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.
npx agentmods add skills/mjunaidca/mjs-agent-skills/better-auth-setupnpx skills add mjunaidca/mjs-agent-skills --skill better-auth-setupgit clone --depth 1 https://github.com/mjunaidca/mjs-agent-skillsWrote 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.
[](https://agentmods.dev/skills/mjunaidca/mjs-agent-skills/better-auth-setup)<a href="https://agentmods.dev/skills/mjunaidca/mjs-agent-skills/better-auth-setup"><img src="https://agentmods.dev/badge/skills/mjunaidca/mjs-agent-skills/better-auth-setup.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00091 | $0.04380 |
| Opus 5 | $0.00046 | $0.02190 |
| Sonnet 5 | $0.00018 | $0.00876 |
| Haiku 4.5 | $0.00009 | $0.00438 |
Grade A, and why
better-auth-setup scanned grade A with 1 finding 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 2d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -X POST http://localhost:3001/api/admin/clients/register \ The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 2d ago First seen · 582 lines · 91 tokens per session scan A 801c4fe71870
better-auth-setup is a skill published in the GitHub repository mjunaidca/mjs-agent-skills (27 stars, last pushed 25d ago), with no licence file. It adds 91 tokens to every session and 4,380 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
ai-image-creator
Generate, edit-from-reference, or analyze images with AI via OpenRouter (gemini, geminipro, riverflow, flux2, seedream, gpt5, gpt5.4; Cloudflare AI Gateway BYOK). Also analyze a video (--analyze-video, read-only — no video generated) into a text description for video prompts. Use when the user asks to generate an…
task-breakdown
Group a session-metrics session's turns into higher-level SEMANTIC TASKS ("what was I actually trying to do") and render a Tasks companion page (tasks.html + tasks.md) with a worth-it / mixed / likely-waste verdict per task. Trigger when the user runs /task-breakdown, when session-metrics suggests a task breakdown…
audit-session-metrics
Audit a session-metrics JSON export for token-usage waste and produce a plain-English findings report. Trigger when the user runs /audit-session-metrics, when session-metrics suggests an audit after an HTML export, or when the user asks to audit / review / find waste in a saved session-metrics JSON. Two modes: "quick"…
claude-docs-consultant
Consult official Claude Code documentation from code.claude.com using selective fetching. Use when working on hooks, skills, subagents, plugins, agent teams, MCP servers, permissions, settings, CI/CD (GitHub Actions, GitLab), IDE extensions (VS Code, JetBrains), desktop/web app features, scheduling, memory/CLAUDE.md…
session-metrics
Tally Claude Code session token usage and cost estimates from the raw JSONL conversation log. Trigger when the user asks about session cost, token usage, API spend, cache hit rate, input/output tokens, or wants a breakdown of how much a Claude Code session has cost. Also trigger for "how much have we spent", "show me…
consult-codex
Dual-AI code analysis pairing OpenAI Codex with Claude code-searcher — the lightest consult variant, two citation-verified perspectives. Use for a quick second opinion on a code question.