gpu-bridge/mcp-server

30 GPU-powered AI services as MCP tools — LLMs, image generation, audio, video, embeddings, reranking, PDF parsing, NSFW detection & more. x402 native for autonomous AI agents: pay per request on-chain with USDC on Base L2. No API keys. No accounts.

npm version License: MIT MCP Compatible

What is GPU-Bridge?

GPU-Bridge is a unified GPU inference API with native x402 support — the open payment protocol that allows AI agents to autonomously pay for compute with USDC on Base L2. No API keys, no accounts, no human intervention required.

This MCP server exposes all 30 GPU-Bridge services as Model Context Protocol tools, giving Claude (and any MCP-compatible AI) direct access to GPU inference.

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Install in Claude Desktop (2 minutes)

1. Get your API key (or use x402 for autonomous agents)

Visit gpubridge.io and grab a free API key, or use the x402 protocol for keyless agent payments.

2. Add to claude_desktop_config.json

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "gpu-bridge": {
      "command": "npx",
      "args": ["-y", "@gpu-bridge/mcp-server"],
      "env": {
        "GPUBRIDGE_API_KEY": "your_api_key_here"
      }
    }
  }
}

3. Restart Claude Desktop

That's it. Claude now has access to 30 GPU-powered AI services.

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MCP Tools

gpu_run

Run any GPU-Bridge service. The primary tool for executing AI tasks.

Parameters:
  service  (string)  — Service key (e.g., "llm-4090", "flux-schnell", "whisper-l4")
  input    (object)  — Service-specific input parameters
  priority (string)  — Optional: "fast" (lowest latency) or "cheap" (lowest cost)

gpu_catalog

Get the full catalog of available services with pricing and capabilities.

gpu_estimate

Estimate cost before running a service. No authentication required.

gpu_status

Check the status of a job and retrieve results.

gpu_balance

Check your current balance, daily spend, and volume discount tier.

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30 Available Services

Language Models (LLMs)

Service ID	Description	Notes
llm-4090	General purpose LLM	Sub-second via Groq
llm-a100	Maximum capability LLM	Largest models
llm-l4	Ultra-fast, low cost LLM	Budget option
code-4090	Code generation	Optimized for code
llm-stream	Streaming LLM responses	Real-time output

Image Generation

Service ID	Description	Notes
flux-schnell	FLUX.1 Schnell	Fast, 4-step generation
flux-dev	FLUX.1 Dev	High quality
sdxl-4090	Stable Diffusion XL	Versatile
sd35-l4	Stable Diffusion 3.5	Latest SD model
img2img-4090	Image-to-image	Style transfer, editing

Vision & Image Analysis

Service ID	Description	Notes
llava-4090	Visual Q&A	Image understanding
ocr-l4	Text extraction (OCR)	Multi-language
rembg-l4	Background removal	Instant
caption-4090	Image captioning	Auto-describe images
nsfw-detect	Content moderation	NSFW classification

Speech-to-Text

Service ID	Description	Notes
whisper-l4	Fast transcription	Sub-second
whisper-a100	High accuracy transcription	Large files
diarize-l4	Speaker diarization	Who said what

Text-to-Speech

Service ID	Description	Notes
tts-l4	Voice cloning TTS	40+ voices
tts-fast	Ultra-fast TTS	Lowest latency
bark-4090	Expressive TTS	Emotion, laughter

Audio Generation

Service ID	Description	Notes
musicgen-l4	Music generation	Text-to-music
audiogen-l4	Sound effects	Text-to-SFX

Embeddings & Search

Service ID	Description	Notes
embed-l4	Text embeddings	Multilingual
embed-code	Code embeddings	For code search
rerank	Document reranking	Jina, sub-second

Video

Service ID	Description	Notes
animatediff	Text-to-video	AnimateDiff
video-enhance	Video upscaling	Up to 4K

Utilities

Service ID	Description	Notes
pdf-parse	Document parsing	PDF/DOCX to text

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x402: For Autonomous AI Agents

GPU-Bridge supports the x402 payment protocol, enabling truly autonomous AI agents to pay for compute without human intervention.

Agent Request → GPU-Bridge returns HTTP 402 Payment Required
      ↓
Agent pays USDC on Base L2 (gas < $0.01, settles in 2s)
      ↓
Agent retries with payment proof → GPU-Bridge executes and returns result

Python Example with x402

from x402.client import PaymentClient

client = PaymentClient(private_key="0x...", chain="base")

response = client.request(
    "POST",
    "https://api.gpubridge.io/v1/run",
    json={
        "service": "flux-schnell",
        "input": {"prompt": "A robot painting on a canvas", "steps": 4}
    }
)
print(response.json())

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Pricing

Category	Starting From
LLMs	$0.003/1K tokens
Image Generation	$0.01/image
Speech-to-Text	$0.005/minute
Text-to-Speech	$0.005/1K chars
Embeddings	$0.0001/1K tokens
Reranking	$0.001/query
PDF Parsing	$0.005/document

All prices in USD. x402 payments in USDC on Base L2.

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Links

• Website: gpubridge.io
• Docs: gpubridge.io/docs
• Catalog: gpubridge.io/catalog
• GitHub: github.com/gpu-bridge
• npm: @gpu-bridge/mcp-server

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License

MIT © Healthtech Capital LLC