Tool Web

The model-facing web tool suite — `web_search` and `web_fetch` — over the [web capability seam](../web/README.md) (`ctx.web`). It owns model-facing concerns only: tool names, JSON schemas, snake_case argument names, prompt sections, the result-count bound, result formatting, HTML→markdown presentation, and the UI presentation projection — `presentCall`, `presentResult` (a `card: 'web'` result card discriminated by `kind: 'search' | 'fetch'`), and the `output.presentationMeta` that carries the structured search sources or the fetch summary the lossy render text cannot (see the [web-result-card Agent Note](../../../.agents/notes/implemented/feature/2026-07-30-web-result-card.md)). All web access goes through `ctx.web`; this package never imports a concrete provider. Neither tool exposes a model-facing timeout — each tool's cooperative tool-call budget is declared here via config (`fetchTimeoutMs`/`searchTimeoutMs`, attached as `ToolDefinition.timeoutMs`) and enforced by [`@deepseek-ai/dsh-tool-call-timeout-policy`](../../guard/timeout-policy/README.md) (a `tools/execute` wrapper). Single operations forward `exec.signal`; a multi-query search fuses it with batch cancellation so a failed query aborts its siblings.

• 适用 Agent：DeepSeek Harness
• 适配模型：DeepSeek

@deepseek-ai/dsh-tool-web

暂无通过审核、可复现的同任务 A/B 运行证据；本档案仅证明来源可信，不代表实测有效。