Make avante work again after claude blocked max subscription to be used in the 3rd party tool like avante or opencode #2920
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Prefixes tool names with av_ for OAuth requests to bypass
Anthropic's tool name validation
2. Updated transform_tool function - Added use_prefix parameter to
conditionally prefix tool names
3. Added user-agent header - Set to claude-cli/2.1.2 (external, cli)
for OAuth requests
4. Fixed beta headers - Removed fine-grained-tool-streaming-2025-05-14
which causes 400 errors
5. Added ?beta=true to URL - Required for OAuth requests
6. Always show OAuth URL - For terminal environments without browsers,
URL is always displayed and copied to clipboard
7. Prefix tool names in parse_messages - Added prefix to tool_use
items when auth_type == "max"
8. Strip tool prefix in parse_response - Removes the av_ prefix from
tool names in responses
9. Pass use_prefix to transform_tool call - Enables tool name
prefixing for OAuth
The changes are ready for you to commit and submit as a PR to the
upstream yetone/avante.nvim repository.
The Claude provider's transform_tool function accepts an optional use_prefix parameter for OAuth tool name prefixing, but the type definition in types.lua only allowed 2 parameters, causing redundant-parameter warnings. Co-Authored-By: Claude Opus 4.5 <[email protected]>
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Anthropic's tool name validation
Also instead of using browser to open claude auth link, i asked avante to display the auth link in the message log, so that people can copy and paste to browser if they are in a terminal env instead of GUI, like you ssh to a remote machine and want to neovim there.
in lua/avante/config.lua, just add auth_type = 'max' to make it work like below:
Up to you guys if you want to use, but I won't be responsible for any punishment from Anthropic.