Discover / x402-echo-service.onrender.com

UUID Generator

□ No challenge detected

Generate cryptographically random UUIDv4 identifiers. POST {"count":10} and receive that many unique v4 UUIDs, 1 to 100 per call. Uses the platform CSPRNG. No storage.

x402
Base
USDC
Infra

Listed price: $0.001
Challenge detected: 0 of the last 9 checks
Last checked: 17 Oct, 09:26 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://x402-echo-service.onrender.com/uuid
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

12 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://x402-echo-service.onrender.com

POST/uuid$0.001Generate cryptographically random UUIDv4 identifiers. POST {"count":10} and receive that many unique v4 UUIDs, 1 to 100 per call. Uses the platform CSPRNG. No storage.
POST/chain/nonce$0.001Read the transaction count of an address on Base. POST {"address":"0x..."} with an optional {"pending":true} to include the mempool. Returns the nonce an agent should use for its next transaction.
POST/chain/code$0.001Determine whether an address on Base is a contract or an externally owned account. POST {"address":"0x..."} and receive isContract, the bytecode size in bytes and its keccak-256 hash. Useful before sending funds to an unfamiliar address.
POST/chain/eth-balance$0.001Read the native ETH balance of an address on Base. POST {"address":"0x..."} and receive the balance in wei and in ether. Live chain state read directly from a node, with no indexer lag and no API key.
POST/chain/erc20-balance$0.001Read an ERC-20 token balance on Base. POST {"address":"0x...","token":"0x..."} and receive the raw balance, the token decimals and the human-readable amount. Defaults to USDC when token is omitted. Live chain state, no indexer lag.
POST/chain/token$0.001Read ERC-20 metadata on Base. POST {"token":"0x..."} and receive the name, symbol, decimals and total supply, with the supply given both raw and decimal-adjusted. Reports a clear error when the address is not a token contract.
POST/hash$0.001Compute cryptographic digests of a string. POST {"input":"...","algorithms":["sha256"]} and receive one hex digest per requested algorithm. Supports sha256, sha512 and keccak256. Deterministic, no storage, no upstream calls.
POST/chain/block$0.001Read the head of the Base chain, or a specific block. POST {} for the latest block, or {"number":12345678} for one by height. Returns number, hash, unix timestamp, gas used and transaction count. Useful as an authoritative chain clock.
POST/chain/gas$0.001Current gas conditions on Base. POST {} and receive the legacy gas price and the EIP-1559 base fee of the latest block, in wei and gwei. Useful for agents deciding whether to transact now or wait.
POST/chain/tx$0.001Look up a transaction on Base by hash. POST {"hash":"0x..."} and receive its status, block number, from and to addresses, value, gas used and effective gas price. Returns a clear not-found rather than an empty object when the hash is unknown.
POST/time$0.001Server time in several formats at once. POST {} and receive the current UTC instant as ISO-8601, unix seconds, unix milliseconds and RFC-2822. Useful for agents that need an authoritative clock they did not compute themselves.
POST/base64$0.001Encode or decode base64. POST {"mode":"encode","input":"..."} or {"mode":"decode",...}. Supports standard and url-safe alphabets via {"urlsafe":true}. Decoding validates the input and reports an error rather than returning silent garbage.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 12 of 12 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x402-echo-service.onrender.com

Recent checks

5 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.17 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
17 Oct, 09:26 UTC	No challenge detected	405	186ms
16 Oct, 08:13 UTC	No challenge detected	405	97ms
14 Oct, 19:26 UTC	No challenge detected	405	169ms
12 Oct, 22:31 UTC	No challenge detected	405	62ms
11 Oct, 00:15 UTC	No challenge detected	405	54ms
9 Oct, 15:32 UTC	No challenge detected	405	175ms
8 Oct, 09:33 UTC	No challenge detected	405	99ms
7 Oct, 06:40 UTC	No challenge detected	405	36ms
5 Oct, 05:04 UTC	No challenge detected	405	48ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 17 Oct, 09:26 UTC, we detected no payment challenge.

What price is recorded for UUID Generator?

Its listed price is $0.001.

What payment terms does UUID Generator advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is UUID Generator listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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