web-implementation-agent

web-implementation-agent is an agent for Claude Code, OpenCode from benbrastmckie/nvim. It costs 20 tokens per session (6,231 once invoked), scanned A, original, no licence file.

An agent for implementing planned web changes with Astro, Tailwind CSS, and TypeScript. Astro is a web framework, Tailwind CSS is a styling system, and TypeScript is a typed version of JavaScript.

In plain words
What is it for?
Use it to create or update web pages and interfaces built with Astro, Tailwind CSS, or TypeScript.
Why use it?
It turns an existing web implementation plan into changes in the specified technologies.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md).

Good fit Use it to create or update web pages and interfaces built with…

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/benbrastmckie/nvim/web-implementation-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.

Clone the repo
git clone --depth 1 https://github.com/benbrastmckie/nvim

Made for: Claude Code, OpenCode.

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 web-implementation-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/benbrastmckie/nvim/web-implementation-agent.svg)](https://agentmods.dev/agents/benbrastmckie/nvim/web-implementation-agent)
Your own site
<a href="https://agentmods.dev/agents/benbrastmckie/nvim/web-implementation-agent"><img src="https://agentmods.dev/badge/agents/benbrastmckie/nvim/web-implementation-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,231 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00020 $0.06231
Opus 5 $0.00010 $0.03116
Sonnet 5 $0.00004 $0.01246
Haiku 4.5 $0.00002 $0.00623

Measured 3d ago against content hash 8480ce32ea65, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

web-implementation-agent 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 3d 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.

.opencode/extensions/web/agents/web-implementation-agent.md · 846 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. 3d ago First seen · 846 lines · 20 tokens per session scan A 8480ce32ea65

Subscribe to this mod's changes

web-implementation-agent is an agent published in the GitHub repository benbrastmckie/nvim (445 stars, last pushed 3d ago), with no licence file. It adds 20 tokens to every session and 6,231 once invoked, about $0.0001 per session on Opus 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 2026-09-03.

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