Speech-to-text (OpenAI

agent402.tools · x402

OpenAI's own transcription wire: POST multipart/form-data with a `file` part and get the transcript back. Point any Whisper-shaped SDK at this gateway and pay per call with USDC, no account and no API key. Same model and same four-minute cap as /api/transcribe, which takes a URL instead of an upload; /v1/pro/audio/transcriptions takes it to ten minutes.

Name and description as published by x402 Bazaar

Filed under Video, audio & speech by addrbook, from the words in its listing

Live

Last successful check: 11 Nov 2026, 14:35 UTC.

answered, last 24 hours: 100%
answered, last 30 days: 100%

2 different wallets paid it in the last 30 days, as the x402 Bazaar reports. Payments

How addrbook checks →

Evidence

1 of 4 shown

Answers when askedShown
Answered a check 8 hours ago.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 16 days; 30 are needed.
Independent paying walletsNot shown
2 independent wallets paid the wallet it asks to be paid at in 30 days, counted on-chain by addrbook; 10 are needed.
Tool scanDoes not apply
Not an MCP server.

Decided 11 Nov 2026, 00:13 UTC by method 2026.11.3, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://agent402.tools/v1/audio/transcriptions

x402: an unpaid request gets a 402 with the price and pay-to wallet. The check never pays.

Who's behind it

Listed by: x402 Bazaarlast seen 11 Nov, 10:18 UTC
Wallets named: 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0named by x402 Bazaar
Proven to belong to it: Nothing yet. Is it yours?
Listed since: 25 Oct 2026, 17:52 UTC

Payments

wallets paid it, last 30 days: 2
independent of the seller: 2
paid in two or more weeks: 0
USDC payments: 4

Counted by addrbook from USDC transfers to the wallets it asks to be paid at, on Arc. A payer is independent when it is not one of the seller's own wallets and the seller did not fund it; the largest payer made 75% of the payments. Naming a wallet does not prove it is this seller's, unless a signature shows that above. Counted 11 Nov 2026, 15:25 UTC. How payers are counted

different wallets paid it, last 30 days: 2
paid calls, last 30 days: 8
last paid call (UTC): 27 Oct, 11:37

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read 11 Nov 2026, 10:18 UTC. addrbook has not counted these payments itself.

How it asks to be paid

Network	Price	Paid in	Settled by	Pays to
Base	$0.03	USDC	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Polygon	$0.03	USDC	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Arbitrum	$0.03	USDC	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Monad	30000smallest units	“USDC”not a Circle contract	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Avalanche	$0.03	USDC	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Sei	30000smallest units	“USDC”not a Circle contract	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Optimism	$0.031	USDC	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
eip155:4663	30000smallest units	“Global Dollar”not a Circle contract	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Celo	$0.03	USDC	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
eip155:57073	30000smallest units	“USDC”not a Circle contract	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Arc	$0.03	USDC	Per request	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Base	$0.03	USDC	Metered, up to the price	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Solana	$0.03	USDC	Per request	J7aN3PLJnTCF5qpEnvJHJsnCjcGuqC2rYtEM8Gv3xwg
Stellar	300000smallest units	A tokennot a Circle contract	Per request	GDNJXCKW7ZM7GEEVP674TWPU26YJNBQ2FI4ZIPRKTPTNUEJMDHFJWWRL
algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k	30000smallest units	A tokennot a Circle contract	Per request	C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE
Base	$0.03	USDC	Circle Gateway	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Arc	$0.03	USDC	Circle Gateway	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0

From its own 402 answer at 11 Nov, 14:35 UTC. USDC and Circle Gateway are recognised by their contract addresses, not by the names a seller gives them. How payments are read

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
agent402.tools	x402	Live	11 Nov, 14:35	11 Nov, 14:35	100%	100%	—

History

9 Nov 2026, 09:18 UTCWeek of 2026-11-02: 24 paying wallets, 24 of them independent, counted on-chain.#4368353
9 Nov 2026, 08:18 UTCWeek of 2026-11-02: 24 paying wallets, 24 of them independent, counted on-chain.#4365199
9 Nov 2026, 07:17 UTCWeek of 2026-11-02: 24 paying wallets, 24 of them independent, counted on-chain.#4361883
9 Nov 2026, 00:14 UTCWeek of 2026-11-02: 24 paying wallets, 24 of them independent, counted on-chain.#4337138
7 Nov 2026, 04:27 UTCPayment options changed: 17 now, 16 before.https://agent402.tools/v1/audio/transcriptions#3938840
4 Nov 2026, 19:58 UTCThe x402 Bazaar updated its listing.the x402 Bazaar#3066037
3 Nov 2026, 19:15 UTCWeek of 2026-10-26: 41 paying wallets, 41 of them independent, counted on-chain.#2629068
29 Oct 2026, 08:51 UTCPayment options changed: 16 now, 16 before.https://agent402.tools/v1/audio/transcriptions#1007915

Its whole history →

Also listed as

Other entries that share an endpoint with this one.

agent402.tools

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/speech-to-text-openai-40ce1caf/badge.svg)](https://addrbook.com/agents/speech-to-text-openai-40ce1caf)