8-bit SFX Generator
N reproducible 8-bit SFX variations of a preset in one call — the game-jam workflow (≤16 per call)
MediaLiveeip155:8453Exactvia cdp
SfxAudio8-bitGamedevSynth
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far.
$4.32
Verified settled volume
328 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-20 02:05Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x54ebFCF3870439B9db62381848c5DabC05c70d5BThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x54ebFCF3870439B9db62381848c5DabC05c70d5B",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://x402.professorsausages.com/sfx/batch",
"tags": [
"sfx",
"audio",
"8-bit",
"gamedev",
"synth"
],
"mimeType": "application/json",
"description": "N reproducible 8-bit SFX variations of a preset in one call — the game-jam workflow (≤16 per call)",
"serviceName": "8-bit SFX Generator"
},
"extensions": {
"help": {
"docs": "https://x402.professorsausages.com/sfx",
"sample": "https://x402.professorsausages.com/sfx/sample",
"example": "https://x402.professorsausages.com/sfx/batch",
"openapi": "https://x402.professorsausages.com/sfx/openapi.json"
},
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"bits": "Bit depth. Overrides the format profile; the override is echoed in formatOverride.",
"seed": "Base integer seed. Omit for a random seed, which is echoed back.",
"count": "How many variations to generate.",
"format": "Fidelity profile: wav is 44.1k/16, wav8 is 44.1k/8, retro is 22k/8. Explicit bits/sampleRate override it.",
"preset": "Preset name or alias.",
"sampleRate": "Sample rate in Hz. Overrides the format profile; the override is echoed in formatOverride."
}
},
"output": {
"type": "object",
"required": [
"preset",
"seed",
"count",
"variations"
],
"properties": {
"seed": {
"type": "integer"
},
"count": {
"type": "integer"
},
"format": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string",
"description": "The fidelity profile actually rendered (not necessarily the one requested)."
},
"preset": {
"type": "string"
},
"sampleRate": {
"type": "integer"
},
"variations": {
"type": "array",
"items": {
"type": "object",
"required": [
"seed",
"wav_base64",
"format",
"sampleRate",
"bitsPerSample",
"durationMs",
"params"
],
"properties": {
"seed": {
"type": "integer",
"description": "The integer seed used — pass it back for byte-identical output."
},
"format": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string",
"description": "The fidelity profile actually rendered (not necessarily the one requested)."
},
"params": {
"type": "object",
"properties": {
"p_duty": {
"type": "number"
},
"p_arp_mod": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"sound_vol": {
"type": "number"
},
"wave_type": {
"enum": [
0,
1,
2,
3
],
"type": "integer"
},
"p_hpf_freq": {
"type": "number"
},
"p_hpf_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_lpf_freq": {
"type": "number"
},
"p_lpf_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_pha_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_arp_speed": {
"type": "number"
},
"p_base_freq": {
"type": "number"
},
"p_duty_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_env_decay": {
"type": "number"
},
"p_env_punch": {
"type": "number"
},
"p_freq_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_vib_speed": {
"type": "number"
},
"sample_rate": {
"type": "integer"
},
"sample_size": {
"enum": [
8,
16
],
"type": "integer"
},
"p_env_attack": {
"type": "number"
},
"p_freq_dramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_freq_limit": {
"type": "number"
},
"p_pha_offset": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_env_sustain": {
"type": "number"
},
"p_repeat_speed": {
"type": "number"
},
"p_vib_strength": {
"type": "number"
},
"p_lpf_resonance": {
"type": "number"
}
},
"description": "SFXR synthesis parameters. wave_type: 0=square,1=sawtooth,2=sine,3=noise. All p_* are on [0,1] except SIGNED ones on [-1,1]. sample_rate/sample_size reflect the chosen output."
},
"clipped": {
"type": "integer",
"description": "Samples clamped to range (0 = clean)."
},
"mimeType": {
"enum": [
"audio/wav"
],
"type": "string"
},
"byteLength": {
"type": "integer",
"description": "Total WAV size in bytes."
},
"durationMs": {
"type": "integer"
},
"sampleRate": {
"type": "integer"
},
"wav_base64": {
"type": "string",
"description": "Base64-encoded WAV (RIFF PCM, mono)."
