Use AnyAPI in Claude Code

Claude Code is Anthropic’s official terminal-native AI coding agent. It lets you delegate complex coding tasks — file edits, multi-step refactors, test generation, and more — directly from your terminal.

AnyAPI works with Claude Code via the Anthropic Messages API (/v1/messages). No local proxy required.

Quick Start

1. Get your API key

2. Install Claude Code

macOS / Linux / WSL:

curl -fsSL https://claude.ai/install.sh | bash

Windows PowerShell:

irm https://claude.ai/install.ps1 | iex

3. Configure environment variables

Add these lines to your shell profile (~/.zshrc or ~/.bashrc):

export ANTHROPIC_BASE_URL="https://api.anyapi.ai"
export ANTHROPIC_AUTH_TOKEN="your-anyapi-key-here"
export ANTHROPIC_API_KEY=""   # Must be explicitly empty
export ANTHROPIC_MODEL="anthropic/claude-sonnet-4.6"

Then reload your shell:

source ~/.zshrc  # or source ~/.bashrc

Important: ANTHROPIC_API_KEY must be set to an empty string "", not just unset. If it has any value, Claude Code will try to authenticate with Anthropic directly instead of using AnyAPI.

Note: Do not put these in a project-level .env file — Claude Code does not read standard .env files.

If you previously logged in to Claude Code with an Anthropic account, run this inside Claude Code:

/logout

Then quit and relaunch claude.

5. Start Claude Code

cd /path/to/your/project
claude

6. Verify

Run /status inside Claude Code:

/status
Auth token: ANTHROPIC_AUTH_TOKEN
Anthropic base URL: https://api.anyapi.ai

Model Format

AnyAPI uses the vendor/model format. Always include the vendor prefix:

export ANTHROPIC_MODEL="anthropic/claude-sonnet-4.6"   # correct
# export ANTHROPIC_MODEL="claude-sonnet-4.6"           # may not resolve

Browse available models at anyapi.ai/ai-models or query the API:

curl -sS -H "Authorization: Bearer $ANTHROPIC_AUTH_TOKEN" \
  https://api.anyapi.ai/v1/models | jq -r '.data[].id'

Configuration Examples

DeepSeek:

export ANTHROPIC_BASE_URL="https://api.anyapi.ai"
export ANTHROPIC_AUTH_TOKEN="your-key"
export ANTHROPIC_API_KEY=""
export ANTHROPIC_MODEL="deepseek/deepseek-v4-flash"

Kimi K2:

export ANTHROPIC_BASE_URL="https://api.anyapi.ai"
export ANTHROPIC_AUTH_TOKEN="your-key"
export ANTHROPIC_API_KEY=""
export ANTHROPIC_MODEL="moonshotai/kimi-k2.6"

Claude Sonnet (via Anthropic on AnyAPI):

export ANTHROPIC_BASE_URL="https://api.anyapi.ai"
export ANTHROPIC_AUTH_TOKEN="your-key"
export ANTHROPIC_API_KEY=""
export ANTHROPIC_MODEL="anthropic/claude-sonnet-4.6"

Troubleshooting

`403 RBAC: access denied`

Your key doesn’t have access to the requested model, or the model name is wrong.

Check your balance and plan at dash.anyapi.ai
Verify the model name using the /v1/models endpoint above
Make sure you’re using vendor/model format

Claude Code is ignoring your environment variables.

Make sure ANTHROPIC_API_KEY="" is explicitly set to empty string
Run /logout inside Claude Code, then restart
Confirm variables are in your shell profile, not a .env file

Auth conflict warnings / unexpected model-not-found errors

Usually caused by a cached Anthropic OAuth session conflicting with ANTHROPIC_AUTH_TOKEN.

Run /logout inside Claude Code
Quit and relaunch claude
Verify with /status that the base URL shows https://api.anyapi.ai

ANTHROPIC_API_KEY is either unset or has a real value. Set it to an empty string:

export ANTHROPIC_API_KEY=""

Support

AnyAPI Dashboard: dash.anyapi.ai
AnyAPI Discord: Discord community
AnyAPI Email: support@anyapi.ai
Claude Code Docs: docs.anthropic.com/en/docs/claude-code

Next Steps

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Claude Code Integration

Use AnyAPI in Claude Code

Quick Start

1. Get your API key

2. Install Claude Code

3. Configure environment variables

5. Start Claude Code

6. Verify

Model Format

Configuration Examples

Troubleshooting

`403 RBAC: access denied`

Auth conflict warnings / unexpected model-not-found errors

Support

Next Steps

All Integrations

Model Catalog

​Use AnyAPI in Claude Code

​Quick Start

​1. Get your API key

​2. Install Claude Code

​3. Configure environment variables

​4. Clear any cached Anthropic login

​5. Start Claude Code

​6. Verify

​Model Format

​Configuration Examples

​Troubleshooting

​403 RBAC: access denied

​Please run /login on startup

​Auth conflict warnings / unexpected model-not-found errors

​Browser opens for login unexpectedly

​Support

​Next Steps

All Integrations

Model Catalog

Use AnyAPI in Claude Code

Quick Start

1. Get your API key

2. Install Claude Code

3. Configure environment variables

4. Clear any cached Anthropic login

5. Start Claude Code

6. Verify

Model Format

Configuration Examples

Troubleshooting

`403 RBAC: access denied`

`Please run /login` on startup

Auth conflict warnings / unexpected model-not-found errors

Browser opens for login unexpectedly

Support

Next Steps