opencode-crs-bedrock

OpenCode plugin for FeedMob CRS (Claude Relay Service) proxy to AWS Bedrock Anthropic models.

Features

- URL Rewriting - Routes requests to the CRS endpoint
- API Key Auth - Uses x-api-key header for authentication

Installation

``bash
npm install -g opencode-crs-bedrock
`

Or add to your OpenCode config to auto-install:

`json
{
"plugin": ["opencode-crs-bedrock@latest"]
}
`

Quick Start

$3

Create or edit opencode.json in your project root or ~/.config/opencode/opencode.json:

`json
{
"$schema": "https://opencode.ai/config.json",
"plugin": [
"opencode-crs-bedrock@latest"
],
"provider": {
"crs": {
"npm": "@ai-sdk/anthropic",
"models": {
"claude-opus-4-5": {
"name": "Opus 4.5 [CRS]",
"limit": { "context": 200000, "output": 64000 },
"modalities": { "input": ["text", "image", "pdf"], "output": ["text"] },
"variants": {
"low": { "thinkingConfig": { "thinkingBudget": 8192 } },
"max": { "thinkingConfig": { "thinkingBudget": 32768 } }
}
},
"claude-sonnet-4-5": {
"name": "Sonnet 4.5 [CRS]",
"modalities": { "input": ["text", "image", "pdf"], "output": ["text"] },
"variants": {
"low": { "thinkingConfig": { "thinkingBudget": 8192 } },
"max": { "thinkingConfig": { "thinkingBudget": 32768 } }
}
}
}
}
}
}
`

$3

Run the OpenCode auth login command:

`bash
opencode auth login
`

When prompted:
1. Select Other provider
2. Enter provider id: crs
3. Enter your CRS API key (starts with cr_)

Your credentials will be securely stored and the plugin will automatically configure the custom fetch handler for CRS authentication.

Usage

`bash


Interactive mode

opencode

Or direct run with a specific model

opencode run -m crs/claude-sonnet-4-5 "Hello, world!"

Use with thinking budget variants

opencode run -m crs/claude-opus-4-5:low "Simple task" # 8K thinking tokens
opencode run -m crs/claude-opus-4-5:max "Complex task" # 32K thinking tokens
`

Model Configuration

$3

- Opus 4.5: 200K context, 64K output tokens
- Sonnet 4.5: Default limits (inherited from SDK)

$3

Both models support extended thinking with configurable budgets via variants:

- :low - 8,192 thinking tokens for simpler tasks
- :max - 32,768 thinking tokens for complex reasoning

Use variants by appending :variant to the model ID (e.g., crs/claude-opus-4-5:max).

$3

All models support:
- Input: text, images, PDF documents
- Output: text

Debugging

Enable debug logging to see request details:

`bash
CRS_DEBUG=true opencode
`

Troubleshooting

$3

Check stored credentials:
`bash
opencode auth list
`

If your CRS credentials aren't listed, run the authentication step again:
`bash
opencode auth login
`

Make sure to:
- Select Other provider
- Enter provider id: crs
- Enter your CRS API key (starts with cr_)

$3

1. Verify your credentials are stored:
`bash
opencode auth list
`

2. Check your opencode.json has the correct provider configuration (see Quick Start above)

3. Enable debug logging to see request details:
`bash
CRS_DEBUG=true opencode run -m crs/claude-sonnet-4-5 "test"
`

Local Development

For contributors working on the plugin itself:

`json
{
"plugin": [
"file:///path/to/opencode-crs-bedrock"
]
}
``

Reference the local directory in your OpenCode config for live development.

License

MIT