●

Aubrai x402 API

AI PAYMENT-READY imported

payment-ready until 2026-08-20

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Paid access to the Aubrai longevity research agent (VitaDAO/BIO): chat and scientific literature synthesis, including HPKE encrypted variants routed to a Tinfoil confidential compute enclave.

Pay from $0.02 to $0.03 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-03-13 · $670.90 all-time · settled via coinbase

BASE URL https://x402-api.aubr.ai │ ENDPOINTS 4 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-20 │ MONITORED SINCE 2026-07-20

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%

uptime 24h: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 345ms
avg response: 189ms
total checks: 2,145

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.02 to $0.03 (p58 in AI)

price (min): $0.02
price (max): $0.03
category percentile (min): p58 in AI
category percentile (max): p37 in AI
endpoints / prices: 4 / 2
model: tiered
stability: 100%

risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

traction $8.18 30d · 5 buyers

volume 30d: $8.18
buyers 30d: 5
settlements 30d: 399
first settlement: 2026-03-13
last settlement: 2026-08-13
top buyer share: 77% of 30d volume
trend 7d vs 30d: 1.04x the 30d daily rate
networks: eip155:8453
volume all-time: $670.90
settlements all-time: 23,064
median settlement 30d: $0.02
max settlement 30d: $0.03
settled via: coinbase ($8.18, 399 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

Provides AI-powered chat and literature analysis services

category: ai-chat
in: body

aichatliterature-analysis

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	PRICE	NETWORK	ASSET	402 CHANNEL
POST	/api/chat	$0.02	Base	USDC	header
POST	/api/chat/encrypted	$0.02	Base	USDC	header
POST	/api/literature	$0.03	Base	USDC	header
POST	/api/literature/encrypted	$0.03	Base	USDC	header

4 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /api/chat returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i -X POST 'https://x402-api.aubr.ai/api/chat'

