← The evidence ledger
Evidence row 4166789
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agent402.tools/v1/audio/speech
- Recorded
- Previous row
- #3968608
- Body SHA-256
- 5ec3d112bc3574557ce24a6774b64165b718ce58ad1f7e9f9464d66fbac0b0e1
- Leaf
- 0xf9992f1992303d2ce53c662209356c42a1deac13d8cd906ffdea29e93307189f
What was observed
{
"endpoints": [
[
"x402",
"https://agent402.tools/v1/audio/speech"
]
],
"name": "Text-to-speech",
"owner_address": "0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0",
"raw": {
"accepts": [
{
"amount": "60000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"outputSchema": {
"type": "string"
},
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:143",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:43114",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:1329",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "61000",
"asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:10",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"extra": {
"name": "Global Dollar",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:4663",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42220",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x2D270e6886d130D724215A266106e6832161EAEd",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:57073",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:5042",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "permit2",
"facilitatorAddress": "0x14fDa13953Fc30428938E6BF950d036e77214e52",
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "upto"
},
{
"amount": "60000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"transactionVersions": [
0,
1
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "J7aN3PLJnTCF5qpEnvJHJsnCjcGuqC2rYtEM8Gv3xwg",
"scheme": "exact"
},
{
"amount": "600000",
"asset": "CCW67TSZV3SSS2HXMBQ5JFGCKJNXKZM7UQUWUZPUTHXSTZLEO7SJMI75",
"extra": {
"areFeesSponsored": true
},
"maxTimeoutSeconds": 300,
"network": "stellar:pubnet",
"payTo": "GDNJXCKW7ZM7GEEVP674TWPU26YJNBQ2FI4ZIPRKTPTNUEJMDHFJWWRL",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA",
"tag": "x402-global-challenge"
},
"maxTimeoutSeconds": 300,
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
"payTo": "C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:8453",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "60000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:5042",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
}
],
"description": "OpenAI-compatible text-to-speech over x402 - point any OpenAI SDK's audio.speech.create() at base_url https://agent402.tools/v1 and pay $0.06 per call in USDC, no API key, no signup. Served by Voxtral Mini TTS behind a five-model failover chain (xAI Grok Voice, Kokoro, MAI-Voice-2.1 Flash, MAI-Voice-2.1), every link proven by a real paid canary - a provider outage never becomes your failure. Up to 2,000 chars in, raw mp3 (default) or pcm bytes out - the same wire shape as OpenAI's endpoint.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"input": "Agent402 serves 500+ tools, paid per call.",
"voice": "alloy"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": "(raw mp3 bytes - Content-Type: audio/mpeg)",
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"input": {
"type": "string"
},
"model": {
"type": "string"
},
"response_format": {
"type": "string"
},
"speed": {
"type": "number"
},
"voice": {
"type": "string"
},
"zdr": {
"type": "boolean"
}
},
"required": [
"input"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "string"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_b4aw4uzd"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"id": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[a-zA-Z0-9_-]+$",
"type": "string"
},
"required": {
"type": "boolean"
}
},
"required": [
"required"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1784247360/bazaar-icons/478aced8e219894c.png",
"lastUpdated": "2026-11-08T15:59:15.079Z",
"quality": {
"l30DaysTotalCalls": 66,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-08T15:59:14.795Z"
},
"resource": "https://agent402.tools/v1/audio/speech",
"serviceName": "Text-to-speech",
"tags": [
"llm",
"tts",
"text-to-speech",
"speech",
"audio"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "OpenAI-compatible text-to-speech over x402 - point any OpenAI SDK's audio.speech.create() at base_url https://agent402.tools/v1 and pay $0.06 per call in USDC, no API key, no signup. Served by Voxtral Mini TTS behind a five-model failover chain (xAI Grok Voice, Kokoro, MAI-Voice-2.1 Flash, MAI-Voice-2.1), every link proven by a real paid canary - a provider outage never becomes your failure. Up to 2,000 chars in, raw mp3 (default) or pcm bytes out - the same wire shape as OpenAI's endpoint."
}What the leaf hashes
{"body":"5ec3d112bc3574557ce24a6774b64165b718ce58ad1f7e9f9464d66fbac0b0e1","id":4166789,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794170616593010,"prev":3968608,"subject":"x402_bazaar:https://agent402.tools/v1/audio/speech","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (183509 rows).
- 0xf9990624c8bbc80fd5c15b6e4f826fbe6f1b92eeb778a2cfc0eab463e10a6e80
- 0x72a1cbf6cfe9ee5475add04794a93472160e3e2357a2b61af4cdaa967db1a1a1
- 0x1eb66f766468103df7c3a33be81702cac84f09f11e947b9aeda6b448e5cdc000
- 0x884c13ae4c955f248deb3ba22c4d092ca04375cca157b5f665322e2a42cdc70d
- 0x09f2da2800d533900dd34fab24390fe82148bb34ea2a5b34d76c3e610ec74e41
- 0x5933c4f27f1d5f1e36075a02d38cc4a18f09227b6b1af0375fccff11c663ec6b
- 0xd7fab01ffb6711c229fb18029e17a743df52d29f41a580162ef7d11800165a3d
- 0x76aebaaf4a89040530294c7433a5d883ecfde1beddc35b8fd9381274a2b1caf9
- 0x15eed9c3423795683bebc86fcce1282d46db9215ac13cf598e29b39f016e3099
- 0x4a2efbb304e64e732860f705397a984b1d028315033edeb04b4946a65073d456
- 0xa940e39617aafc956e208308b8ee3bec9238b09db90d8ac556b25338d1c9a0b8
- 0x1efeed7116bbd54cd81632522089be854b74aa7aa8b0a760c3c40d9fcefe3dd0
- 0x6e788c5e1a4eeefc84c7766abd28d38cb96179724e786f251cf67ed6a1e4d92b
- 0x462337cfcf4a25e4d743e16c57ee689531894ccc5265ba9fcf36be4298a307ae
- 0x41be111f1c6a20bdc67d886780b7a6b2f0ff5ab9d9f6e536681f4081b7c93338
- 0xf9aac73ecfa1eb00a9ea18eb29993fb1634bd55ad625dfc8c59fd9afcef514f5
- 0x2d9754fdf3b1fe7b0030b55b1fe7e859e5c53291df3d09cef34b31423a50dc18
- Day root
- 0xbf84ec37f88c5f23d2144bd7dbc1ea0f8edc93b3764a885a7164b7923ff3460b
- Chained
- 0x9fea188e4965f50de727e97c40e18d5ff2c2ddbfd4f1ae65e22ddd6f676bccfc
- Published
- On Arc Testnet, block 71451618: 0xb5273480942a54cd07f291b8319e59976f8d9d0583181c764eed04c9b3f7a022