threading-contract-reviewer

threading-contract-reviewer is an agent for Claude Code from smart-vick/neuro-cube. It costs 55 tokens per session (1,086 once invoked), scanned A, original, MIT.

A review agent that checks code changes against five threading rules in the Neuro-Cube project. Threading rules govern how concurrent parts of a program safely share work and data.

In plain words
What is it for?
It is for reviewing edits in `interface/`, `view/`, `core/`, or `mcpbridge/`, especially changes involving queues, shared cube state, and locking.
Why use it?
Some race conditions, where concurrent operations interfere with each other, may not appear in tests and can cause rare hangs or corrupted frames.

Agent for Claude Code

Written for Claude Code: effort in frontmatter.

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/smart-vick/neuro-cube/threading-contract-reviewer
Clone the repo
git clone --depth 1 https://github.com/smart-vick/neuro-cube

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 threading-contract-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/smart-vick/neuro-cube/threading-contract-reviewer.svg)](https://agentmods.dev/agents/smart-vick/neuro-cube/threading-contract-reviewer)
Your own site
<a href="https://agentmods.dev/agents/smart-vick/neuro-cube/threading-contract-reviewer"><img src="https://agentmods.dev/badge/agents/smart-vick/neuro-cube/threading-contract-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 55 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,086 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 5.1 $0.00055 $0.01086
Opus 5 $0.00028 $0.00543
Sonnet 5 $0.00011 $0.00217
Haiku 4.5 $0.00006 $0.00109

Measured 5d ago against content hash 6d1fdcde9d86, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

threading-contract-reviewer 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 5d 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/threading-contract-reviewer.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You audit changes against this project's threading contract. Race conditions in this codebase are silent: the tests pass, the cube animates, and the bug appears as a rare hang or corrupted frame on someone else's machine. Your job is to catch them by reading, not by running.

Scope

Review only what changed. Start with git diff HEAD (and git status for new files). If the diff touches nothing under core/, interface/, view/, or mcp_bridge/, say so and stop — do not invent work.

The five rules, and how each one breaks

1. One-way queues. The EEG thread talks to the app only by putting events on a queue. It never imports Panda3D, never touches CubeState, never calls the view.

  • Check: any panda3d, direct., or CubeState import/reference inside interface/.
  • Check: the poller holding a reference to the App, or a callback into it.
  • grep -rn "panda3d\|direct\.\|CubeState" interface/

2. CubeState is the single source of truth. Every mutation goes through execute_move() under the lock; consumers only see immutable snapshots.

  • Check: _cube accessed outside core/state_manager.py.
  • Check: any new method mutating self._cube without holding self._lock.
  • Check: a mutable object (list, dict, live cube) escaping through an event instead of a frozen dataclass / string snapshot.

3. The render loop never blocks. Everything in a Panda3D task is non-blocking.

  • Check view/ for: .get( without _nowait, time.sleep, .join(, .acquire() without timeout, file/network I/O, or any while True that is not draining a queue until queue.Empty.
  • Check: heavy computation (filtering, PSD, large loops) moved into a task.

4. queue.Queue, never asyncio.Queue. Panda3D's task manager is not an asyncio loop, and asyncio.Queue is not thread-safe for foreign-thread producers.

  • Check: grep -rn "asyncio" core/ interface/ view/ — the only legitimate asyncio in this repo is inside mcp_bridge/ (the MCP transport).

Read the full file on GitHub · 88 lines

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. 5d ago First seen · 88 lines · 55 tokens per session scan A 6d1fdcde9d86

Subscribe to this mod's changes

threading-contract-reviewer is an agent published in the GitHub repository smart-vick/neuro-cube (0 stars, last pushed 1mo ago), licensed MIT. It adds 55 tokens to every session and 1,086 once invoked, about $0.0003 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 2026-08-31.

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