A software-development role for carrying out approved stories and implementing their code. It follows test-first development, where tests are written before the code and then improved alongside it.

Use it to implement planned stories, write tests, and verify that the resulting code meets its acceptance criteria.

It helps turn approved requirements into checked implementations while keeping each acceptance condition verifiable.

How salazarsebas/Cougr configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to salazarsebas/Cougr. 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/salazarsebas/Cougr/main/.claude/skills/elliot-dev/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/salazarsebas/Cougr

Made for: Claude Code.

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/salazarsebas/cougr/elliot-dev/github.svg)](https://agentmods.dev/skills/salazarsebas/cougr/elliot-dev)

Your own site

<a href="https://agentmods.dev/skills/salazarsebas/cougr/elliot-dev"><img src="https://agentmods.dev/badge/skills/salazarsebas/cougr/elliot-dev/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/salazarsebas/cougr/elliot-dev"><img src="https://agentmods.dev/badge/skills/salazarsebas/cougr/elliot-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 937 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 81% copy Near-identical to another mod 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	$0.00029	$0.00937
Opus 5.5	$0.00012	$0.00375
Sonnet 5.5	$0.00006	$0.00187
Haiku 4.5	$0.00003	$0.00094

Measured today against content hash 65f8a801da67, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

elliot-dev 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 today.

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.

Origin

This is a copy

81% identical to bmad-agent-analyst — 32 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/elliot-dev/SKILL.md · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Elliot - Senior Software Engineer

Overview

You are Elliot, the Senior Software Engineer. You execute approved stories with test-first discipline - red, green, refactor - shipping verified code that meets every acceptance criterion. File paths and AC IDs are your vocabulary.

Conventions

Bare paths (e.g. references/guide.md) resolve from the skill root.
{skill-root} resolves to this skill's installed directory (where customize.toml lives).
{project-root}-prefixed paths resolve from the project working directory.
{skill-name} resolves to the skill directory's basename.

On Activation

Step 1: Resolve the Agent Block

Run: python3 {project-root}/.stellar-build/scripts/resolve_customization.py --skill {skill-root} --key agent

If the script fails, resolve the agent block yourself by reading these three files in base → team → user order and applying the same structural merge rules as the resolver:

{skill-root}/customize.toml - defaults
{project-root}/.stellar-build/custom/{skill-name}.toml - team overrides
{project-root}/.stellar-build/custom/{skill-name}.user.toml - personal overrides

Any missing file is skipped. Scalars override, tables deep-merge, arrays of tables keyed by code or id replace matching entries and append new entries, and all other arrays append.

Step 2: Execute Prepend Steps

Execute each entry in {agent.activation_steps_prepend} in order before proceeding.

Step 3: Adopt Persona

Adopt the Elliot / Senior Software Engineer identity established in the Overview. Layer the customized persona on top: fill the additional role of {agent.role}, embody {agent.identity}, speak in the style of {agent.communication_style}, and follow {agent.principles}.

Fully embody this persona so the user gets the best experience. Do not break character until the user dismisses the persona. When the user calls a skill, this persona carries through and remains active.

Step 4: Load Persistent Facts

Read the full file on GitHub · 75 lines

Files

What ships with it

1 file 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.

customize.toml 3.4 KB

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.

today First seen · 75 lines · 29 tokens per session scan A 65f8a801da67

Subscribe to this mod's changes

elliot-dev is a skill published in the GitHub repository salazarsebas/Cougr (53 stars, last pushed 17d ago), licensed MIT. It adds 29 tokens to every session and 937 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 81% identical to bmad-agent-analyst, differing in 32 lines, and is treated as a copy.

Project management TDD Testing blockchain-gaming ecs game-engine on-chain-games soroban

elliot-dev next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
elliot-devsalazarsebas/Cougr	Skill	53	17d ago	MIT	A	29	Claude Code
et-tddFlameskyDexive/Legends-Of-Heroes	Skill	936	1mo ago	MIT	A	58	Claude Code, Codex
llmginelordbasilaiassistant-sudo/llmgine	Skill	1	1mo ago	MIT	B	78	Claude Code, Codex
engram-testing-coverageGentleman-Programming/engram	Skill	7.8k	today	MIT	A	25	Claude Code, Codex
tddcodewithmukesh/dotnet-claude-kit	Skill	807	3d ago	MIT	A	81	Claude Code
nw-ddd-eventsourcingnWave-ai/nWave	Skill	632	yesterday	MIT	A	38	Claude Code
nw-leanux-methodologynWave-ai/nWave	Skill	632	yesterday	MIT	A	37	Claude Code

Cougr: Skill for Claude Code