8-bit SFX Generator

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": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://x402.professorsausages.com/sfx/mutate",
    "tags": [
      "sfx",
      "audio",
      "8-bit",
      "gamedev",
      "synth"
    ],
    "mimeType": "application/json",
    "description": "Mutate a known-good seed's sound (classic sfxr mutate) — nearby variations by parameter perturbation",
    "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/mutate",
      "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": "Integer seed of the base sound. Omit for a random seed.",
            "amount": "Mutation magnitude.",
            "format": "Fidelity profile: wav is 44.1k/16, wav8 is 44.1k/8, retro is 22k/8. Explicit bits/sampleRate override it.",
            "preset": "Base preset. Omit for a random base.",
            "sampleRate": "Sample rate in Hz. Overrides the format profile; the override is echoed in formatOverride."
          }
        },
        "output": {
          "type": "object",
          "required": [
            "seed",
            "wav_base64",
            "params"
          ],
          "properties": {
            "seed": {
              "type": "integer",
              "description": "The integer seed used — pass it back for byte-identical output."
            },
            "amount": {
              "type": "number"
            },
            "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."
            },
            "preset": {
              "type": "string"
            },
            "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"
            },
            "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/mutate"
    },
    "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"
    }
  },
  "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.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x54ebFCF3870439B9db62381848c5DabC05c70d5B",
    "amount": "30000",
    "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/mutate",
    "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": "Integer seed of the base sound. Omit for a random seed.",
          "amount": "Mutation magnitude.",
          "format": "Fidelity profile: wav is 44.1k/16, wav8 is 44.1k/8, retro is 22k/8. Explicit bits/sampleRate override it.",
          "preset": "Base preset. Omit for a random base.",
          "sampleRate": "Sample rate in Hz. Overrides the format profile; the override is echoed in formatOverride."
        }
      },
      "output": {
        "type": "object",
        "required": [
          "seed",
          "wav_base64",
          "params"
        ],
        "properties": {
          "seed": {
            "type": "integer",
            "description": "The integer seed used — pass it back for byte-identical output."
          },
          "about": {
            "type": "string",
            "description": "What this response is and where its data comes from, in one sentence."
          },
          "amount": {
            "type": "number"
          },
          "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."
          },
          "preset": {
            "type": "string"
          },
          "clipped": {
            "type": "integer",
            "description": "Samples clamped to range (0 = clean)."
          },
          "related": {
            "type": "object",
            "description": "Next steps as paths on this origin. Each is priced by its own 402 challenge; GET /.well-known/x402 prices the whole origin in one free call.",
            "additionalProperties": {
              "type": "string"
            }
          },
          "mimeType": {
            "enum": [
              "audio/wav"
            ],
            "type": "string"
          },
          "freshness": {
            "type": "object",
            "required": [
              "tier",
              "as_of",
              "age_seconds",
              "max_age_seconds"
            ],
            "properties": {
              "note": {
                "type": "string"
              },
              "tier": {
                "type": "string",
                "example": "nightly"
              },
              "as_of": {
                "type": "string",
                "description": "Newest datum this answer is based on (ISO 8601)."
              },
              "age_seconds": {
                "type": "integer",
                "minimum": 0
              },
              "max_age_seconds": {
                "type": [
                  "integer",
                  "null"
                ],
                "minimum": 0
              }
            },
            "description": "How fresh the data is, measured when you called. `age_seconds` is the number to act on; `max_age_seconds` is the refresh cadence (null = deterministic, cannot go stale)."
