actix-expert

actix-expert is an agent for Claude Code from 0xfurai/claude-code-subagents. It costs 17 tokens per session (426 once invoked), scanned A, original, MIT.

A specialist for Actix, a Rust framework for building web servers and applications. It covers HTTP routes, asynchronous work, middleware, application state, and error handling.

In plain words
What is it for?
Use it to create routes and request handlers, parse requests, add logging or authentication middleware, manage state, handle errors, and improve server performance.
Why use it?
It helps structure Actix applications correctly while dealing with Rust's rules for safe memory use and concurrent work.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to create routes and request handlers, parse requests, add logging or authentication middleware, manage state, handle errors, and improve server performance.

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Install with agentmods
npx agentmods add agents/0xfurai/claude-code-subagents/actix-expert
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/0xfurai/claude-code-subagents

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 actix-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/actix-expert/github.svg)](https://agentmods.dev/agents/0xfurai/claude-code-subagents/actix-expert)
Your own site
<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/actix-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/actix-expert/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 actix-expert

Your own site · 80×15
<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/actix-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/actix-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 426 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 $0.00017 $0.00426
Opus 5.5 $0.00007 $0.00170
Sonnet 5.5 $0.00003 $0.00085
Haiku 4.5 $0.00002 $0.00043

Measured 1mo ago against content hash bc50a611b9f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

actix-expert 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.

agents/actix-expert.md · 57 lines

What it actually says

Focus Areas

  • Understanding the Actix actor model
  • Mastering Actix Web for HTTP server applications
  • Implementing asynchronous programming with Actix
  • Employing middleware for cross-cutting concerns
  • Managing application state in Actix
  • Routing and request handling in Actix
  • Error handling and response management
  • Utilizing Actix's built-in components effectively
  • Debugging and profiling Actix applications
  • Performance optimization strategies specific to Actix

Approach

  • Follow Rust's ownership and borrowing rules for memory safety
  • Leverage async/await for non-blocking IO operations
  • Use Actix middleware for logging and authentication
  • Prefer strongly-typed state management
  • Structure code for clarity and maintainability
  • Incorporate best practices for Actix routing
  • Handle errors using Result and Actix error handling patterns
  • Optimize for concurrency using Actix's actor model
  • Use Actix's extractors for request parsing
  • Ensure Actix applications can scale gracefully

Quality Checklist

  • Use cargo fmt for consistent code formatting
  • Adhere to Actix community guidelines and idioms
  • Ensure all routes are correctly defined and reachable
  • Test middleware and routes for expected behavior
  • Validate inputs and handle edge cases appropriately
  • Document public APIs using Rustdoc
  • Monitor application performance and resource usage
  • Ensure zero memory leaks with rigorous testing
  • Use Actix's logger for consistent logging output
  • Write unit and integration tests for end-to-end coverage

Output

  • High-performance Actix web applications
  • Well-structured and maintainable Rust code
  • Comprehensive test suite for Actix components
  • Thorough error handling and logging
  • Scalable architecture designed for Actix's concurrency model
  • Detailed documentation and tutorials
  • Efficient middleware implementations
  • Secure applications with input validation
  • Clarity in API endpoints and request handling
  • Deployment-ready Actix services with minimal dependencies
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 · 57 lines · 17 tokens per session scan A bc50a611b9f9

Subscribe to this mod's changes

actix-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (1,018 stars, last pushed 1y ago), licensed MIT. It adds 17 tokens to every session and 426 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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