feat: add provider-native hosted tool support#1430
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joshua-mo-143 merged 4 commits into0xPlaygrounds:mainfrom Mar 13, 2026
Merged
feat: add provider-native hosted tool support#1430joshua-mo-143 merged 4 commits into0xPlaygrounds:mainfrom
joshua-mo-143 merged 4 commits into0xPlaygrounds:mainfrom
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joshua-mo-143
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Mar 4, 2026
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looks mostly good. please see comment
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Manually resolving/merging this in now as I think this'll be useful but don't want to abandon the original PR 🙂 |
…r-native-hosted-tools Made-with: Cursor # Conflicts: # rig/rig-core/src/providers/gemini/completion.rs
joshua-mo-143
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Mar 11, 2026
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Definitely would like to see this - web_search in particular is pretty important for a well-rounded client capable of research. |
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Relates #1053
Summary
This PR adds provider-native hosted tool support to Rig’s completion request flow, with first-class support in OpenAI Responses API and compatible forwarding in other providers.
The issue was that hosted tools (for example
web_search,file_search,computer_use) could not be expressed through existing function-only tool plumbing inresponses_api.Scope
This PR is intentionally focused on one facet: tool definition/request serialization for hosted/provider-native tools in completion flows.
It does not change agent loop behavior, tool execution semantics, or unrelated provider APIs.
It is also not complete due to me being new to the projects source code but I hope it will help to accelerate adding this feature.
Implementation
1) Provider-agnostic request surface (
completion/request.rs)ProviderToolDefinition:type/kind fieldCompletionRequest::with_provider_tool(...)CompletionRequest::with_provider_tools(...)CompletionRequestBuilder::provider_tool(...)CompletionRequestBuilder::provider_tools(...)additional_params.tools.2) OpenAI Responses API hosted tools (
providers/openai/responses_api/mod.rs)ResponsesToolDefinitionto represent both:web_search,file_search,computer_use, plus generic hosted type)ResponsesToolDefinition::function(...)ResponsesToolDefinition::hosted(...)ResponsesToolDefinition::web_search()ResponsesToolDefinition::file_search()ResponsesToolDefinition::computer_use()req.toolsadditional_params.toolsCompletionRequest::with_tool(s)ResponsesCompletionModel::with_tool(s)3) Provider forwarding support (same abstraction path)
xai,gemini,anthropic(completion + streaming): now extractadditional_params.toolsand merge with function tools.groq: maps provider-native tools into Groq’s