SanestlyPay

open source

Give AI agents spending power. Keep control.

What it does

SanestlyPay sits between your agent and the money. Every payment request is evaluated against policy before a provider is called: ALLOW, DENY, or REQUIRES_APPROVAL. Approvals are single-use, budgets are reserved atomically, and ambiguous provider outcomes are reconciled - never guessed.

The public Playground is a credential-free mock sandbox with nine scenarios and an audit timeline. The same gateway code runs locally with one command; SDKs wrap one OpenAPI contract so behavior stays identical across languages.

What is inside

  • FastAPI gateway with HMAC signing, idempotency, and scoped keys (agent / approver / operator)
  • Atomic budget reservations and single-use approvals - no self-approval, no double-settle
  • Interactive mock Playground: nine scenarios, visitor isolation, audit timeline
  • SDKs for Python, Node.js, PHP, Ruby, Rust, Java, and Swift
  • MCP server plus LangChain, OpenAI, CrewAI, AutoGen, and LlamaIndex examples
  • Mock-first: real providers (Stripe Issuing, x402) activate only with your credentials

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