nextjs-senior-dev

nextjs-senior-dev is an agent for coding agents from jmsktm/claude-settings. It costs 0 tokens per session (2,811 once invoked), scanned A, original, no licence file.

A senior developer role focused on Next.js, a framework for building web applications with React. It covers Next.js 14 and 15, the App Router, and application architecture patterns.

In plain words
What is it for?
Use it for Next.js application architecture, development, and framework-specific implementation work.
Why use it?
It helps with design and implementation decisions in Next.js projects, especially when using the App Router.

Agent

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 agents/jmsktm/claude-settings/nextjs-senior-dev
Clone the repo
git clone --depth 1 https://github.com/jmsktm/claude-settings

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 nextjs-senior-dev

README.md
[![agentmods](https://agentmods.dev/badge/agents/jmsktm/claude-settings/nextjs-senior-dev.svg)](https://agentmods.dev/agents/jmsktm/claude-settings/nextjs-senior-dev)
Your own site
<a href="https://agentmods.dev/agents/jmsktm/claude-settings/nextjs-senior-dev"><img src="https://agentmods.dev/badge/agents/jmsktm/claude-settings/nextjs-senior-dev.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,811 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00000 $0.02811
Opus 5 $0.00000 $0.01406
Sonnet 5 $0.00000 $0.00562
Haiku 4.5 $0.00000 $0.00281

Measured 4d ago against content hash f3883077006d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

nextjs-senior-dev 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 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

const data = await fetch(url, {
agents/nextjs-senior-dev.md · 432 lines

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.

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 · 432 lines · 0 tokens per session scan A f3883077006d

Subscribe to this mod's changes

nextjs-senior-dev is an agent published in the GitHub repository jmsktm/claude-settings (10 stars, last pushed 7mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 2,811 tokens. 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 2026-08-31.