What is echo-development?

A development aid for adding live updates to Laravel applications through Laravel Echo. It covers server-side events, channels, permissions, and the client-side setup needed to receive them.

Use it when building features such as live notifications, chat updates, dashboards, or other browser views that need events from Laravel in real time.

It brings the related broadcasting setup into one place, so you do not have to work out how events, channels, authorization, and Echo configuration fit together.

How ownego/token-slayer configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to ownego/token-slayer. 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/ownego/token-slayer/master/.agents/skills/echo-development/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/ownego/token-slayer

Made for: Claude Code, 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ownego/token-slayer/echo-development/github.svg)](https://agentmods.dev/skills/ownego/token-slayer/echo-development)

Your own site

<a href="https://agentmods.dev/skills/ownego/token-slayer/echo-development"><img src="https://agentmods.dev/badge/skills/ownego/token-slayer/echo-development/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/ownego/token-slayer/echo-development"><img src="https://agentmods.dev/badge/skills/ownego/token-slayer/echo-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 94 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,408 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00094	$0.02408
Opus 5.5	$0.00038	$0.00963
Sonnet 5.5	$0.00019	$0.00482
Haiku 4.5	$0.00009	$0.00241

Measured 2mo ago against content hash a5fa69404db2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

echo-development 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 2mo 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.

.agents/skills/echo-development/SKILL.md · 214 lines

The source is not reproduced here

No licence file

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.

2mo ago First seen · 214 lines · 94 tokens per session scan A a5fa69404db2

Subscribe to this mod's changes

echo-development is a skill published in the GitHub repository ownego/token-slayer (4 stars, last pushed 11d ago), with no licence file. It adds 94 tokens to every session and 2,408 once invoked, about $0.0004 per session on Opus 5.5. 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.

Backend and APIs Languages PHP

echo-development next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
echo-developmentownego/token-slayer	Skill	4	11d ago	none	A	94	Claude Code, Codex
laravel-specialistJeffallan/claude-skills	Skill	12k	7d ago	MIT	A	86	Claude Code
create-powergrid-pluginPower-Components/livewire-powergrid	Skill	1.7k	6d ago	MIT	A	31	Claude Code, Codex
owl-admin-devtools-generatorslowlyo/owl-admin	Skill	620	3d ago	MIT	A	82	Claude Code, Codex
php-laravelWrongStack/WrongStack	Skill	404	yesterday	MIT	A	85	Claude Code
update-application-configurationtarlepp/symfony-flex-backend	Skill	288	yesterday	MIT	A	29	Claude Code, Codex
craftcmsmichtio/craftcms-claude-skills	Skill	88	2d ago	MIT	A	70	Claude Code

token-slayer: Skill for Claude Code