          },
          "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"
          },
          "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/mutate"
  },
  "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": "34 more agent-ready APIs you can call the same way (x402 pay-per-call). Full free catalog at the catalog URL; each serves a FREE real sample record (freeSample link) — taste before you pay. A few you might want:",
    "services": [
      {
        "call": "/token-safety?ref=xsell&v=menu&from=sfx",
        "name": "Token Safety Check",
        "summary": "On-chain token risk screening for agents",
        "freeSample": "/token-safety/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/address-screen?ref=xsell&v=menu&from=sfx",
        "name": "Address Risk Screen",
        "summary": "Crypto address risk screening for agents",
        "freeSample": "/address-screen/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/sanctions-screen?ref=xsell&v=menu&from=sfx",
        "name": "OFAC Sanctions Name Screen",
        "summary": "Fuzzy OFAC name screening for agents with compliance duties",
        "freeSample": "/sanctions-screen/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/email-check?ref=xsell&v=menu&from=sfx",
        "name": "Email Deliverability Check",
        "summary": "Part of the Trust & Verification suite — verify anything, pay-per-check",
        "freeSample": "/email-check/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/domain-intel?ref=xsell&v=menu&from=sfx",
        "name": "Domain Intel (RDAP + DNS)",
        "summary": "Domain registration truth + DNS posture for agents, pay-per-check — part of the Trust & Verification suite…",
        "freeSample": "/domain-intel/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/url-screen?ref=xsell&v=menu&from=sfx",
        "name": "Malicious URL Screen",
        "summary": "Phishing & malicious-URL screening for agents — hand over any http(s) URL and get a structured risk verdict…",
        "freeSample": "/url-screen/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/phone-check?ref=xsell&v=menu&from=sfx",
        "name": "Phone Number Validation",
        "summary": "Phone-number validation for agents — is this number real, what region and line type, and its canonical E.16…",
        "freeSample": "/phone-check/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/swap-quote?ref=xsell&v=menu&from=sfx",
        "name": "DEX Swap Quote",
        "summary": "Read-only on-chain swap pricing for agents",
        "freeSample": "/swap-quote/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/gas-oracle?ref=xsell&v=menu&from=sfx",
        "name": "Multichain Gas Oracle",
        "summary": "Live multi-chain gas oracle for on-chain agents",
        "freeSample": "/gas-oracle/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/prices?ref=xsell&v=menu&from=sfx",
        "name": "Crypto Prices (Chainlink)",
        "summary": "Decentralized crypto spot prices + oracle price history for on-chain agents, read DIRECTLY from Chainlink p…",
        "freeSample": "/prices/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/ens-resolve?ref=xsell&v=menu&from=sfx",
        "name": "ENS Resolver",
        "summary": "Spoof-safe ENS resolution for on-chain agents",
        "freeSample": "/ens-resolve/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/chain-registry?ref=xsell&v=menu&from=sfx",
        "name": "EVM Chain Registry",
        "summary": "Canonical EVM chain metadata for agents touching an unfamiliar chainId — cleaned, probed, and indexed from…",
        "freeSample": "/chain-registry/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/company?ref=xsell&v=menu&from=sfx",
        "name": "Company Enrichment (SEC EDGAR)",
        "summary": "Company enrichment for agents — hand over a ticker, CIK, or name and get ground-truth SEC identity plus fin…",
        "freeSample": "/company/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/sec-10k?ref=xsell&v=menu&from=sfx",
        "name": "SEC Annual Report (10-K)",
        "summary": "U.S",
        "freeSample": "/sec-10k/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/sec-10q?ref=xsell&v=menu&from=sfx",
        "name": "SEC Quarterly Report (10-Q)",
        "summary": "U.S",
        "freeSample": "/sec-10q/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/sec-8k?ref=xsell&v=menu&from=sfx",
        "name": "SEC Current Report (8-K)",
        "summary": "U.S",
        "freeSample": "/sec-8k/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/insider-trades?ref=xsell&v=menu&from=sfx",
        "name": "Insider Trades",
        "summary": "SEC Form 4 insider transactions made agent-ready — who's buying and selling their own company's stock, norm…",
