LLM Gateway

---

name: nexus-llm-gateway

description: "Smart multi-model AI gateway on Cardano. Routes prompts to the best LLM (GPT-5.2, Claude Sonnet 4.5, GPT-4o, Claude Haiku 4.5, GPT-4o-mini) with automatic fallback, tiered pricing, and OpenAI-compatible format. Pay with ADA via Masumi."

version: 1.0.0

capabilities:

- id: invoke-llm-gateway

description: "Smart multi-model AI gateway on Cardano. Routes prompts to the best LLM (GPT-5.2, Claude Sonnet 4.5, GPT-4o, Claude Haiku 4.5, GPT-4o-mini) with automatic fallback, tiered pricing, and OpenAI-compatible format. Pay with ADA via Masumi."

permissions:

network: true

filesystem: false

shell: false

inputs:

- name: prompt

type: string

required: true

description: "The prompt to send"

- name: tier

type: string

required: false

description: "The tier parameter"

- name: model

type: string

required: false

description: "Optional: specific model override"

- name: task_type

type: string

required: false

description: "The task_type parameter"

- name: messages

type: array

required: false

description: "OpenAI-compatible messages array"

outputs:

type: object

properties:

result:

type: string

description: "The service response"

requires:

env: [NEXUS_PAYMENT_PROOF]

metadata: '{"openclaw":{"emoji":"\u26a1","requires":{"env":["NEXUS_PAYMENT_PROOF"]},"primaryEnv":"NEXUS_PAYMENT_PROOF"}}'

---

# LLM Gateway

> NEXUS Agent-as-a-Service on Cardano | Price: $0.10/request

When to use

Use when you need to call any LLM (GPT-5.2, Claude Sonnet 4.5, GPT-4o, Claude Haiku 4.5, GPT-4o-mini) through one endpoint. Supports tier-based routing (economy/standard/premium/auto) and OpenAI-compatible message format.

Steps

1. Send a POST request to the NEXUS API endpoint with your input.

2. Include the `X-Payment-Proof` header (Masumi payment ID or `sandbox_test` for testing).

3. Parse the JSON response and return the result.

API Call

curl -X POST https://ai-service-hub-15.emergent.host/api/original-services/llm-gateway \
  -H "Content-Type: application/json" \
  -H "X-Payment-Proof: $NEXUS_PAYMENT_PROOF" \
  -d '{"prompt": "Write a Python function to sort a list", "tier": "auto", "task_type": "code"}'

**Endpoint:** `https://ai-service-hub-15.emergent.host/api/original-services/llm-gateway`

**Method:** POST

**Headers:**

External Endpoints

| URL | Method | Data Sent |

|-----|--------|-----------|

| `https://ai-service-hub-15.emergent.host/api/original-services/llm-gateway` | POST | Input parameters as JSON body |

Security & Privacy

Model Invocation Note

This skill calls the NEXUS AI service API which uses LLM models (GPT-5.2, Claude Sonnet 4.5, GPT-4o) to process requests. The AI processes your input server-side and returns a structured response. You may opt out by not installing this skill.

Trust Statement

By using this skill, your input data is sent to NEXUS (https://ai-service-hub-15.emergent.host) for AI processing. Payments are non-custodial via the Masumi Protocol on Cardano. Only install if you trust NEXUS as a service provider. Visit https://ai-service-hub-15.emergent.host for full documentation.

Tags

`llm`, `ai`, `gateway`, `multi-model`, `gpt`, `claude`, `router`, `cardano`