# Conflicts: # docs/cookbook/adding-a-tool.i18n.yaml # examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl # examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/stdout.expected.jsonl # packages/bash/tool-bash/src/index.ts # packages/core/agent-loop/README.md # packages/core/tools/README.md # packages/core/tools/tests/scoped.spec.ts # packages/fs/tool-fs-search/tests/tools.spec.ts # website/zh-CN/api/harness/events.md # website/zh-CN/api/harness/tools.md
web/ - web capability family
The web access capability seam: an abstract web interface, search/fetch provider implementations, and the model-facing web tools. All product packages.
| Package | Role | ctx key |
|---|---|---|
web/ |
Abstract web seam (search/fetch provider registries + selection + vocabulary + WebError) |
ctx.web |
web-search-exa/ |
Exa-backed WebSearchProvider |
(registers on ctx.web) |
web-search-perplexity/ |
Perplexity-backed WebSearchProvider |
(registers on ctx.web) |
web-search-deepseek/ |
DeepSeek-backed WebSearchProvider using native web_search through the Anthropic-compatible API |
(registers on ctx.web) |
web-fetch-local/ |
Anonymous public HTTP(S) WebFetchProvider |
(registers on ctx.web) |
tool-web/ |
Model-facing web_search/web_fetch tool schemas |
(registers on ctx.tools) |
The interface lives at web/web/. Unlike bash/fs, the seam spans two capabilities (search and fetch) with potentially multiple providers each: ctx.web is one web-access middle layer with one provider-selection policy, one abort/error vocabulary, and one product-facing "how this harness reaches the web" config surface. Providers register capabilities, not tools; tool-web is the only owner of model-facing names, schemas, prompt guidance, and presentation. A search provider swap does not change how the model asks for a query, and a fetch implementation swap does not change how the model asks for a URL.
See the web capability seam Agent Note for the design rationale, including why search and fetch are deliberately one seam and why web_fetch's SSRF protection is deferred.