# Fianza

> Revenue-underwritten, uncollateralized USDC credit for AI agents on Stellar.

## Docs

- [Architecture](https://docs.fianza.space/architecture.md): How the contracts, backend, SDK, and frontend fit together.
- [Contract addresses](https://docs.fianza.space/contracts.md): Deployed Soroban contract IDs on Stellar testnet, and why score_registry never moves.
- [How the credit engine works](https://docs.fianza.space/credit-engine.md): A ground-truth technical walkthrough of the whole underwriting pipeline — revenue discovery, the Sybil tracker, scoring, and the on-chain lending vault.
- [Getting started](https://docs.fianza.space/index.md): Revenue-underwritten, uncollateralized USDC credit for AI agents on Stellar.
- [Onboarding kit](https://docs.fianza.space/onboarding-kit.md): How a real, external AI agent gets a funded testnet Stellar account and runs its first credit loop against Fianza.
- [Roadmap](https://docs.fianza.space/roadmap.md): What's shipped and live on testnet, what's in progress, and the honest gap analysis.
- [Scoring methodology](https://docs.fianza.space/scoring-methodology.md): The composite revenue-coverage score, in brief.
- [SDK reference (JavaScript / TypeScript)](https://docs.fianza.space/sdk-reference.md): The @fianza/agent-sdk API — construct an agent, underwrite, borrow, repay, and pay-with-credit.
- [SDK reference (Python)](https://docs.fianza.space/sdk-reference-python.md): The fianza-agent-sdk Python API — the same revenue-underwritten credit lifecycle, pip-installable.
- [Sybil / independence model](https://docs.fianza.space/sybil-model.md): Why independence is the moat — the threat model, the v1 scoring model, and what it does not yet solve.
- [What & why](https://docs.fianza.space/what-and-why.md): The problem Fianza solves, the thesis, and why Stellar.