Skip to content

Support Anthropic-compatible base URL override #336

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
octo-patch wants to merge 2 commits into from
Closed

Support Anthropic-compatible base URL override #336

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
2c07885
feat: support Anthropic-compatible base URL override
octo-patch Jul 9, 2026
5a33fa7
fix: correct MiniMax Anthropic base URL
octo-patch Jul 12, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -681,6 +681,9 @@ PROJECT_TYPE="typescript"
CLAUDE_CODE_CMD="claude"
# CLAUDE_CODE_CMD="npx @anthropic-ai/claude-code" # Alternative: use npx

# Optional Anthropic-compatible API base URL override
# CLAUDE_ANTHROPIC_BASE_URL="https://api.minimax.io/anthropic"

# Shell init file — source before running claude (useful for zsh/fish users
# whose PATH or env vars are only set in their shell's init file)
#RALPH_SHELL_INIT_FILE="~/.zshrc"
Expand Down
8 changes: 8 additions & 0 deletions ralph_loop.sh
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,7 @@ _env_CLAUDE_CODE_CMD="${CLAUDE_CODE_CMD:-}"
_env_CLAUDE_AUTO_UPDATE="${CLAUDE_AUTO_UPDATE:-}"
_env_CLAUDE_MODEL="${CLAUDE_MODEL:-}"
_env_CLAUDE_EFFORT="${CLAUDE_EFFORT:-}"
_env_CLAUDE_ANTHROPIC_BASE_URL="${CLAUDE_ANTHROPIC_BASE_URL:-}"
_env_RALPH_SHELL_INIT_FILE="${RALPH_SHELL_INIT_FILE:-}"
_env_ENABLE_NOTIFICATIONS="${ENABLE_NOTIFICATIONS:-}"
_env_ENABLE_BACKUP="${ENABLE_BACKUP:-}"
Expand Down Expand Up @@ -113,6 +114,7 @@ CLAUDE_AUTO_UPDATE="${CLAUDE_AUTO_UPDATE:-true}" # Auto-update Claude CLI at st
CLAUDE_CODE_CMD="${CLAUDE_CODE_CMD:-claude}" # Claude Code CLI command (default: global install)
CLAUDE_MODEL="${CLAUDE_MODEL:-}" # Model override (e.g. claude-sonnet-4-6); empty = CLI default
CLAUDE_EFFORT="${CLAUDE_EFFORT:-}" # Effort level override (e.g. high, low); empty = CLI default
CLAUDE_ANTHROPIC_BASE_URL="${CLAUDE_ANTHROPIC_BASE_URL:-}" # Anthropic-compatible API base URL override; empty = CLI default
RALPH_SHELL_INIT_FILE="${RALPH_SHELL_INIT_FILE:-}" # Shell init file to source before running claude (e.g. ~/.zshrc)
DRY_RUN="${DRY_RUN:-false}" # Simulate loop without making actual Claude API calls
ENABLE_NOTIFICATIONS="${ENABLE_NOTIFICATIONS:-false}" # Enable desktop notifications; set true or use --notify flag
Expand Down Expand Up @@ -328,6 +330,7 @@ load_ralphrc() {
[[ -n "$_env_CLAUDE_AUTO_UPDATE" ]] && CLAUDE_AUTO_UPDATE="$_env_CLAUDE_AUTO_UPDATE"
[[ -n "$_env_CLAUDE_MODEL" ]] && CLAUDE_MODEL="$_env_CLAUDE_MODEL"
[[ -n "$_env_CLAUDE_EFFORT" ]] && CLAUDE_EFFORT="$_env_CLAUDE_EFFORT"
[[ -n "$_env_CLAUDE_ANTHROPIC_BASE_URL" ]] && CLAUDE_ANTHROPIC_BASE_URL="$_env_CLAUDE_ANTHROPIC_BASE_URL"
[[ -n "$_env_RALPH_SHELL_INIT_FILE" ]] && RALPH_SHELL_INIT_FILE="$_env_RALPH_SHELL_INIT_FILE"
[[ -n "$_env_ENABLE_NOTIFICATIONS" ]] && ENABLE_NOTIFICATIONS="$_env_ENABLE_NOTIFICATIONS"
[[ -n "$_env_ENABLE_BACKUP" ]] && ENABLE_BACKUP="$_env_ENABLE_BACKUP"
Expand Down Expand Up @@ -1559,6 +1562,11 @@ build_claude_command() {
CLAUDE_CMD_ARGS+=("--effort" "$CLAUDE_EFFORT")
fi

# Add Anthropic-compatible API base URL override (for custom providers)
if [[ -n "${CLAUDE_ANTHROPIC_BASE_URL:-}" ]]; then
CLAUDE_CMD_ARGS+=("--anthropic-base-url" "$CLAUDE_ANTHROPIC_BASE_URL")
fi

