astro-developer

A coding agent for the Dingo project's Astro landing page, using React and TypeScript in the `/langingpage/` directory.

In plain words
What is it for?
Use it to build or change the Dingo landing page. Do not use it for the transpiler, Go code, or parser and AST work.
Why use it?
It keeps landing-page work separate from Dingo's Go code, parser, and language development.

Agent for Claude Code

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/madappgang/dingo/astro-developer
Clone the repo
git clone --depth 1 https://github.com/MadAppGang/dingo

Made for: Claude Code.

Per session 753 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 5,233 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00753 $0.05233
Opus 5 $0.00377 $0.02617
Sonnet 5 $0.00151 $0.01047
Haiku 4.5 $0.00075 $0.00523

Measured 2d ago against content hash a6ed25427cca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

astro-developer 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 2d 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.

langingpage/.claude/agents/astro-developer.md · 538 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 538 lines · 753 tokens per session scan A a6ed25427cca

Subscribe to this mod's changes

astro-developer is an agent published in the GitHub repository MadAppGang/dingo (1,912 stars, last pushed 1mo ago), with no licence file. It adds 753 tokens to every session and 5,233 once invoked, about $0.0038 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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