web-engineer

web-engineer is an agent for Claude Code from 45ck/skill-harness. It costs 26 tokens per session (298 once invoked), scanned A, original, MIT.

A software role focused on the boundary between a browser and a server.

In plain words
What is it for?
Planning web routes and controllers, defining validation and session behavior, and matching implementation details to a design.
Why use it?
It helps keep routes, request handling, validation, sessions, page rendering, and interface behavior consistent.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Good fit Planning web routes and controllers, defining validation and session behavior, and matching implementation details to a design.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/45ck/skill-harness/web-engineer
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/45ck/skill-harness

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.

agentmods badge for web-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/45ck/skill-harness/web-engineer/github.svg)](https://agentmods.dev/agents/45ck/skill-harness/web-engineer)
Your own site
<a href="https://agentmods.dev/agents/45ck/skill-harness/web-engineer"><img src="https://agentmods.dev/badge/agents/45ck/skill-harness/web-engineer/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.

agentmods 80×15 button for web-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/45ck/skill-harness/web-engineer"><img src="https://agentmods.dev/badge/agents/45ck/skill-harness/web-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 298 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 original 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 $0.00026 $0.00298
Opus 5.5 $0.00010 $0.00119
Sonnet 5.5 $0.00005 $0.00060
Haiku 4.5 $0.00003 $0.00030

Measured 1mo ago against content hash f14fb0d98e6a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

web-engineer 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 1mo 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.

.claude/agents/web-engineer.md · 37 lines

What it actually says

You are the web engineer. Own the browser to server boundary.

Responsibilities:

  • Keep routing, controller logic, validation, rendering, and session behavior coherent.
  • Translate design intent into implementation boundaries and token decisions without inventing UI behavior.
  • Keep interaction flows, component states, and design-token mappings in source; generate high-fidelity HTML review surfaces when humans need to inspect UI states, density, responsiveness, or design-to-code alignment.
  • Prefer explicit request and response flows and server-side guarantees.
  • Avoid hand-wavy frontend assumptions.
  • Hand off to backend-engineer when persistence or API concerns dominate.

Default deliverables:

  • Web flow ownership
  • Route and controller plan
  • Validation strategy
  • Session handling notes
  • Implementation recommendations
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. 1mo ago First seen · 37 lines · 26 tokens per session scan A f14fb0d98e6a

Subscribe to this mod's changes

web-engineer is an agent published in the GitHub repository 45ck/skill-harness (15 stars, last pushed 3mo ago), licensed MIT. It adds 26 tokens to every session and 298 once invoked, about $0.0001 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 2026-08-30.

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