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The following comment was made by an LLM, it may be inaccurate: Based on my search, the related PRs I found are existing websearch feature/documentation PRs from earlier in the codebase, but none appear to be duplicates of the current refactor PR #29752. The current PR is a comprehensive architectural refactor to support arbitrary MCP-backed providers via configuration, which is distinct from:
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G4brym
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May 28, 2026 14:51
1 task done
Replace the hardcoded exa/parallel split with a generic provider registry.
Users can register any MCP-backed websearch provider via a new
`websearch.providers` map in opencode.json; the built-ins (exa, parallel)
ship pre-registered using the same shape and remain disabled by default.
- New `ConfigWebSearch` schema: `{ default?, providers: Record<id, { enabled?,
label?, url?, tool?, headers?, args?, weight? }> }`. Headers and args support
`{env:NAME}` and `{query}` / `{numResults}` / etc. placeholders.
- `selectWebSearchProvider` now picks from N resolved providers using a
checksum-weighted deterministic split, generalizing the prior 50/50 routing.
- `mcp-websearch.ts` is trimmed to a generic `call({ url, tool, args, headers,
timeout })` transport; per-provider URLs/arg shapes live in the descriptors.
- `webSearchEnabled` takes a boolean (any provider resolved) instead of two
per-provider flags.
Backcompat preserved: `OPENCODE_ENABLE_EXA`, `OPENCODE_EXPERIMENTAL_EXA`,
`OPENCODE_EXPERIMENTAL`, `OPENCODE_ENABLE_PARALLEL`,
`OPENCODE_EXPERIMENTAL_PARALLEL`, `OPENCODE_WEBSEARCH_PROVIDER`,
`EXA_API_KEY`, and `PARALLEL_API_KEY` continue to work unchanged.
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Issue for this PR
Closes #
Type of change
What does this PR do?
The websearch tool currently hardcodes
exaandparallelas the only providers. Adding another MCP-backed websearch provider means editing the provider schema literal, theif/elsedispatch branch, and the selection logic, plus introducing new env flags.This refactor moves that knowledge out of code and into config. There is now a
websearch.providersmap inopencode.jsonwhere any MCP-backed websearch provider can be registered with{ url, tool, args, headers }. The two built-ins are pre-registered using the same shape and remain disabled by default (same as today). Selection generalises the current 50/50 checksum split to N providers with optional weights.The tool's normalised parameters schema is unchanged, so the model sees the exact same interface.
Backcompat:
OPENCODE_ENABLE_EXA,OPENCODE_EXPERIMENTAL_EXA,OPENCODE_EXPERIMENTAL,OPENCODE_ENABLE_PARALLEL,OPENCODE_EXPERIMENTAL_PARALLEL,OPENCODE_WEBSEARCH_PROVIDER,EXA_API_KEY, andPARALLEL_API_KEYall keep working with no change in behaviour.How did you verify your code works?
bun typecheckinpackages/opencode: cleanbun tsc --noEmitinpackages/sdk/js: cleanbun test test/tool/websearch.test.ts test/tool/parameters.test.ts test/effect/runtime-flags.test.ts: 113/113 passScreenshots / recordings
N/A — no UI changes.
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