lines · 14 tokens per session scan A 5ab7652b1b9a

Subscribe to this mod's changes

speckit.plan is a command published in the GitHub repository casterkay/ruminer-browser-agent (0 stars, last pushed 4mo ago), licensed AGPL-3.0. It adds 14 tokens to every session and 786 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 2026-08-31.