doctor

doctor is a command for coding agents from jdanigo/hydraia. It costs 25 tokens per session (305 once invoked), scanned A, original, MIT.

A dependency checker and installer for Hydraia's required command-line tools and, when detected, end-to-end browser binaries. End-to-end tests check complete user journeys through an application.

In plain words
What is it for?
Use it to check Node.js, npm, Python, pip, Git, codegraph, markitdown, and detected browser-test dependencies, then install approved missing components.
Why use it?
It shows which prerequisites are missing or outdated and asks before installing them. This avoids unexplained setup failures and unwanted downloads.

Command

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the hydraia plugin — 51 skills, 15 commands, 26 agents, 4 hooks shipped together

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 commands/jdanigo/hydraia/doctor
Clone the repo
git clone --depth 1 https://github.com/jdanigo/hydraia

Or install hydraia, the plugin that ships this one along with the rest of its 51 skills, 15 commands, 26 agents, 4 hooks.

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 doctor

README.md
[![agentmods](https://agentmods.dev/badge/commands/jdanigo/hydraia/doctor.svg)](https://agentmods.dev/commands/jdanigo/hydraia/doctor)
Your own site
<a href="https://agentmods.dev/commands/jdanigo/hydraia/doctor"><img src="https://agentmods.dev/badge/commands/jdanigo/hydraia/doctor.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 305 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 $0.00025 $0.00305
Opus 5 $0.00013 $0.00152
Sonnet 5 $0.00005 $0.00061
Haiku 4.5 $0.00003 $0.00030

Measured 5d ago against content hash d6a2edc1f438, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

doctor 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.

commands/doctor.md · 13 lines

What it actually says

Run Hydraia's dependency doctor.

  1. Run "${CLAUDE_PLUGIN_ROOT}/hooks/doctor.sh" --check and show me the full output. It also reports this repo's resolved storage (artifacts base, in-repo vs external, and the auto-commit setting) under -- storage --.
  2. If any prerequisite is missing (node, npm, python3, pip, git), tell me exactly how to install it — do NOT attempt to install prerequisites yourself.
  3. If codegraph or markitdown is "not installed" or outdated, ask me to confirm before installing. Only after I confirm, run "${CLAUDE_PLUGIN_ROOT}/hooks/doctor.sh" --install --yes and report the results.
  4. If the check reports an E2E framework detected with browsers "not installed", ask me to confirm before installing (mention the one-time ~100-300MB download). Only after I confirm, run "${CLAUDE_PLUGIN_ROOT}/hooks/doctor.sh" --install-e2e --yes and report the results. Never do this if no E2E framework was detected — that's a plan-level decision, not this command's.
  5. If everything is already installed and current, say so and stop — do not install anything.
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 · 25 tokens per session scan A d6a2edc1f438

Subscribe to this mod's changes

doctor is a command published in the GitHub repository jdanigo/hydraia (8 stars, last pushed 16d ago), licensed MIT. It adds 25 tokens to every session and 305 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.