verify

verify is a skill for Claude Code, Codex from gethouston/houston. It costs 33 tokens per session (488 once invoked), scanned A, original, MIT.

A runtime testing workflow for Houston, a desktop app with a web interface and a supporting local process. It checks the real local process over HTTP and tests the web interface with Playwright, a browser-testing tool.

In plain words
What is it for?
Use it to verify Houston file and board changes, check HTTP endpoints and live event updates, and take temporary screenshots of the interface at different screen sizes.
Why use it?
It catches problems that static code checks may miss by testing the running system and its user interface together. It also uses a fake local process for repeatable web tests without external accounts.

Skill for Claude CodeCodex

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 skills/gethouston/houston/verify
Any agent
npx skills add gethouston/houston --skill verify
Clone the repo
git clone --depth 1 https://github.com/gethouston/houston

Made for: Claude Code, Codex.

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 verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/gethouston/houston/verify.svg)](https://agentmods.dev/skills/gethouston/houston/verify)
Your own site
<a href="https://agentmods.dev/skills/gethouston/houston/verify"><img src="https://agentmods.dev/badge/skills/gethouston/houston/verify.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 488 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00033 $0.00488
Opus 5 $0.00016 $0.00244
Sonnet 5 $0.00007 $0.00098
Haiku 4.5 $0.00003 $0.00049

Measured 5d ago against content hash c36e9add6fc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

verify scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://127.0.0.1:48123/health
packages/web/.claude/skills/verify/SKILL.md · 45 lines

What it actually says

Verifying Houston changes at runtime

TS host (the real desktop sidecar), hermetically

mkdir -p /tmp/hh/workspaces/Personal/"Agent 1"
HOUSTON_HOME=/tmp/hh HOUSTON_HOST_PORT=48123 HOUSTON_HOST_TOKEN=t \
  node --import tsx packages/host/src/local/main.ts
# wait for {"status":"ok"}:
curl -s http://127.0.0.1:48123/health
  • Auth: Authorization: Bearer t. Agent ids are <Workspace>/<Agent> — URL-encode the slash (/agents/Personal%2FAgent%201/files).
  • SSE reactivity feed: curl -N 'http://127.0.0.1:48123/v1/events?token=t'.
  • The runtime is only spawned for chat turns; files/agents routes need no provider credentials.

Web UI (the same React tree the desktop ships)

Playwright + the fake host (@houston/fake-host), all boot handled by the harness:

pnpm --filter houston-web test:e2e             # whole suite
cd packages/web && npx playwright test e2e/files.spec.ts --reporter=line
  • Specs live in packages/web/e2e/; fixtures reset the fake host per test.
  • One-off screenshots: drop a temp spec in e2e/, page.screenshot(...), delete it after (testDir is pinned to e2e/).
  • Gotchas: controlled inputs never match input[value=…] (use getByRole("textbox")); headless Chromium names blob downloads with a GUID — assert downloaded bytes, not suggestedFilename().

Gates (CI-equivalent, not a substitute for the above)

pnpm check · pnpm typecheck (ui+app+web) · pnpm --filter @houston/host test · cd app && pnpm check-locales · pnpm check:boundaries

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 · 45 lines · 33 tokens per session scan A c36e9add6fc5

Subscribe to this mod's changes

verify is a skill published in the GitHub repository gethouston/houston (112 stars, last pushed today), licensed MIT. It adds 33 tokens to every session and 488 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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