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Nested swiss-knife reference for Zhipu / Z.AI coding-plan capabilities. Use the Zhipu / Z.AI GLM coding-plan subscription as a unified backend for vision (multimodal screenshot/diagram analysis), web search, web page reading, and zread (open-source GitHub repo browsing). One API key unlocks all four MCP servers. This skill is a thin pointer: it tells you how to source the key, pick the region (Z.AI international vs BigModel mainland), and where the live docs are. MCP server registration is owned
Passed 18 of 21 test cases with the skill, and 6 of 21 without it.
and 10 more in the full report
13 fixed6 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 13 test cases the skill fixed. Same model, same prompt, with and without the skill.
Which tool in the Zhipu MCP suite should be called to perform web searches and retrieve search snippets?
| Checked | Without skill | With skill |
|---|---|---|
| Selects the webSearchPrime tool | Missed | Passed |
The instructions your model reads when the skill loads.
Thin pointer. Live docs are the source of truth —
curlthem when you need depth.
When you need details — current models, exact tool parameters, per-tier quotas, MCP package or endpoint changes — fetch these. Both regions publish equivalent content; pick the one matching the user's account. URLs verified live 2026-04-29.
| Topic | International (Z.AI) | Mainland (BigModel / 智谱) |
|---|---|---|
| Coding-plan overview | docs.z.ai/devpack/overview | docs.bigmodel.cn/cn/coding-plan/overview |
| Vision MCP server | docs.z.ai/devpack/mcp/vision-mcp-server | docs.bigmodel.cn/cn/coding-plan/mcp/vision-mcp-server |
| Web search MCP | docs.z.ai/devpack/mcp/search-mcp-server | docs.bigmodel.cn/cn/coding-plan/mcp/search-mcp-server |
| Web reader MCP | docs.z.ai/devpack/mcp/reader-mcp-server | docs.bigmodel.cn/cn/coding-plan/mcp/reader-mcp-server |
| Zread (GitHub repos) MCP | docs.z.ai/devpack/mcp/zread-mcp-server | docs.bigmodel.cn/cn/coding-plan/mcp/zread-mcp-server |
| Doc index (use if any URL above stales) | docs.z.ai/llms.txt | docs.bigmodel.cn/llms.txt |
Note the URL pattern asymmetry: international is /devpack/mcp/..., mainland is /cn/coding-plan/mcp/.... If a path 404s, fetch the llms.txt index above to find the new path — they shift.
Always curl (or use web_search(action="manual")) when you need fresh info — the skill snapshot will go stale.
A single Z.AI / BigModel coding-plan key unlocks four MCP servers. Per-tier quotas (snapshot — verify against the live page):
| Capability | Lite | Pro | Max |
|---|---|---|---|
| Vision MCP (8 tools — see below) | shared | shared | shared |
Web search (webSearchPrime) | 100 / total | 1,000 / total | 4,000 / total |
Web reader (webReader) | 100 / total | 1,000 / total | 4,000 / total |
| Zread (3 tools) | 100 / total | 1,000 / total | 4,000 / total |
Quotas are cumulative-total, not daily — once exhausted, you're done until the plan period rolls over.
| Modality | Server | Tools |
|---|---|---|
| vision | stdio: npx -y @z_ai/mcp-server | image_analysis, extract_text_from_screenshot, ui_to_artifact, diagnose_error_screenshot, understand_technical_diagram, analyze_data_visualization, ui_diff_check, video_analysis |
| web search | http: https://api.z.ai/api/mcp/web_search_prime/mcp | webSearchPrime |
test cases passed, vs 6 / 21 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.