Monitoring · x402

Longevity clinical trial search / anti-aging trial finder for research and health agents

Longevity clinical trial search / anti-aging trial finder for research and health agents. Finds active trials from ClinicalTrials.gov by condition, intervention (rapamycin, metformin, NMN, senolytics, caloric restriction), or location worldwide, with eligibil…

by longevitypulse.theaslangroupllc.com · discovered, not yet claimed by its owner · updated 2026-08-20

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Tags: bazaar · builder-code · eip2612GasSponsoring · erc20ApprovalGasSponsoring

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/5685.json for the price and payment options.
Pay. Call GET https://longevitypulse.theaslangroupllc.com/api/longevity/clinical-trials. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Solana, Polygon, Arbitrum One, eip155:480, eip155:143, eip155:196, eip155:999, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k, xrpl:0, eip155:56, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.1 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana, Polygon, Arbitrum One, eip155:480, eip155:143, eip155:196, eip155:999, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k, xrpl:0, eip155:56
Uptime: 1 of the last 1 checks answered
Calls (30d): 1 · 1 unique payers (third-party data from the public x402 Bazaar)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.1	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	Base eip155:8453	USDC	$0.1	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	604900s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.1	985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1	300s
upto	Base eip155:8453	USDC	$0.1	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	Polygon eip155:137	USDC	$0.1	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	Arbitrum One eip155:42161	USDC	$0.1	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	eip155:480 eip155:480	0x79A02482A880bCe3F13E09da970dC34dB4cD24D1	100000	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	eip155:143 eip155:143	0x754704Bc059F8C67012fEd69BC8A327a5aafb603	100000	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	eip155:196 eip155:196	0x779ded0c9e1022225f8e0630b35a9b54be713736	100000	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	eip155:999 eip155:999	0xb88339CB7199b77E23DB6E890353E22632Ba630f	100000	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s
exact	algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k	31566704	100000	62A253YPATFNJCPRKID3FKD77MYJFNTVRYRP4B4JWG36EGLPY7UXFWGI7I	300s
exact	xrpl:0 xrpl:0	XRP	100000	rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32	300s
exact	xrpl:0 xrpl:0	524C555344000000000000000000000000000000	0.1	rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32	300s
exact	eip155:56 eip155:56	0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d	100000000000000000	0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 604900
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "upto",
    "network": "eip155:8453",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:480",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x79A02482A880bCe3F13E09da970dC34dB4cD24D1",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:143",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:196",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:999",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0xb88339CB7199b77E23DB6E890353E22632Ba630f",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
    "payTo": "62A253YPATFNJCPRKID3FKD77MYJFNTVRYRP4B4JWG36EGLPY7UXFWGI7I",
    "asset": "31566704",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
    "asset": "XRP",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
    "asset": "524C555344000000000000000000000000000000",
    "amount": "0.1",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
    "amount": "100000000000000000",
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "condition": "aging",
          "lang": "en",
          "max_trials": "10",
          "recruiting_only": "true"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "search_summary": {
            "condition_searched": "rapamycin",
            "global_scope": "US, UK, Australia, Canada, Israel",
            "recruiting_now": 5,
            "total_found": 8
          },
          "trials": [
            {
              "intervention": "Rapamycin 5mg weekly",
              "nct_id": "NCT05483452",
              "phase": "Phase 2",
              "status": "RECRUITING",
              "title": "PEARL Trial: Rapamycin for Healthy Aging",
              "why_it_matters": "First major human RCT of rapamycin for longevity in healthy adults — results could transform longevity medicine"
            }
          ]
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "condition": {
                  "description": "Condition or intervention to search — e.g. \"aging\" | \"rapamycin\" | \"metformin\" | \"NMN\" | \"senolytics\" | \"caloric restriction\" | \"longevity\" | \"Alzheimer prevention\"",
                  "type": "string"
                },
                "lang": {
                  "description": "en | es | fr | de | ja | zh | ko | pt | ar | hi (default: en)",
                  "type": "string"
                },
                "max_trials": {
                  "description": "Trials to return, 1-20 (default 10). Pay-per-trial via the upto scheme: $0.04 + $0.003/trial (10 trials = $0.07); exact-scheme payments are flat $0.10.",
                  "type": "string"
                },
                "recruiting_only": {
                  "description": "\"true\" to show only actively recruiting trials (default: true)",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "builder-code": {
    "info": {
      "a": "bc_gxy6qn5p"
    },
    "schema": {
      "$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"
          },
          "type": "array"
        },
        "w": {
          "description": "Wallet builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        }
      },
      "type": "object"
    }
  },
  "eip2612GasSponsoring": {
    "info": {
      "description": "The facilitator accepts EIP-2612 gasless Permit to `Permit2` canonical contract.",
      "version": "1"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "amount": {
          "description": "The amount to approve (uint256). Typically MaxUint.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "asset": {
          "description": "The address of the ERC-20 token contract.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "deadline": {
          "description": "The timestamp at which the signature expires.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "from": {
          "description": "The address of the sender.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "nonce": {
          "description": "The current nonce of the sender.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "signature": {
          "description": "The 65-byte concatenated signature (r, s, v) as a hex string.",
          "pattern": "^0x[a-fA-F0-9]+$",
          "type": "string"
        },
        "spender": {
          "description": "The address of the spender (Canonical Permit2).",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "version": {
          "description": "Schema version identifier.",
          "pattern": "^[0-9]+(\\.[0-9]+)*$",
          "type": "string"
        }
      },
      "required": [
        "from",
        "asset",
        "spender",
        "amount",
        "nonce",
        "deadline",
        "signature",
        "version"
      ],
      "type": "object"
    }
  },
  "erc20ApprovalGasSponsoring": {
    "info": {
      "description": "The facilitator broadcasts a pre-signed ERC-20 approve() transaction to grant Permit2 allowance.",
      "version": "1"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "amount": {
          "description": "The amount approved (uint256). Always MaxUint256.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "asset": {
          "description": "The address of the ERC-20 token contract.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "from": {
          "description": "The address of the sender (token owner).",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "signedTransaction": {
          "description": "The RLP-encoded signed EIP-1559 transaction as a hex string.",
          "pattern": "^0x[a-fA-F0-9]+$",
          "type": "string"
        },
        "spender": {
          "description": "The address of the spender (Canonical Permit2).",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "version": {
          "description": "Schema version identifier.",
          "pattern": "^[0-9]+(\\.[0-9]+)*$",
          "type": "string"
        }
      },
      "required": [
        "from",
        "asset",
        "spender",
        "amount",
        "signedTransaction",
        "version"
      ],
      "type": "object"
    }
  }
}

Example shape — generated from the schema, not a captured live response

null

Examples

curl

curl "https://longevitypulse.theaslangroupllc.com/api/longevity/clinical-trials"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://longevitypulse.theaslangroupllc.com/api/longevity/clinical-trials");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://longevitypulse.theaslangroupllc.com/api/longevity/clinical-trials")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: longevitypulse.theaslangroupllc.com
Endpoint: https://longevitypulse.theaslangroupllc.com/api/longevity/clinical-trials
Machine-readable: /resources/5685.json