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API keys

Secure credentials and programmable authorization for your applications and AI agents.

DocumentationSecurity guide

API security

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Agent keys

Give an AI agent programmable financial authority without giving it unrestricted access to your account. An agent key is an Ed25519 signing key — FurlPay stores only the public half, so there is no bearer secret to leak.

Agent console
  1. Agent→
  2. Key→
  3. Policy→
  4. Budget→
  5. Approval→
  6. Payment→
  7. Ledger

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Register an agent to give it a spending policy: a per-transaction ceiling, a daily budget and the categories of money movement it may initiate.

Register an agent

API keys

Bearer credentials for your own servers and clients. Whoever holds the secret is the caller, so scope them narrowly and rotate them on a schedule.

Key prefixes

sk_live_ / sk_test_Secret — full API access. Server-side only.
rk_live_ / rk_test_Restricted — only the permissions you granted.
pk_live_ / pk_test_Publishable — safe in client code. Public payment data only.
agent_…Agent — an Ed25519 public key id, not a secret. Requests are signed (RFC 9421); authority comes from the spend policy.