        "freeSample": "/insider-trades/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/13f-holdings?ref=xsell&v=menu&from=sfx",
        "name": "13F Institutional Holdings",
        "summary": "What every institutional manager actually holds, made agent-ready — normalized SEC 13F-HR portfolios for ~8…",
        "freeSample": "/13f-holdings/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/macro?ref=xsell&v=menu&from=sfx",
        "name": "US Macro Indicators",
        "summary": "WIP / FREE (BETA) — currently free while data coverage and freshness are expanded; pricing returns once pro…",
        "freeSample": "/macro/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/roadmap?ref=xsell&v=menu&from=sfx",
        "name": "Roadmap",
        "summary": "FREE — the published edge of this gateway's coverage",
        "freeSample": "/roadmap/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/patent?ref=xsell&v=menu&from=sfx",
        "name": "US Patent Search",
        "summary": "WIP / FREE (BETA) — currently free; the corpus is a small curated slice of landmark patents while the full…",
        "freeSample": "/patent/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/ipo-calendar?ref=xsell&v=menu&from=sfx",
        "name": "IPO Calendar",
        "summary": "The US IPO pipeline straight from SEC EDGAR — public domain, no paid feed",
        "freeSample": "/ipo-calendar/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/fx-rates?ref=xsell&v=menu&from=sfx",
        "name": "FX Reference Rates",
        "summary": "Daily reference FX rates for commerce and accounting agents",
        "freeSample": "/fx-rates/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/holidays?ref=xsell&v=menu&from=sfx",
        "name": "Market Holiday Calendar",
        "summary": "Deterministic market & bank holiday calendar for finance agents",
        "freeSample": "/holidays/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/iban?ref=xsell&v=menu&from=sfx",
        "name": "IBAN Validator & Decoder",
        "summary": "IBAN validation & decoding for payment agents",
        "freeSample": "/iban/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/timezone?ref=xsell&v=menu&from=sfx",
        "name": "Timezone & DST Toolkit",
        "summary": "DST-correct timezone math for scheduling agents",
        "freeSample": "/timezone/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/weather?ref=xsell&v=menu&from=sfx",
        "name": "Weather & Forecast",
        "summary": "Weather for agents — the canonical tool call, pay-per-use",
        "freeSample": "/weather/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/news?ref=xsell&v=menu&from=sfx",
        "name": "Multi-Source News",
        "summary": "Multi-source, agent-ready news — headlines, multi-day archive keyword search, and a sentiment timeline over…",
        "freeSample": "/news/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/reader?ref=xsell&v=menu&from=sfx",
        "name": "Web Reader & Screenshot",
        "summary": "Give your agent a real browser",
        "freeSample": "/reader/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/convert?ref=xsell&v=menu&from=sfx",
        "name": "Document Convert (PDF/Image → Text)",
        "summary": "Document conversion tools for agents — hand over any PDF or image (public URL, base64, or raw POSTed bytes,…",
        "freeSample": "/convert/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/nft?ref=xsell&v=menu&from=sfx",
        "name": "NFT Insight (Scam Check, Owners)",
        "summary": "NFT collection intelligence for agents — Ethereum now, Base next",
        "freeSample": "/nft/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/icons?ref=xsell&v=menu&from=sfx",
        "name": "Icon Search",
        "summary": "Inline SVG icons for agents building UIs without CDN access — CSP blocks icon CDNs and hand-drawn path data…",
        "freeSample": "/icons/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/pokemon?ref=xsell&v=menu&from=sfx",
        "name": "Pokemon API",
        "summary": "Pokemon knowledge base for agents",
        "freeSample": "/pokemon/sample?ref=xsell&v=menu&from=sfx"
      },
      {
        "call": "/minecraft?ref=xsell&v=menu&from=sfx",
        "name": "Minecraft Data",
        "summary": "Minecraft game data for agents — look up any block or item by name with properties, ids and metadata, list…",
        "freeSample": "/minecraft/sample?ref=xsell&v=menu&from=sfx"
      }
    ],
    "strategy": "menu",
    "catalogUrl": "https://x402.professorsausages.com/?ref=402&v=menu&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 07:40Z

Last enriched (probe, favicon, geo)

2026-09-10 19:45Z

x402 version

2

Max timeout

60s

Liveness probe

HTTP 402