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GPT-5.5 x402 Text Tools and Chat Gateway

external

Paid GPT-5.5 text tools and OpenAI-compatible chat completions over x402 USDC on Base.

by 55868614 endpoints100% uptime536ms avg

Price

from $0.0010

up to $0.0040 per request

Network

base

Category

ai

On-chain txns

42

Uptime

100%

Avg latency

536ms

Checks

29

Status

Healthy

Base URL

https://gpt55.558686.xyz

Endpoints (14)

Discovered from on-chain x402 payment activity. Prices shown are per-call in USDC.

POST/v1/chat/completions
base$0.0040

Low-cost OpenAI-compatible GPT-5.5 chat completion for AI agents, apps, and scripts. Pay up to $0.004 per request with x402 USDC on Base. Exact fixed-price and upto usage-based payment are both accepted when clients support them. Public paid calls are limited to 1500 input characters and 128 output tokens for predictable cost.

POST/v1/tools/answer
base$0.0030

Answer a short question, optionally using provided context, for lightweight context QA and agent reasoning steps. Pay up to $0.003 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/code-review
base$0.0030

Review a short code snippet or diff for bugs, edge cases, security issues, maintainability, and missing tests. Designed for agents and developers that need a quick second pass before merging. Pay up to $0.003 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/extract-json
base$0.0030

Extract structured JSON from short text according to a caller-provided schema or field list. Useful for agents that need cheap parsing, lead cleanup, invoice notes, support tickets, and lightweight ETL steps. Pay up to $0.003 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/http-status
base$0.0010

Fetch a public HTTP(S) URL and return status, final URL, headers summary, and redirect chain. This deterministic endpoint does not call 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.

POST/v1/tools/json-validate
base$0.0010

Validate JSON text or normalize a JSON value, returning parse status, type, size, and optional formatted output. This deterministic endpoint does not call 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.

POST/v1/tools/rewrite
base$0.0030

Rewrite short text for clarity, tone, grammar, style, professional messages, and concise agent output. Pay up to $0.003 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/summarize
base$0.0030

Summarize short text into concise bullets, TLDR notes, or a paragraph for agents that need quick document digestion. Pay up to $0.003 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/translate
base$0.0030

Translate short text to a requested target language for agent workflows, localization, and quick bilingual replies. Pay up to $0.003 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/url-links
base$0.0020

Fetch a public HTTP(S) URL and return normalized links, anchor text, status, title, and redirect details. This deterministic endpoint does not call an upstream model. Pay up to $0.002 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/url-metadata
base$0.0020

Fetch a public HTTP(S) URL and return status, final URL, title, meta description, canonical URL, Open Graph fields, and a short text sample. This deterministic endpoint does not call an upstream model. Pay up to $0.002 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/tools/url-text
base$0.0020

Fetch a public HTTP(S) URL and return cleaned readable text, title, final URL, status, and redirect details. This deterministic endpoint does not call an upstream model. Pay up to $0.002 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

POST/v1/x402-ping
base$0.0010

Paid x402 capability check for this GPT-5.5 gateway. This endpoint settles a small x402 payment and returns service metadata without calling the upstream model.

POST/v1/x402-ping
base$0.0010

Paid x402 capability check for this GPT-5.5 gateway. This endpoint settles a small x402 payment and returns service metadata without calling the upstream model.

Payment

Protocolx402 (direct payment, USDC)
Networkbase

How to call

Via APIHub (recommended)No wallet · pay with credits · gasless
# one-time setup
npx @apihubio/cli register
npx @apihubio/cli topup 10

# call it
npx @apihubio/cli call https://gpt55.558686.xyz \
  -X POST \
  -d '{ /* check provider docs for input */ }'

# or save it to Claude/Cursor/Codex
npx @apihubio/cli install
npx @apihubio/cli add https://gpt55.558686.xyz
APIHub pays the provider on your behalf and debits your credit balance for the exact amount. No wallet setup, no gas, no per-call signing.
Via direct x402 (advanced)Bring your own wallet
import { wrapFetchWithPayment } from "@x402/fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount("0xYOUR_PRIVATE_KEY");
const client = createWalletClient({ account, chain: base, transport: http() });
const x402Fetch = wrapFetchWithPayment(client);

const res = await x402Fetch("https://gpt55.558686.xyz", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ /* check provider docs for input */ }),
});
const data = await res.json();
Requires USDC on Base and gas on each call. The @x402/fetch client signs EIP-3009 transferWithAuthorization for each 402 response and retries.

This is an external service not operated by APIHub. Listing data is sourced from public on-chain records and third-party indexes. Payment goes directly to the service provider via the x402 protocol. APIHub does not guarantee availability, accuracy, or quality of external services.