opencode-anthropic-websearch

An OpenCode plugin for Anthropic web search with citations.

Features

- Uses Anthropic's native web_search_20250305 tool
- Supports both API key and OAuth authentication
- Automatically refreshes OAuth tokens when expired
- Formats responses with numbered citations and sources

Installation

``bash
bun install opencode-anthropic-websearch
`

Or for local development:

`bash
git clone
cd opencode-anthropic-websearch
bun install
bun run build
`

Configuration

Add the plugin to your ~/.config/opencode/opencode.json:

`json
{
"plugins": [
"file:///path/to/opencode-anthropic-websearch"
]
}
`

Usage

Once configured, the anthropic_web_search tool is automatically available to the LLM. It will be used when Claude needs to search the web for current information.

$3

The LLM can call the tool with a query:

`
anthropic_web_search({ query: "latest news about AI developments" })
`

The response includes the search results with numbered citations:

`
According to recent reports, AI developments have accelerated... [1][2]

---
Sources:
[1] Article Title: https://example.com/article1
[2] Another Article: https://example.com/article2
`

Authentication

The plugin supports two authentication methods:

1. API Key: Use your Anthropic API key
2. OAuth: Use Claude Pro/Max subscription via OAuth (automatically refreshes tokens)

Authenticate via opencode auth login and select your preferred method.

Development

`bash


Install dependencies

bun install

Type check

bun run typecheck

Build

bun run build
``

License

MIT