Comment on lines +1565 to +1569

@coderabbitai coderabbitai Bot Jul 9, 2026

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

🎯 Functional Correctness | 🟠 Major | ⚡ Quick win

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
# Check if the Claude CLI supports --anthropic-base-url
claude --help 2>&1 | grep -i "base-url\|anthropic" || echo "Flag not found in --help output"

Repository: frankbria/ralph-claude-code

Length of output: 197

🏁 Script executed:

#!/bin/bash
set -euo pipefail

# Inspect the relevant code path and any references to the env var/flag name.
rg -n "CLAUDE_ANTHROPIC_BASE_URL|anthropic-base-url|api-base-url|base-url" .

# Check the local Claude CLI help more directly for base-url-related options.
claude --help 2>&1 | sed -n '1,220p'

Repository: frankbria/ralph-claude-code

Length of output: 3100

🌐 Web query:

Claude Code CLI --anthropic-base-url option supported flag base url documentation

💡 Result:

Claude Code CLI does not provide a command-line flag named --anthropic-base-url [1][2]. Instead, custom API endpoints are configured exclusively via the ANTHROPIC_BASE_URL environment variable [3][4][5]. You can set this variable in your shell for a single session, as a persistent environment variable, or within the Claude Code settings file [4][5][6]. Configuration Methods: 1. Shell Environment (Temporary): export ANTHROPIC_BASE_URL=https://your-gateway.example.com export ANTHROPIC_AUTH_TOKEN=your-gateway-key 2. Settings File (Persistent): You can define the variable in your ~/.claude/settings.json file using an env block: { "env": { "ANTHROPIC_BASE_URL": "https://your-gateway.example.com", "ANTHROPIC_AUTH_TOKEN": "your-gateway-key" } } Key Details: - Purpose: ANTHROPIC_BASE_URL is used to point the CLI toward LLM gateways, corporate proxies, or local mock servers [4][5][6]. - Authentication: When using a custom base URL, you typically use ANTHROPIC_AUTH_TOKEN to provide the necessary authorization credentials instead of the standard ANTHROPIC_API_KEY [4][7]. - Priority: If both a shell export and a settings-file entry are present, the settings-file value generally takes precedence [4]. You can verify which URL is being used by running the /status command within the Claude Code CLI [4].

Citations:

Use ANTHROPIC_BASE_URL instead of --anthropic-base-url

Claude CLI doesn’t expose a --anthropic-base-url flag; custom endpoints need to be passed via ANTHROPIC_BASE_URL in the process environment (or settings file), otherwise custom-provider runs will fail at startup.

🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@ralph_loop.sh` around lines 1565 - 1569, The Claude CLI base URL override is
being passed as an unsupported command-line flag, so update the custom-provider
handling in the shell logic around the CLAUDE_CMD_ARGS construction to use the
ANTHROPIC_BASE_URL process environment variable instead. Keep the existing
CLAUDE_ANTHROPIC_BASE_URL input, but export/map it into the environment before
launching Claude rather than appending "--anthropic-base-url" to the argv array,
so startup works with custom endpoints.

# Add output format flag
if [[ "$CLAUDE_OUTPUT_FORMAT" == "json" ]]; then
CLAUDE_CMD_ARGS+=("--output-format" "json")
Expand Down
4 changes: 4 additions & 0 deletions templates/ralphrc.template
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,10 @@ CLAUDE_AUTO_UPDATE=true
# Minimum Claude CLI version required
CLAUDE_MIN_VERSION="2.0.76"

# Optional Anthropic-compatible API base URL override for custom providers
# Example: MiniMax Claude-compatible endpoint
# CLAUDE_ANTHROPIC_BASE_URL="https://api.minimax.io/anthropic"

# Enable verbose logging
RALPH_VERBOSE=false

Expand Down
45 changes: 44 additions & 1 deletion tests/unit/test_cli_modern.bats
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -192,6 +192,7 @@ setup() {
_env_CLAUDE_CODE_CMD="${CLAUDE_CODE_CMD:-}"
_env_CLAUDE_MODEL="${CLAUDE_MODEL:-}"
_env_CLAUDE_EFFORT="${CLAUDE_EFFORT:-}"
_env_CLAUDE_ANTHROPIC_BASE_URL="${CLAUDE_ANTHROPIC_BASE_URL:-}"
_env_RALPH_SHELL_INIT_FILE="${RALPH_SHELL_INIT_FILE:-}"

