Use AnyAPI in Claude Code

Claude Code is Anthropic’s terminal-native AI coding agent — it edits files, runs commands, and handles multi-step refactors from your terminal. Claude Code speaks the Anthropic Messages API, and AnyAPI serves that API at https://api.anyapi.ai, so you can point it at AnyAPI with no local proxy.

Install Claude Code

macOS / Linux / WSL:

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

Windows PowerShell:

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

Get Your API Key

Go to API Keys in the AnyAPI Dashboard and create a new key.

Configure Claude Code

Run this in your terminal to write the AnyAPI settings into ~/.claude/settings.json. Replace sk-your-anyapi-key with your own key.

mkdir -p ~/.claude
cat << 'EOF' > ~/.claude/settings.json
{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.anyapi.ai",
    "ANTHROPIC_API_KEY": "sk-your-anyapi-key",
    "ANTHROPIC_AUTH_TOKEN": "sk-your-anyapi-key",
    "ANTHROPIC_MODEL": "anthropic/claude-sonnet-4.6",
    "CLAUDE_CODE_SKIP_FAST_MODE_ORG_CHECK": "1",
    "CLAUDE_CODE_DISABLE_ADAPTIVE_THINKING": "1"
  }
}
EOF

Variable	Value
`ANTHROPIC_BASE_URL`	`https://api.anyapi.ai`
`ANTHROPIC_API_KEY`	Your AnyAPI key
`ANTHROPIC_AUTH_TOKEN`	Your AnyAPI key (same value)
`ANTHROPIC_MODEL`	e.g. `anthropic/claude-sonnet-4.6`
`CLAUDE_CODE_SKIP_FAST_MODE_ORG_CHECK`	`1` — skips the org check that expects a first-party Anthropic account
`CLAUDE_CODE_DISABLE_ADAPTIVE_THINKING`	`1` — keeps thinking settings fixed instead of negotiated with Anthropic

~/.claude/settings.json stores your key in plain text. The command above overwrites the file — if you already have settings there, add the env block by hand instead.

Start Claude Code

cd /path/to/your/project
claude

Check the connection inside Claude Code:

/status

The base URL should read https://api.anyapi.ai.

Recommended Models

Model	Best for
`anthropic/claude-sonnet-4.6`	Fast edits, everyday coding
`anthropic/claude-opus-4.6`	Complex architecture, deep reasoning
`moonshotai/kimi-k2.6`	Long agentic sessions
`deepseek/deepseek-r1`	Algorithms, math

AnyAPI uses provider/model format for model IDs. Bare names like claude-sonnet-4.6 without the vendor prefix won’t work.

Browse all models at anyapi.ai/ai-models, or list them from the API:

curl -sS -H "Authorization: Bearer sk-your-anyapi-key" \
  https://api.anyapi.ai/v1/models

Troubleshooting

Claude Code asks you to log in

A cached Anthropic session takes priority over your settings. Run /logout inside Claude Code, quit, and relaunch claude.

403 access denied

Your key has no access to that model, or the model ID is wrong. Check your balance and plan at dash.anyapi.ai, and verify the ID against /v1/models.

Settings seem to be ignored

Claude Code reads ~/.claude/settings.json, not a project .env file. Confirm the file is valid JSON — a trailing comma silently breaks it.

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Claude Code

Use AnyAPI in Claude Code

Install Claude Code

Get Your API Key

Configure Claude Code

Start Claude Code

Recommended Models

Troubleshooting

Next Steps

CC Switch

All Integrations

​Use AnyAPI in Claude Code

​Install Claude Code

​Get Your API Key

​Configure Claude Code

​Start Claude Code

​Recommended Models

​Troubleshooting

​Next Steps

CC Switch

All Integrations

Use AnyAPI in Claude Code

Install Claude Code

Get Your API Key

Configure Claude Code

Start Claude Code

Recommended Models

Troubleshooting

Next Steps