Developers

Wallets, policies and payments — by API.

Build agent-native products on top of Solana with privacy and policy as first-class primitives.

Core endpoints

POST/v1/wallets

Create a non-custodial user wallet

POST/v1/agent_wallets

Issue a wallet for an AI agent

POST/v1/transfers

Send USDC, optionally confidential

GET/v1/transactions

Paginated ledger with policy + disclosure data

POST/v1/policies

Create or update spending policy

POST/v1/approvals/:id/decide

Approve or reject a pending action

POST/v1/disclosures

Generate a selective disclosure bundle

POST/v1/x402/charge

Issue a 402 Payment Required challenge

POST/v1/webhooks

x402 in one request

HTTP/1.1 402 Payment Required
X-BSF-Pay: solana:USDC?amount=0.05&to=...&memo=req_abc
X-BSF-Settle: https://api.blacksheep.fi/v1/x402/verify

Webhook event

{
  "type": "transfer.settled",
  "data": {
    "id": "tx_01HX...",
    "agent_wallet_id": "agw_research",
    "amount_visible": false,
    "policy_id": "pol_01...",
    "status": "settled"
  }
}

Pasture sandbox

Every API key ships with a sandbox environment seeded with sample agents, policies and confidential transfer traffic so you can build before you settle.