What is frontend-dev?

A frontend development guide for the project's example web interfaces. Frontends are the parts of an application that users see and interact with; these examples use React, Vite, Tailwind, and AG-UI.

Use it to build or change the reference chat interface, tool cards, approval flows, session management, and example integrations with CopilotKit or the AG-UI client.

It gives developers the project's expected structure, event flow, API endpoints, state-management locations, and TypeScript conventions in one place.

How namanrajpal/acp-to-agui configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to namanrajpal/acp-to-agui. 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/namanrajpal/acp-to-agui/main/.claude/agents/frontend-dev.md

Clone the repo

git clone --depth 1 https://github.com/namanrajpal/acp-to-agui

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/namanrajpal/acp-to-agui/frontend-dev/github.svg)](https://agentmods.dev/agents/namanrajpal/acp-to-agui/frontend-dev)

Your own site

<a href="https://agentmods.dev/agents/namanrajpal/acp-to-agui/frontend-dev"><img src="https://agentmods.dev/badge/agents/namanrajpal/acp-to-agui/frontend-dev/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/agents/namanrajpal/acp-to-agui/frontend-dev"><img src="https://agentmods.dev/badge/agents/namanrajpal/acp-to-agui/frontend-dev.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 354 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.

Model	Per session	Once invoked
Fable 5.1	$0.00026	$0.00354
Opus 5.5	$0.00010	$0.00142
Sonnet 5.5	$0.00005	$0.00071
Haiku 4.5	$0.00003	$0.00035

Measured 2mo ago against content hash 7c47c31c255b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

frontend-dev 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.

.claude/agents/frontend-dev.md · 33 lines

What it actually says

You are a frontend developer working on the ACP→AG-UI bridge project's UI layer.

Project structure

example-frontends/custom-workspace-ui-demo/ — Full React frontend (Vite + Tailwind), components for chat, tool cards, approvals, session management
example-frontends/copilotkit-demo/ — CopilotKit integration (~20 lines)
example-frontends/httpagent-demo/ — Raw @ag-ui/client HttpAgent usage (~50 lines)

Key patterns

The reference UI consumes AG-UI events via SSE from GET /v2/tasks/{id}/events?runId=...
It also uses REST endpoints: POST /v2/tasks (create session), POST /v2/tasks/{id}/run (start run), POST /v2/tasks/{id}/approval (resolve tool approval)
CopilotKit and HttpAgent demos use the standard POST /ag-ui endpoint
State management is in example-frontends/custom-workspace-ui-demo/stores/ and example-frontends/custom-workspace-ui-demo/services/

When implementing

Use TypeScript strictly
Follow the existing component patterns in example-frontends/custom-workspace-ui-demo/components/
AG-UI event types are defined in example-frontends/custom-workspace-ui-demo/src/services/aguiTypes.ts
Test against the running backend (pnpm dev starts both)

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 · 33 lines · 26 tokens per session scan A 7c47c31c255b

Subscribe to this mod's changes

frontend-dev is an agent published in the GitHub repository namanrajpal/acp-to-agui (23 stars, last pushed 5mo ago), licensed MIT. It adds 26 tokens to every session and 354 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.

Frontend React acp acp-protocol agent agui bridge bridge-sdk

frontend-dev next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
frontend-devnamanrajpal/acp-to-agui	Agent	23	5mo ago	MIT	A	26	Claude Code
frontend-developerechoVic/blade-code	Agent	181	24d ago	MIT	A	41	Claude Code
shopify-expertOrcaQubits/agentic-commerce-skills-plugins	Agent	40	1mo ago	MIT	A	127	Claude Code
nextjs-expertarmanzeroeight/fastagent-plugins	Agent	29	3mo ago	MIT	A	53	Claude Code
react-architectarmanzeroeight/fastagent-plugins	Agent	29	3mo ago	MIT	A	38	Claude Code
frontend-leadarmanzeroeight/fastagent-plugins	Agent	29	3mo ago	MIT	A	40	Claude Code
react-build-resolverDekaPrayoga/AurixAgent	Agent	62	3mo ago	none	A	73	Claude Code

acp-to-agui: Agent for Claude Code