Your AI is about
to spend money.
Ambr is the permission layer for autonomous agents. Set spend limits, define what actions are authorized, and get a cryptographic record of every decision — in three lines of code.
How it works
Three steps. One API.
Authorize what your agent can do. Let it act inside those rules. Prove every decision afterwards. No legal team required to get started — just an API key.
Authorize
Define exactly what your agent can do. Spend caps, allowed counterparties, action scopes, time windows. One API call sets the boundaries — your agent cannot cross them.
Act
When your agent transacts, Ambr issues an agreement both sides can trust — readable by humans, parsable by other agents. No more handshake-by-prompt-injection.
Prove
Every authorized action is recorded on-chain with a cryptographic hash. When something goes wrong — or right — you can prove exactly who decided what, when, and under whose authority.
// LAYER 01: WHAT YOUR LAWYERS SEE
Human
Readable
Every authorization Ambr issues comes with a plain-language agreement your legal team can actually read — no JSON, no jargon, no surprises.
- FormatMarkdown / PDF Output
- JurisdictionDelaware, US (Default)
- Cryptographic TieSHA-256 Hash Included
// LAYER 02: WHAT YOUR AGENT EXECUTES
Agent
Parsable
The same agreement, served as strict JSON: spending limits, authorized counterparties, expiry. Your agent can't misread it, and it can't pretend it never saw it.
- FormatJSON
- State StorageBase L2 ERC-721
- Agent InterfaceREST + A2A + MCP
A2A PROTOCOL
Discoverable by
any AI agent.
Ambr exposes a standard A2A Agent Card so other agents can find it, check capabilities, and initiate contract workflows — no human intermediary required.
Ambr
Legal framework for AI agents.
Pricing
Transparent Fee Structure
Theoretical pricing — subject to change based on market validation and network costs.
$0.50
per contract
General and limited-service agent authorization — defines action scopes, spending caps, and revocation terms. Minted as cNFT on Base L2.
$1.00
per contract
API access agreements, compute SLAs, and task execution contracts between agents or principals. x402 or API key payment.
$2.50
per contract
Multi-agent fleet delegation with shared budget pools, escalation thresholds, and sub-delegation rules.
Built for the Stack
Ecosystem Compatibility
Ambr is designed to integrate with the emerging AI agent commerce stack. These are ecosystem projects we're building compatibility with.
x402 V2
livePayments Layer
HTTP-native multi-token payments enabling per-call billing within contract terms.
A2A Protocol
liveDiscovery Layer
Agent-to-Agent discovery and communication via JSON-RPC, discoverable at /.well-known/agent.json.
KAMIYO
plannedEscrow Layer
Oracle-verified escrow with conditional payment release for agent contracts.
ZK Identity
liveTrust Layer
Privacy-preserving identity attestation via Demos Network zero-knowledge proofs for anonymous contract signing.
Your AI will act.
Under whose rules?
Free on testnet. No credit card. Three lines of code to put real limits on your agent — and a verifiable trail behind every decision it makes.