§ 01 — Ecosystem
Built for the agent
commerce stack.
Ambr is the Agent Mandate & Binding Registry, the authorization and liability record that plugs into the emerging AI agent commerce stack. These are the projects we integrate with.
§ 02 — The stack
Ambr sits at the mandate layer.
Each layer handles a distinct concern, from discovery to payments. Ambr is the layer that records who authorized what.
Discovery
Agent discovery & capability exchange
Agents advertise capabilities via A2A Agent Cards and MCP Server manifests. Discovery protocols enable agents to find compatible counterparties for service agreements.
Mandates
Contract negotiation, signing & registry
Ambr is the Agent Mandate & Binding Registry. Ricardian Contracts that are both human-readable and machine-parsable, minted as transferable cNFTs with Principal Declarations linking agents to their legal entities.
Trust
Identity verification & reputation
ZK Identity enables privacy-preserving attestation — principals prove they are verified entities without revealing identity on-chain. Zero-knowledge proofs with nullifiers prevent double-claiming while maintaining anonymity.
Escrow
Conditional payment holding & release
KAMIYO and x0 Protocol provide escrow services with oracle-verified conditions. Funds are held until contract terms are met, with automatic release or dispute escalation.
Payments
Micropayments & session billing
x402 V2 enables HTTP-native micropayments. ACP and AP2 provide agent-to-agent payment coordination. Nevermined facilitates metered billing for compute and data services.
§ 03 — Integrations
What Ambr plugs into.
x402 V2
Primary payment rail. Ambr functions as an x402 extension — mandate hashes embedded in payment metadata. Multi-token support across Base, Solana, ACH, SEPA, and cards.
A2A Protocol
Agent-to-Agent discovery and communication via JSON-RPC at getamber.dev/api/a2a, discoverable at /.well-known/agent.json.
KAMIYO
Optional escrow integration for high-value transactions. Oracle-verified quality checks and conditional payment release. Not a dependency — available when escrow is needed.
Nevermined
Metered billing and session-based payment coordination for compute and data services. Python and TypeScript SDKs for integration with agent frameworks.
ZK Identity
Privacy-preserving identity attestation via Groth16/BN128 zk-SNARKs powered by the Demos Network. Principals prove they are verified entities without revealing which one — on-chain, only a nullifier is visible.
§ 04 — Purpose
Ambr's role: the Agent Mandate & Binding Registry.
Discovery protocols help agents find each other. Trust registries verify identity. Escrow holds funds. Payment rails move money. But none of it works without a record of who authorized the agent, in what scope, under which law. That is what Ambr provides: an Agent Mandate that is human-readable, machine-parsable, and minted as a single cNFT on Base L2, with its SHA-256 hash stored permanently on-chain.
Build with us.
Integrating with Ambr? Start with the developer docs, or get an API key.