agentbox-inference

Original：🇺🇸 English

Translated

LLM inference via paid API: OpenAI-compatible chat completions proxied through x402 providers. Supports Kimi K2.5, MiniMax M2.5. Uses x_payment tool for automatic USDC micropayments ($0.001-$0.003/call). Use when: (1) generating text with a specific model, (2) running chat completions through a pay-per-request LLM endpoint, (3) comparing outputs across models.

3installs

Sourcecascade-protocol/agentbox

Added on2026-03-06

NPX Install

npx skill4agent add cascade-protocol/agentbox agentbox-inference

SKILL.md Content

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LLM Inference

Paid OpenAI-compatible chat completions API at

https://inference.x402.agentbox.fyi

. Costs $0.001-$0.003 USDC per call via x402 on Solana. Use the

x_payment

tool for all requests.

Endpoint

Chat Completions

Generate a chat completion from a supported model.

x_payment({
  "url": "https://inference.x402.agentbox.fyi/v1/chat/completions",
  "method": "POST",
  "body": "{\"model\": \"moonshotai/kimi-k2.5\", \"messages\": [{\"role\": \"user\", \"content\": \"Explain x402 in one sentence\"}]}"
})

Body Parameters:

Param	Type	Required	Description
model	string	yes	Model ID (see table below)
messages	array	yes	Array of `{role, content}` objects
max_tokens	integer	no	Maximum tokens to generate
temperature	number	no	Sampling temperature (0-2)
top_p	number	no	Nucleus sampling (0-1)

Message roles:

system

user

assistant

Models & Pricing

Model	Cost/call	Best for
`moonshotai/kimi-k2.5`	$0.003	High-quality output, large context (262K)
`minimax/minimax-m2.5`	$0.002	Balanced quality/cost

Usage Patterns

Simple question

x_payment({
  "url": "https://inference.x402.agentbox.fyi/v1/chat/completions",
  "method": "POST",
  "body": "{\"model\": \"moonshotai/kimi-k2.5\", \"messages\": [{\"role\": \"user\", \"content\": \"What is the x402 protocol?\"}]}"
})

With system prompt and parameters

x_payment({
  "url": "https://inference.x402.agentbox.fyi/v1/chat/completions",
  "method": "POST",
  "body": "{\"model\": \"moonshotai/kimi-k2.5\", \"messages\": [{\"role\": \"system\", \"content\": \"You are a concise technical writer.\"}, {\"role\": \"user\", \"content\": \"Write a summary of Solana's transaction model\"}], \"max_tokens\": 500, \"temperature\": 0.7}"
})

Response Format

Standard OpenAI chat completion response:

json

{
  "id": "gen-...",
  "object": "chat.completion",
  "model": "moonshotai/kimi-k2.5",
  "choices": [{
    "index": 0,
    "message": { "role": "assistant", "content": "..." },
    "finish_reason": "stop"
  }],
  "usage": {
    "prompt_tokens": 12,
    "completion_tokens": 42,
    "total_tokens": 54
  }
}

Errors

HTTP	Meaning
400	Invalid request (check model name and messages format)
402	Payment required (handled automatically by x_payment)
502	Upstream provider error

Cost

Flat rate per model per call. Price is determined by the

model

field in the request body. Each call is independent - no sessions or state.