},
"sampleCount": {
"type": "integer"
},
"bitsPerSample": {
"enum": [
8,
16
],
"type": "integer"
}
}
}
},
"bitsPerSample": {
"type": "integer"
},
"formatOverride": {
"type": "object",
"required": [
"requested",
"applied",
"overriddenBy",
"detail"
],
"properties": {
"detail": {
"type": "string"
},
"applied": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string"
},
"requested": {
"type": "string",
"description": "The `format` the caller sent."
},
"overriddenBy": {
"type": "array",
"items": {
"enum": [
"bits",
"sampleRate"
],
"type": "string"
}
}
},
"description": "Only present when explicit bits/sampleRate overrode the requested `format`."
}
}
}
},
"schema": {
"type": "object",
"required": [
"input"
],
"properties": {
"input": {
"type": "object"
},
"output": {
"type": "object"
}
}
},
"category": "audio",
"routeTemplate": "https://x402.professorsausages.com/sfx/batch"
},
"sample": {
"url": "https://x402.professorsausages.com/sfx/sample",
"hint": "A real cached response from this API (with its capture timestamp), free — judge the data quality before paying."
},
"catalog": {
"message": "You called 8-bit SFX Generator. Agents doing audio work commonly also use these — same pay-per-call model, each with a FREE real sample record (freeSample link):",
"related": [
{
"call": "/token-safety?ref=xsell&v=related&from=sfx",
"name": "Token Safety Check",
"summary": "On-chain token risk screening for agents",
"freeSample": "/token-safety/sample?ref=xsell&v=related&from=sfx"
},
{
"call": "/address-screen?ref=xsell&v=related&from=sfx",
"name": "Address Risk Screen",
"summary": "Crypto address risk screening for agents",
"freeSample": "/address-screen/sample?ref=xsell&v=related&from=sfx"
},
{
"call": "/sanctions-screen?ref=xsell&v=related&from=sfx",
"name": "OFAC Sanctions Name Screen",
"summary": "Fuzzy OFAC name screening for agents with compliance duties",
"freeSample": "/sanctions-screen/sample?ref=xsell&v=related&from=sfx"
}
],
"strategy": "related",
"catalogUrl": "https://x402.professorsausages.com/?ref=402&v=related&from=sfx"
},
"suggest": {
"url": "https://x402.professorsausages.com/suggest",
"hint": "Missing data you'd pay for? POST {want, would_pay_usd} — free. The most-requested datasets get built first."
},
"discount": {
"off": "50%",
"hint": "Send X-Intent: <40+ chars describing what you're building and what data you need> for 50% off this call.",
"header": "X-Intent"
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 USDC on Base to 0x54eb…70d5B. The signed payment is good for 1 minute.
- Paid to
- 0x54eb…70d5B
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 50000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x54ebFCF3870439B9db62381848c5DabC05c70d5B",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"help": {
"docs": "https://x402.professorsausages.com/sfx",
"sample": "https://x402.professorsausages.com/sfx/sample",
"example": "https://x402.professorsausages.com/sfx/batch",
"openapi": "https://x402.professorsausages.com/sfx/openapi.json"
},
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"bits": "Bit depth. Overrides the format profile; the override is echoed in formatOverride.",
"seed": "Base integer seed. Omit for a random seed, which is echoed back.",
"count": "How many variations to generate.",
"format": "Fidelity profile: wav is 44.1k/16, wav8 is 44.1k/8, retro is 22k/8. Explicit bits/sampleRate override it.",
"preset": "Preset name or alias.",
"sampleRate": "Sample rate in Hz. Overrides the format profile; the override is echoed in formatOverride."
}
},
"output": {
"type": "object",
"required": [
"preset",
"seed",
"count",
"variations"
],
"properties": {
"seed": {
"type": "integer"
},
"count": {
"type": "integer"
},
"format": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string",
"description": "The fidelity profile actually rendered (not necessarily the one requested)."
},
"preset": {
"type": "string"
},
"sampleRate": {
"type": "integer"
},
"variations": {
"type": "array",
"items": {
"type": "object",
"required": [
"seed",
"wav_base64",
"format",
"sampleRate",
"bitsPerSample",
"durationMs",
"params"
],
"properties": {
"seed": {
"type": "integer",
"description": "The integer seed used — pass it back for byte-identical output."
