# GPT-5.5 x402 Timestamp Tool

> GPT-5.5 x402 Timestamp Tool is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.0001/call, status unknown (last checked 2026-09-15).

Converts and formats timestamps and ISO dates via a pay-per-call x402 USDC API gateway

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/tools/timestamp
- Price: $0.0001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-5-x402-timestamp-tool-86b54287
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rDd_6NqGxyirs2KO-cpRw

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 gpt-5-5-x402-timestamp-tool-86b54287
```

Example prompt: Convert the Unix timestamp 1716825600 to a readable ISO date — I want to know what date and time it corresponds to in UTC.

## When to prefer this

Use this endpoint when you need lightweight, pay-per-call timestamp conversion without a subscription, especially in agentic workflows that use x402 USDC micropayments on Base. Ideal for one-off conversions where spinning up a full date library is overkill and cost per call must be minimal ($0.0001 USDC).

## Known failure modes

- Missing or invalid 'value' query parameter returns an error response
- Insufficient USDC balance for x402 payment results in 402 Payment Required
- Invalid timestamp format may return a parsing error
- Network or gateway downtime returns 5xx error
- Non-numeric or unparseable input value causes tool failure

## How this service works

Convert Unix seconds, Unix milliseconds, or date strings into ISO, Unix seconds, Unix milliseconds, and UTC fields without calling an upstream model. Pay up to $0.001 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

## Output

Returns a JSON object with ok status, tool name ('timestamp'), a fetchedAt field indicating when the request was processed, and a summary of the conversion result including the converted or formatted date/time value.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "value": "1716825600"
  }
 },
 "output": {
  "type": "object",
  "example": {
   "ok": true,
   "tool": "timestamp",
   "fetchedAt": "2024-05-27T12:00:00Z"
  }
 }
}
```

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": true
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "value": {
       "oneOf": [
        {
         "type": "string"
        },
        {
         "type": "number"
        }
       ]
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tool": {
       "type": "string"
      },
      "fetchedAt": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tool": "timestamp",
  "summary": "Convert timestamps and ISO dates using x402 USDC payment"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpt-5-5-x402-timestamp-tool-86b54287/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)