97 lines
2.4 KiB
Markdown
97 lines
2.4 KiB
Markdown
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# ✅ FIXED: LiteLLM Integration with LLMX
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## The Root Cause
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The `prompt_cache_key: Extra inputs are not permitted` error was caused by a **hardcoded default provider**.
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**File**: `llmx-rs/core/src/config/mod.rs:983`
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**Problem**: Default provider was set to `"openai"` which uses the Responses API
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**Fix**: Changed default to `"litellm"` which uses the Chat Completions API
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## The Error Chain
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1. No provider specified → defaults to "openai"
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2. OpenAI provider → uses `wire_api: WireApi::Responses`
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3. Responses API → sends `prompt_cache_key` field in requests
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4. LiteLLM Chat Completions API → rejects `prompt_cache_key` → 400 error
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## The Solution
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Changed one line in `llmx-rs/core/src/config/mod.rs`:
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```rust
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// BEFORE:
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.unwrap_or_else(|| "openai".to_string());
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// AFTER:
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.unwrap_or_else(|| "litellm".to_string());
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```
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## Current Status ✅
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- **Binary Built**: `llmx-rs/target/release/llmx` (44MB, built at 16:36)
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- **Default Provider**: LiteLLM (uses Chat Completions API)
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- **Default Model**: `anthropic/claude-sonnet-4-20250514`
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- **Commit**: `e3507a7f`
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## How to Use Now
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### Option 1: Use Environment Variables (Recommended)
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```bash
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export LITELLM_BASE_URL="https://llm.ai.pivoine.art/v1"
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export LITELLM_API_KEY="your-api-key"
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# Just run - no config needed!
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./llmx-rs/target/release/llmx "hello world"
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```
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### Option 2: Use Config File
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Config at `~/.llmx/config.toml` (already created):
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```toml
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model_provider = "litellm" # Optional - this is now the default!
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model = "anthropic/claude-sonnet-4-20250514"
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```
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### Option 3: Override via CLI
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```bash
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./llmx-rs/target/release/llmx -m "openai/gpt-4" "hello"
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```
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## What This Fixes
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✅ No more `prompt_cache_key` errors
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✅ Correct API endpoint (`/v1/chat/completions`)
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✅ Works with LiteLLM proxy out of the box
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✅ No manual provider configuration needed
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✅ Config file is now optional (defaults work)
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## Commits in This Session
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1. **831e6fa6** - Complete comprehensive Llmx → LLMX branding (78 files, 242 changes)
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2. **424090f2** - Add LiteLLM setup documentation
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3. **e3507a7f** - Fix default provider from 'openai' to 'litellm' ⭐
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## Testing
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Try this now:
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```bash
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export LITELLM_BASE_URL="https://llm.ai.pivoine.art/v1"
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export LITELLM_API_KEY="your-key"
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./llmx-rs/target/release/llmx "say hello"
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```
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Should work without any 400 errors!
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## Binary Location
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```
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/home/valknar/Projects/llmx/llmx/llmx-rs/target/release/llmx
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```
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Built: November 11, 2025 at 16:36
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Size: 44MB
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Version: 0.0.0
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