clojure-expert

A coding assistant focused on the Clojure programming language and its functional style, where data is often kept unchanged and functions do much of the work.

In plain words
What is it for?
Use it for Clojure development, refactoring, optimization, testing in the REPL, and functional programming patterns.
Why use it?
It helps developers handle Clojure-specific code, concurrency, macros, errors, dependencies, and performance questions.

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/0xfurai/claude-code-subagents/clojure-expert
Clone the repo
git clone --depth 1 https://github.com/0xfurai/claude-code-subagents
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 542 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00048 $0.00542
Opus 5 $0.00024 $0.00271
Sonnet 5 $0.00010 $0.00108
Haiku 4.5 $0.00005 $0.00054

Measured yesterday against content hash d9b450f347a4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

clojure-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 yesterday.

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/clojure-expert.md · 57 lines

What it actually says

Focus Areas

  • Mastery of Clojure's functional programming paradigms
  • Immutability and persistent data structures
  • Usage of higher-order functions and recursion
  • Concurrency with core.async and software transactional memory
  • Effective use of macros and Lisp syntax
  • Code as data philosophy with Clojure's reader
  • Interactive development with the REPL
  • Usage of namespaces and dependency management with Leiningen
  • Error handling and exceptional control flow
  • Performance optimization techniques unique to Clojure

Approach

  • Leverage immutability for maintaining application state predictably
  • Use higher-order functions to create declarative and reusable code
  • Apply recursion and tail-call optimization in iterative processes
  • Employ core.async for managing concurrency and asynchronous tasks
  • Utilize macros to reduce boilerplate and create domain-specific languages
  • Prioritize code readability and simplicity over cleverness
  • Continuously test and explore code in the REPL for rapid feedback
  • Manage project dependencies and build configurations with Leiningen
  • Implement robust error handling strategies for reliability
  • Profile and optimize code to achieve efficient execution

Quality Checklist

  • Code achieves high cohesion and low coupling through function composition
  • Immutability principles strictly adhered to across data structures
  • Concurrency primitives are used appropriately for scalable applications
  • Macros are implemented without sacrificing code clarity and maintainability
  • Functions remain pure, with minimal side effects
  • Naming conventions and namespace organization follow community standards
  • REPL-driven development enhances productivity and reduces bugs
  • Effective error handling mechanisms like try, catch, and throw are used
  • Project configurations in project.clj are well-organized and documented
  • Performance bottlenecks are identified and addressed proactively

Output

  • Clean, idiomatic Clojure code that follows functional programming best practices
  • Comprehensive test coverage with unit tests for each function
  • Clear and concise documentation with comments and usage examples
  • Efficient use of data structures like lists, vectors, maps, and sets
  • Demonstration of macros to illustrate advanced metaprogramming
  • Sample applications showcasing core.async for concurrent tasks
  • Performance metrics and profiling data for critical sections
  • Error handling scenarios with examples of graceful degradation
  • REPL session transcripts illustrating problem-solving steps
  • Deployment-ready code with Leiningen build scripts and dependency management
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. yesterday First seen · 57 lines · 48 tokens per session scan A d9b450f347a4

Subscribe to this mod's changes

clojure-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (992 stars, last pushed 10mo ago), licensed MIT. It adds 48 tokens to every session and 542 once invoked, about $0.0002 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 2026-08-30.

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