// 402 response (captured by monitor) · 4 payloads · click to expand

[
  {
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x44dC2dceaA22c7EF6B2E2cF2362Fd3FB476b7c2C",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://x402-api.aubr.ai/api/chat",
      "mimeType": "application/json",
      "description": "Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "fast": true,
              "message": "What is rapamycin?"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "status": "queued",
              "requestId": "req_abc123"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "bodyType",
                "body",
                "method"
              ],
              "properties": {
                "body": {
                  "required": [
                    "message"
                  ],
                  "properties": {
                    "fast": {
                      "type": "boolean",
                      "description": "true → quick conversational answer (3-6s). false/omit → deep research with citations (15-25s)."
                    },
                    "message": {
                      "type": "string",
                      "description": "Chat message"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x44dC2dceaA22c7EF6B2E2cF2362Fd3FB476b7c2C",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 600
      }
    ],
    "resource": {
      "url": "https://x402-api.aubr.ai/api/chat/encrypted",
      "mimeType": "application/json",
      "description": "Send an HPKE-encrypted prompt to the Aubrai chat agent running inside an attested private enclave. Only the enclave can decrypt your message."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "hpke_ciphertext": "<base64-encrypted-prompt>",
              "hpke_ephemeral_public_key": "<base64-ephemeral-pubkey>"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "status": "queued",
              "pollUrl": "https://x402-api.aubr.ai/api/chat/encrypted/status/req_abc123",
              "requestId": "req_abc123"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "bodyType",
                "body",
                "method"
              ],
              "properties": {
                "body": {
                  "required": [
                    "hpke_ciphertext",
                    "hpke_ephemeral_public_key"
                  ],
                  "properties": {
                    "hpke_ciphertext": {
                      "type": "string",
                      "description": "HPKE-encrypted prompt, base64-encoded"
                    },
                    "hpke_ephemeral_public_key": {
                      "type": "string",
                      "description": "Sender's one-time X25519 public key, base64-encoded"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x44dC2dceaA22c7EF6B2E2cF2362Fd3FB476b7c2C",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 1800
      }
    ],
    "resource": {
      "url": "https://x402-api.aubr.ai/api/literature",
      "mimeType": "application/json",
      "description": "Search and synthesize scientific literature on longevity and aging. Submit a research question; returns cited answer with references from PubMed and other sources."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "mode": "deep",
              "tags": [
                "NAD+",
                "autophagy"
              ],
              "sources": [
                "pubmed"
              ],
              "tagMode": "fanout",
              "question": "Research radar for longevity tracked terms",
              "sourceProfile": "clinical",
              "includeRejected": false,
              "filterReferences": true,
              "retrievalProfile": "litqa-recall"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "jobId": "lit_abc123",
              "status": "queued",
              "quality": {
                "filtered": true,
                "rawCount": 12,
                "evidenceThin": false,
                "acceptedCount": 5,
                "lowConfidence": false,
                "rejectedCount": 7,
                "rejectionReasons": {
                  "low_relevance": 3,
                  "low_query_overlap": 4
                }
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "bodyType",
                "body",
                "method"
              ],
              "properties": {
                "body": {
                  "required": [
                    "question"
                  ],
                  "properties": {
                    "mode": {
                      "enum": [
                        "fast",
                        "deep"
                      ],
                      "type": "string",
                      "description": "Search depth"
                    },
                    "tags": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      },
                      "description": "Tracked terms for radar-style searches. With tagMode=fanout, each tag is searched separately."
                    },
                    "year": {
                      "type": "string",
                      "description": "Filter by publication year"
                    },
                    "scope": {
                      "enum": [
                        "preprints",
                        "no-preprints",
                        "trials"
                      ],
                      "type": "string",
                      "description": "Opt-in scoping mapped to Exa domains: preprints (biorxiv/medrxiv/arxiv), no-preprints (exclude those), trials (clinicaltrials.gov). Omit for full index."
                    },
                    "date_to": {
                      "type": "string",
                      "description": "End date filter (YYYY-MM-DD)"
                    },
                    "sources": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      },
                      "description": "Deprecated / ignored — retrieval is one Exa index (already covers pubmed/arxiv/biorxiv/etc.). Use scope instead."
                    },
                    "tagMode": {
                      "enum": [
                        "fanout",
                        "combined"
                      ],
                      "type": "string",
                      "description": "Use fanout for independent tracked-term searches; use combined only when tags must be searched together."
                    },
                    "question": {
                      "type": "string",
                      "description": "Research question"
                    },
                    "date_from": {
                      "type": "string",
                      "description": "Start date filter (YYYY-MM-DD)"
                    },
                    "maxResults": {
                      "type": "number",
                      "description": "Max results to return"
                    },
                    "privacyMode": {
                      "type": "string",
                      "description": "Optional plaintext privacy mode forwarded to Aubrai when provided."
                    },
                    "sourceProfile": {
                      "enum": [
                        "fast-default",
                        "deep-default",
                        "clinical",
                        "paperclip",
                        "litqa-recall"
                      ],
                      "type": "string",
                      "description": "Optional source profile. Omit for Aubrai defaults."
                    },
                    "perSourceLimit": {
                      "type": "number",
                      "description": "Deprecated / ignored — Exa is a single index (no per-source cap)."
                    },
                    "includeRejected": {
                      "type": "boolean",
                      "description": "Default false — when true, completed responses include rejectedReferences[] and relevance.reason on rejected refs."
                    },
                    "filterReferences": {
                      "type": "boolean",
                      "description": "Default true upstream — drop off-topic refs. Set false for raw/unfiltered refs (debug)."
                    },
                    "retrievalProfile": {
                      "enum": [
                        "default",
                        "litqa-recall"
                      ],
                      "type": "string",
                      "description": "Optional retrieval profile: \"default\" or \"litqa-recall\"."
                    },
                    "allowSourceExpansion": {
                      "type": "boolean",
                      "description": "Deprecated / ignored — Exa is a single index. Use scope for deliberate scoping."
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x44dC2dceaA22c7EF6B2E2cF2362Fd3FB476b7c2C",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 1800
      }
    ],
    "resource": {
      "url": "https://x402-api.aubr.ai/api/literature/encrypted",
      "mimeType": "application/json",
      "description": "Send an HPKE-sealed literature query to Aubrai and receive an encrypted result. The transport terminates at Aubrai; literature retrieval and evidence processing use external services. Always async — poll the returned pollUrl."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "hpke_ciphertext": "<base64-encrypted-query>",
              "hpke_ephemeral_public_key": "<base64-ephemeral-pubkey>"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "status": "pending",
              "pollUrl": "https://x402-api.aubr.ai/api/literature/encrypted/status/req_abc123",
              "requestId": "req_abc123"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "bodyType",
                "body",
                "method"
              ],
              "properties": {
                "body": {
                  "required": [
                    "hpke_ciphertext",
                    "hpke_ephemeral_public_key"
                  ],
                  "properties": {
                    "hpke_ciphertext": {
                      "type": "string",
                      "description": "HPKE-encrypted literature query, base64-encoded"
                    },
                    "hpke_ephemeral_public_key": {
                      "type": "string",
                      "description": "Sender's one-time X25519 public key, base64-encoded"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 7d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/aubrai-x402-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME

7d UPTIME 100%

RESPONSE TIME

AVG RESP 189ms

PRICE (captured 402, USD)

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

price percentile in AI

site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-20 · last up 2026-08-13

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

SITE PILLARS

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

recent checks (18) live · click to expand

TIME STATUS RESP CAUSE

16:03:03 UTC ● OK 268ms

15:47:02 UTC ● OK 238ms

15:31:02 UTC ● OK 178ms

15:15:03 UTC ● OK 103ms

14:59:02 UTC ● OK 198ms

14:43:02 UTC ● OK 145ms

14:27:02 UTC ● OK 160ms

14:11:02 UTC ● OK 188ms

13:55:02 UTC ● OK 211ms

13:39:02 UTC ● OK 171ms

13:23:02 UTC ● OK 252ms

13:07:43 UTC ● SLOW 290ms

12:52:02 UTC ● SLOW 287ms

12:36:01 UTC ● OK 277ms

12:20:01 UTC ● OK 184ms

12:04:01 UTC ● OK 198ms

11:48:01 UTC ● OK 239ms

11:32:01 UTC ● OK 239ms

EMBED THIS BADGE

Show that Aubrai x402 API is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

status

Aubrai x402 API uptime on x402-list — live uptime

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</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

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[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/aubrai-x402-api/update.