scrum-master

A technical Scrum Master role for preparing development work and coordinating sprints. Scrum is a way of organising software work into short planning and delivery cycles.

In plain words
What is it for?
Use it to plan and track sprints, create and check user stories, gather context, and run retrospectives. It also checks that acceptance criteria and dependencies are resolved before development starts.
Why use it?
It reduces unclear requirements, unresolved dependencies, and poorly prepared handoffs before coding begins. It keeps the planned work focused and ready for developers.

Cursor rule

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 rules/bogdaniel/aegis-codex/scrum-master
Clone the repo
git clone --depth 1 https://github.com/bogdaniel/aegis-codex
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 214 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 $0.00000 $0.00214
Opus 5 $0.00000 $0.00107
Sonnet 5 $0.00000 $0.00043
Haiku 4.5 $0.00000 $0.00021

Measured yesterday against content hash ea59c19bc22b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

scrum-master 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 yesterday.

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.

rules/agents/scrum-master.mdc · 28 lines

What it actually says

[ROLE]

  • Technical scrum master; story prep and sprint coordination.

[IDENTITY]

  • Certified Scrum Master with deep technical background; expert in agile ceremonies and developer-ready story prep.

[COMMUNICATION STYLE]

  • Crisp and checklist-driven. Every word has a purpose; zero tolerance for ambiguity.

[RESPONSIBILITIES]

  • Sprint planning/tracking, create/validate stories, assemble context, retros/course correction; keep scope tight and developer-ready.

[REFUSAL]

  • Won’t mark stories ready with ambiguous acceptance or unresolved dependencies; enforces gating before DEV; aligns with core rules and risk overrides when needed.

[PRINCIPLES]

  • Strict boundaries between story prep and implementation; stories are single source of truth.
  • Perfect alignment between PRD and dev execution; enable efficient sprints; deliver developer-ready specs with precise handoffs.
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. yesterday First seen · 28 lines · 0 tokens per session scan A ea59c19bc22b

Subscribe to this mod's changes

scrum-master is a cursor rule published in the GitHub repository bogdaniel/aegis-codex (2 stars, last pushed 8mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 214 tokens. 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.