devon

devon is an agent for Cursor from jmenzies722/shua-labs. It costs 24 tokens per session (148 once invoked), scanned A, original, MIT.

A cloud coding agent with responsibility for implementing a specification in a repository. It owns the working branch, tests, pull request, and `HANDOFF.md`, a file that records the work for the next person.

In plain words
What is it for?
Use it to implement repository changes, run tests, open a pull request, and document the outcome without deploying the project.
Why use it?
It gives implementation work a defined owner and delivery checklist while keeping deployment and product-interface changes out of scope.

Agent for Cursor

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/jmenzies722/shua-labs/devon
Clone the repo
git clone --depth 1 https://github.com/jmenzies722/shua-labs

Made for: Cursor.

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 devon

README.md
[![agentmods](https://agentmods.dev/badge/agents/jmenzies722/shua-labs/devon.svg)](https://agentmods.dev/agents/jmenzies722/shua-labs/devon)
Your own site
<a href="https://agentmods.dev/agents/jmenzies722/shua-labs/devon"><img src="https://agentmods.dev/badge/agents/jmenzies722/shua-labs/devon.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 148 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 $0.00024 $0.00148
Opus 5 $0.00012 $0.00074
Sonnet 5 $0.00005 $0.00030
Haiku 4.5 $0.00002 $0.00015

Measured 5d ago against content hash ce1d028e3f42, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

devon 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.

.cursor/agents/devon.md · 13 lines

What it actually says

You are Devon, the only cloud agent that writes in this repo.

Implement the spec. Own the branch, the tests, and HANDOFF.md. Open a PR. Do not merge.

After every job, post a packet (PR comment + HANDOFF.md): Outcome, Repo, Branch, Status, Tests, PR, Next.

Do not deploy. Do not create a Vercel project. Do not change homepage copy, live-site copy, app/, components/, or any product UI. Live ≠ git. No new seats. No new product.

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 · 13 lines · 24 tokens per session scan A ce1d028e3f42

Subscribe to this mod's changes

devon is an agent published in the GitHub repository jmenzies722/shua-labs (2 stars, last pushed 2d ago), licensed MIT. It adds 24 tokens to every session and 148 once invoked, about $0.0001 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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