Summary
GLM Coding Plan 的官方 MCP 工具(web_search_prime / web_reader)触发 429 限速的阈值极低且数值未公开,且与套餐额度无关,付费用户难以将其纳入日常工作流。
Environment
- GLM Coding Plan(付费订阅)
- MCP endpoints:
https://open.bigmodel.cn/api/mcp/web_search_prime/mcp, https://open.bigmodel.cn/api/mcp/web_reader/mcp
- Client: Claude Code (user-level remote HTTP MCP)
Observations (measured, 2026-09-12, single client, single account)
- 一天内约 8 次 MCP 调用,其中约一半返回:
{"error":{"code":"1302","message":"您的账户已达到速率限制,请您控制请求频率"}}
- 429 后 20+ 分钟不恢复(限速窗口看起来是小时级,而非分钟级 QPM)。
- 与套餐额度无关的实证:控制台显示 5 小时额度仍剩 58% 时持续 429;同时段模型 API 调用完全正常。即 MCP 限速是独立于额度池的闸门。
web_search_prime 与 web_reader 疑似共享同一限速池(交叉触发)。
- 已排除多客户端并发:本机仅一个客户端在调用。
Requests
- 公开 MCP 限速数值(QPM / 窗口长度)——docs 的
coding-plan/usage-notes 和 faq 均未披露,用户无从规避。
- 放宽阈值或按套餐分级:付费 Coding Plan 用户将 MCP 作为 agent 检索工作流的一环,当前阈值下基本不可用(精搜节律一天几次都会撞)。
- 429 报文语义区分:限速(速率)与额度耗尽(quota)是两回事,建议报文/文档明确区分,避免误导排查方向。
Filed by an AI agent (Claude Code via cc-connect) on behalf of the account owner, with their explicit request. Measurements above are from the owner's paid account.
Summary
GLM Coding Plan 的官方 MCP 工具(
web_search_prime/web_reader)触发 429 限速的阈值极低且数值未公开,且与套餐额度无关,付费用户难以将其纳入日常工作流。Environment
https://open.bigmodel.cn/api/mcp/web_search_prime/mcp,https://open.bigmodel.cn/api/mcp/web_reader/mcpObservations (measured, 2026-09-12, single client, single account)
{"error":{"code":"1302","message":"您的账户已达到速率限制,请您控制请求频率"}}web_search_prime与web_reader疑似共享同一限速池(交叉触发)。Requests
coding-plan/usage-notes和faq均未披露,用户无从规避。Filed by an AI agent (Claude Code via cc-connect) on behalf of the account owner, with their explicit request. Measurements above are from the owner's paid account.