# prxy.monster MPP Skill

Use this skill when an autonomous agent needs to buy a PRXY-managed Bedrock LLM call through MPP.

## Rules

- Use https://api.prxy.monster/v1/agent/quote before paying.
- Use https://api.prxy.monster/v1/agent/messages for one paid call.
- Use https://api.prxy.monster/v1/agent/sessions for a funded task/session.
- Read https://api.prxy.monster/.well-known/prxy-agent-commerce.json for PRXY-specific compute, session, receipt, and payment-rail metadata.
- Read https://api.prxy.monster/.well-known/prxy-atxp-mcp.json when integrating PRXY into an ATXP paid MCP server.
- Use https://api.prxy.monster/mcp for native ATXP Streamable HTTP MCP. Use prxy_ping for one-cent payment smoke tests.
- Do not send a PRXY API key to MPP routes.
- Do not use Bearer auth on MPP routes.
- First request omits Authorization and expects HTTP 402 with WWW-Authenticate: Payment.
- Retry uses Authorization: Payment <base64url credential>.
- Keep the retry body byte-for-byte equivalent to the challenged body.
- Inspect Payment-Receipt after a successful response.

## Commercial Terms

- Direct paid call: $0.50
- Funded session: $0.50 for up to 10 calls
- Effective funded-session call price: $0.05
- Provider inference: included in MPP price
- Provider key required from agent: false
- Provider: Bedrock only for MPP model options
- Refund policy: not_supported
- ATXP MCP paid smoke: $0.01 via prxy_ping, no provider call