load_ralphrc() {
Expand All @@ -202,6 +203,7 @@ setup() {
[[ -n "$_env_CLAUDE_CODE_CMD" ]] && CLAUDE_CODE_CMD="$_env_CLAUDE_CODE_CMD"
[[ -n "$_env_CLAUDE_MODEL" ]] && CLAUDE_MODEL="$_env_CLAUDE_MODEL"
[[ -n "$_env_CLAUDE_EFFORT" ]] && CLAUDE_EFFORT="$_env_CLAUDE_EFFORT"
[[ -n "$_env_CLAUDE_ANTHROPIC_BASE_URL" ]] && CLAUDE_ANTHROPIC_BASE_URL="$_env_CLAUDE_ANTHROPIC_BASE_URL"
[[ -n "$_env_RALPH_SHELL_INIT_FILE" ]] && RALPH_SHELL_INIT_FILE="$_env_RALPH_SHELL_INIT_FILE"
RALPHRC_LOADED=true
return 0
Expand Down Expand Up @@ -548,6 +550,11 @@ build_claude_command() {
CLAUDE_CMD_ARGS+=("--effort" "$CLAUDE_EFFORT")
fi

# Add Anthropic-compatible API base URL override
if [[ -n "${CLAUDE_ANTHROPIC_BASE_URL:-}" ]]; then
CLAUDE_CMD_ARGS+=("--anthropic-base-url" "$CLAUDE_ANTHROPIC_BASE_URL")
fi

# Add output format flag
if [[ "$CLAUDE_OUTPUT_FORMAT" == "json" ]]; then
CLAUDE_CMD_ARGS+=("--output-format" "json")
Expand Down Expand Up @@ -1937,6 +1944,17 @@ EOF
assert_equal "$CLAUDE_EFFORT" "high"
}

@test "CLAUDE_ANTHROPIC_BASE_URL from .ralphrc is loaded correctly" {
cat > "$TEST_DIR/.ralphrc" << 'EOF'
CLAUDE_ANTHROPIC_BASE_URL="https://api.minimax.io/anthropic"
EOF
_env_CLAUDE_ANTHROPIC_BASE_URL=""
CLAUDE_ANTHROPIC_BASE_URL=""

load_ralphrc
assert_equal "$CLAUDE_ANTHROPIC_BASE_URL" "https://api.minimax.io/anthropic"
}

@test "CLAUDE_MODEL env var takes precedence over .ralphrc" {
cat > "$TEST_DIR/.ralphrc" << 'EOF'
CLAUDE_MODEL="claude-sonnet-4-6"
Expand All @@ -1959,6 +1977,17 @@ EOF
assert_equal "$CLAUDE_EFFORT" "high"
}

@test "CLAUDE_ANTHROPIC_BASE_URL env var takes precedence over .ralphrc" {
cat > "$TEST_DIR/.ralphrc" << 'EOF'
CLAUDE_ANTHROPIC_BASE_URL="https://api.example.com/anthropic"
EOF
_env_CLAUDE_ANTHROPIC_BASE_URL="https://api.minimax.io/anthropic"
CLAUDE_ANTHROPIC_BASE_URL="https://api.minimax.io/anthropic"

load_ralphrc
assert_equal "$CLAUDE_ANTHROPIC_BASE_URL" "https://api.minimax.io/anthropic"
}

@test "build_claude_command includes --model flag when CLAUDE_MODEL is set" {
CLAUDE_MODEL="claude-sonnet-4-6"
CLAUDE_EFFORT=""
Expand All @@ -1981,15 +2010,29 @@ EOF
[[ "${CLAUDE_CMD_ARGS[*]}" == *"high"* ]]
}

@test "build_claude_command omits --model and --effort when not configured" {
@test "build_claude_command includes --anthropic-base-url flag when CLAUDE_ANTHROPIC_BASE_URL is set" {
CLAUDE_MODEL=""
CLAUDE_EFFORT=""
CLAUDE_ANTHROPIC_BASE_URL="https://api.minimax.io/anthropic"
echo "test prompt" > "$TEST_DIR/PROMPT.md"

build_claude_command "$TEST_DIR/PROMPT.md" "" ""

[[ "${CLAUDE_CMD_ARGS[*]}" == *"--anthropic-base-url"* ]]
[[ "${CLAUDE_CMD_ARGS[*]}" == *"https://api.minimax.io/anthropic"* ]]
}

@test "build_claude_command omits --model, --effort, and --anthropic-base-url when not configured" {
CLAUDE_MODEL=""
CLAUDE_EFFORT=""
CLAUDE_ANTHROPIC_BASE_URL=""
echo "test prompt" > "$TEST_DIR/PROMPT.md"

build_claude_command "$TEST_DIR/PROMPT.md" "" ""

[[ "${CLAUDE_CMD_ARGS[*]}" != *"--model"* ]]
[[ "${CLAUDE_CMD_ARGS[*]}" != *"--effort"* ]]
[[ "${CLAUDE_CMD_ARGS[*]}" != *"--anthropic-base-url"* ]]
}

# ==============================================================================
Expand Down