},
"format": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string",
"description": "The fidelity profile actually rendered (not necessarily the one requested)."
},
"params": {
"type": "object",
"properties": {
"p_duty": {
"type": "number"
},
"p_arp_mod": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"sound_vol": {
"type": "number"
},
"wave_type": {
"enum": [
0,
1,
2,
3
],
"type": "integer"
},
"p_hpf_freq": {
"type": "number"
},
"p_hpf_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_lpf_freq": {
"type": "number"
},
"p_lpf_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_pha_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_arp_speed": {
"type": "number"
},
"p_base_freq": {
"type": "number"
},
"p_duty_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_env_decay": {
"type": "number"
},
"p_env_punch": {
"type": "number"
},
"p_freq_ramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_vib_speed": {
"type": "number"
},
"sample_rate": {
"type": "integer"
},
"sample_size": {
"enum": [
8,
16
],
"type": "integer"
},
"p_env_attack": {
"type": "number"
},
"p_freq_dramp": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_freq_limit": {
"type": "number"
},
"p_pha_offset": {
"type": "number",
"description": "SIGNED [-1,1]"
},
"p_env_sustain": {
"type": "number"
},
"p_repeat_speed": {
"type": "number"
},
"p_vib_strength": {
"type": "number"
},
"p_lpf_resonance": {
"type": "number"
}
},
"description": "SFXR synthesis parameters. wave_type: 0=square,1=sawtooth,2=sine,3=noise. All p_* are on [0,1] except SIGNED ones on [-1,1]. sample_rate/sample_size reflect the chosen output."
},
"clipped": {
"type": "integer",
"description": "Samples clamped to range (0 = clean)."
},
"mimeType": {
"enum": [
"audio/wav"
],
"type": "string"
},
"byteLength": {
"type": "integer",
"description": "Total WAV size in bytes."
},
"durationMs": {
"type": "integer"
},
"sampleRate": {
"type": "integer"
},
"wav_base64": {
"type": "string",
"description": "Base64-encoded WAV (RIFF PCM, mono)."
},
"sampleCount": {
"type": "integer"
},
"bitsPerSample": {
"enum": [
8,
16
],
"type": "integer"
}
}
}
},
"bitsPerSample": {
"type": "integer"
},
"formatOverride": {
"type": "object",
"required": [
"requested",
"applied",
"overriddenBy",
"detail"
],
"properties": {
"detail": {
"type": "string"
},
"applied": {
"enum": [
"wav16",
"wav8",
"retro",
"custom"
],
"type": "string"
},
"requested": {
"type": "string",
"description": "The `format` the caller sent."
},
"overriddenBy": {
"type": "array",
"items": {
"enum": [
"bits",
"sampleRate"
],
"type": "string"
}
}
},
"description": "Only present when explicit bits/sampleRate overrode the requested `format`."
}
}
}
},
"schema": {
"type": "object",
"required": [
"input"
],
"properties": {
"input": {
"type": "object"
},
"output": {
"type": "object"
}
}
},
"category": "audio",
"routeTemplate": "https://x402.professorsausages.com/sfx/batch"
},
"sample": {
"url": "https://x402.professorsausages.com/sfx/sample",
"hint": "A real cached response from this API (with its capture timestamp), free — judge the data quality before paying."
},
"catalog": {
"message": "This endpoint is 1 of 35 pay-per-call APIs for agents — all same x402 payment + auth. Browse the full menu free (no payment) at the catalog URL; every API serves a free real sample record at /<api>/sample.",
"strategy": "minimal",
"catalogUrl": "https://x402.professorsausages.com/?ref=402&v=minimal&from=sfx"
},
"suggest": {
"url": "https://x402.professorsausages.com/suggest",
"hint": "Missing data you'd pay for? POST {want, would_pay_usd} — free. The most-requested datasets get built first."
},
"discount": {
"off": "50%",
"hint": "Send X-Intent: <40+ chars describing what you're building and what data you need> for 50% off this call.",
"header": "X-Intent"
}
}Provenance
- Seen in the source catalog
- 2026-09-20 02:05Z
- Last indexed by Roundhouse
- 2026-09-24 19:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 19:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service 8-bit SFX Generator and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=8-bit%20SFX%20Generator' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://x402.professorsausages.com/sfx/batch, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.