using-vlm-mcp

using-vlm-mcp is a skill for Claude Code, Codex from YC-CLT/VLM-mcp. It costs 21 tokens per session (1,104 once invoked), scanned A, original, MIT.

A skill for using VLM-mcp, a server that analyzes images with visual-language models. It covers image descriptions, text extraction from images, chart interpretation, translation, visual questions, and follow-up conversations.

In plain words
What is it for?
Use it to describe images, read text from them, interpret charts, translate visible text, or ask follow-up questions about an image.
Why use it?
It gives the agent a defined way to send images for analysis and manage multi-step conversations with the image model.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to describe images, read text from them, interpret charts, translate visible text, or ask follow-up questions about an image.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yc-clt/vlm-mcp/using-vlm-mcp
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.

Any agent
npx skills add YC-CLT/VLM-mcp --skill using-vlm-mcp
Clone the repo
git clone --depth 1 https://github.com/YC-CLT/VLM-mcp

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 using-vlm-mcp

README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for using-vlm-mcp

Your own site · 80×15
<a href="https://agentmods.dev/skills/yc-clt/vlm-mcp/using-vlm-mcp"><img src="https://agentmods.dev/badge/skills/yc-clt/vlm-mcp/using-vlm-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,104 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00021 $0.01104
Opus 5.5 $0.00008 $0.00442
Sonnet 5.5 $0.00004 $0.00221
Haiku 4.5 $0.00002 $0.00110

Measured 2mo ago against content hash e5a0a8fb1fe4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

using-vlm-mcp 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 2mo 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.

skills/using-vlm-mcp/SKILL.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Using VLM-MCP

Overview

通过 VLM-mcp MCP 工具对图片进行单次分析、模板处理或多轮对话。核心原则:无会话必传图,有会话可追问,用完必须关。

触发场景

用户提供图片并要求:描述、分析、OCR 提取文字、图表解读、翻译图中文字、基于图片问答。

OCR 优先用 ocr_image。不要优先用 analyze_image + template: "ocr" ,效果不好再换。

不用此 skill 的场景: 纯文本分析(无图片)、非 VLM-mcp 工具的图片处理。

快速参考

调用方式:run_mcp(server_name="vlm-mcp", tool_name="工具名", args={...})。 image 支持三种格式:本地绝对路径(如 D:/images/photo.png)、URL(https://...)、base64 data URI。

工具 操作 args
ocr_image 本地 OCR image → [{text, box, confidence}, ...]
analyze_image 自由描述 image, prompt
analyze_image 模板描述 image, template: "describe"
analyze_image 模板 OCR image, template: "ocr"
analyze_image 图表解读 image, template: "chart"
analyze_image 翻译图中文字 image, template: "translate", params: {target_lang}
analyze_image 图片问答 image, template: "qa", params: {question}
analyze_image 指定后端 image, prompt, backend
create_session 创建会话 backend(可选)→ {session_id}
close_session 关闭会话 session_id
list_sessions 活跃会话 无
list_backends_tool 可用后端 无
list_templates 可用模板 无

analyze_image 返回:{text, model, tokens_used, cache_hit, session_id}。

使用模式

模板分析

先用 list_templates 查看可用模板,再按上方快速参考表调用(独立调用,无需 session)。

多轮对话

s = run_mcp("vlm-mcp", "create_session", args={"backend": "dashscope"})  # 可选 backend
sid = s["session_id"]
run_mcp("vlm-mcp", "analyze_image", args={"image": "doc.png", "prompt": "总结", "session_id": sid})
run_mcp("vlm-mcp", "analyze_image", args={"prompt": "第三节?", "session_id": sid})        # 追问可不传图
run_mcp("vlm-mcp", "close_session", args={"session_id": sid})                              # 用完必须关

常见错误

错误 现象 正确做法
无会话忘传 image INVALID_PARAMS: image is required 无会话时 image 必传
不关会话 占槽位(每后端最多 5 个),后续创建报 SESSION_FULL 用完 close_session;若已占满,list_sessions 查孤儿 → 逐一 close_session
同时传 template 和 prompt template 优先,prompt 被忽略 只传其中一个
会话内换后端 SESSION_BACKEND_MISMATCH 新建 session 换后端
image 用相对路径 IMAGE_NOT_FOUND 用绝对路径、URL 或 base64
用 analyze_image + template: "ocr" 做简单提取 浪费在线 API 额度、延迟高 优先用 ocr_image
模板名拼错 TEMPLATE_NOT_FOUND list_templates 查看可用模板名
忘传模板必填参数 INVALID_PARAMS: Missing required param list_templates 查看模板所需参数

Read the full file on GitHub · 74 lines

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. 2mo ago Changed · -30 lines · -14 tokens per session e5a0a8fb1fe4
  2. 2mo ago First seen · 104 lines · 35 tokens per session scan A 62fc97b833db

Subscribe to this mod's changes

using-vlm-mcp is a skill published in the GitHub repository YC-CLT/VLM-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 21 tokens to every session and 1,104 once invoked, about $0.0001 per session on Opus 5.5. 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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