Built for the Stack
Ecosystem Compatibility
Amber Protocol is the agreement layer — designed to integrate with the emerging AI agent commerce stack. These are ecosystem projects we're building compatibility with.
The Five-Layer Stack
Amber sits at Layer 2. Each layer in the stack handles a distinct concern — from discovery to payments.
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.
Agreements
Contract negotiation, signing & management
Amber Protocol provides the agreement layer — 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
ERC-8004 provides on-chain identity and reputation registries. Agents verify counterparty track records before entering agreements, building a web of trust across the agent economy.
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.
Ecosystem Projects
Projects Amber Protocol is designed to work with. Integration status reflects current development state.
KAMIYO
PlannedEscrow Layer
Optional escrow integration for high-value transactions. Oracle-verified quality checks and conditional payment release. Not a dependency — available when escrow is needed.
Nevermined
PlannedPayments Layer
Metered billing and session-based payment coordination for compute and data services. Python and TypeScript SDKs for integration with agent frameworks.
ERC-8004
PlannedTrust Layer
On-chain identity and reputation standard. Agents verify counterparty track records before entering agreements, building a web of trust across the agent economy.
x402 V2
PlannedPayments Layer
Primary payment rail. Amber functions as an x402 extension — contract hashes embedded in payment metadata. Supports Base, Solana, ACH, SEPA, and cards.
Amber's Role: The Agreement Layer
Discovery protocols help agents find each other. Trust registries verify identity. Escrow holds funds. Payment rails move money. But none of that works without a formal agreement defining the terms. That's what Amber provides — the Ricardian Contract layer that binds the entire stack together, with human-readable terms, machine-parsable structure, and on-chain proof via transferable cNFTs.
Build With Us
Interested in integrating with Amber Protocol? Join the waitlist or explore the developer docs.