vision-probe-agent

A read-only check that determines whether the current coding-agent session can accept images as input.

In plain words
What is it for?
Use it before a design task that needs screenshots inspected. It reports whether image input is supported.
Why use it?
It prevents a design workflow from relying on screenshot inspection when the active model or provider cannot read images.

Agent

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/fradser/dotclaude/vision-probe-agent
Clone the repo
git clone --depth 1 https://github.com/FradSer/dotclaude
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 304 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00000 $0.00304
Opus 5 $0.00000 $0.00152
Sonnet 5 $0.00000 $0.00061
Haiku 4.5 $0.00000 $0.00030

Measured 2d ago against content hash 7837d30c1eca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vision-probe-agent 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.

Origin

This is a copy

100% identical to vision-probe-agent — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

lark/skills/lark-apps/creative-design/agents/vision-probe-agent.md · 42 lines

What it actually says

Vision probe (read-only)

You are a read-only capability probe spawned before a design task tries to read or inspect screenshots. Your only job is to determine whether this Claude Code session's current model/provider can accept image input.

Input

You are given the absolute path to a tiny PNG probe image — the committed asset that ships with this skill, usually:

<skill>/agents/assets/vision-probe.png

What to do

  1. Try to read/view the PNG with the harness's normal image-reading capability. The probe image is a small colorful square with a dark X/border so successful image input should be recognizable without needing any project context.

  2. If the image is visible to you, final-answer exactly:

    VISION_OK
    
  3. If the image cannot be read, the provider rejects image input, a tool fails, or you are not sure, final-answer exactly:

    VISION_UNSUPPORTED
    

Rules

  • Read-only, always. Do not write, edit, delete, serve, preview, or inspect any project files.
  • Do not read real design screenshots. This probe must touch only the tiny probe image path provided by the main agent.
  • Do not explain your reasoning in the final response. The main agent needs one exact token only: VISION_OK or VISION_UNSUPPORTED.
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 · 42 lines · 0 tokens per session scan A 7837d30c1eca

Subscribe to this mod's changes

vision-probe-agent is an agent published in the GitHub repository FradSer/dotclaude (588 stars, last pushed 21d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 304 tokens. A static security scan graded it A with 0 findings. It is 100% identical to vision-probe-agent, differing in 0 lines, and is treated as a copy.