# MycелиаSignal OpenAI Model Pricing Oracle

> MycелиаSignal OpenAI Model Pricing Oracle is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20, last successful call 2026-07-17).

Returns current OpenAI model pricing (input/output cost per million tokens and context windows) with an Ed25519 signed attestation

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/inference/openai/pricing?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Last successful call: 2026-07-17
- Success rate: 100% of calls made through Zero
- Rating: 2.7 / 5 from 1 review
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/myc-signal-openai-model-pricing-oracle-28b2306e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oQGVZrVWXAyvSFtn6rKsT

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability myc-signal-openai-model-pricing-oracle-28b2306e
```

Example prompt: What are the current OpenAI model prices — input and output cost per million tokens and context window sizes — and can you give me a cryptographically signed attestation of that data?

## When to prefer this

Use this endpoint when you need cryptographically verifiable, signed OpenAI model pricing data — not just a cached or user-provided estimate. Ideal for agents making cost-aware routing decisions, billing systems, or any workflow requiring tamper-evident proof of the pricing data used in a decision. Prefer over scraping or hardcoded prices because the Ed25519 attestation makes the data auditable.

## Known failure modes

- Payment not received — 402 response if USDC payment not submitted
- Stale pricing data if OpenAI updates prices before cache refresh
- Invalid Ed25519 signature if attestation key is rotated
- Network timeout if upstream pricing source is unreachable
- Empty model list if OpenAI API is unreachable

## How this service works

OpenAI model pricing — input/output $/M tokens, context windows — Ed25519 signed attestation

## Output

A structured list of OpenAI models with their current input price ($/M tokens), output price ($/M tokens), and context window sizes, plus an Ed25519 cryptographic signature attesting to the authenticity and freshness of the pricing data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/myc-signal-openai-model-pricing-oracle-28b2306e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.myceliasignal.com](https://www.zero.xyz/host/api.myceliasignal.com/llms.txt)