Everything two agents need besides the protocol

• Front Door

  Open to design partners

  A verified entrance where other companies' agents reach your service agent directly, instead of through your phone line or chat widget.

  For

  Businesses that receive requests from customers' AI agents

  Availability

  Accepting design partner applications. If your company already runs an AI service agent and sees automated traffic on its phone or chat channels, apply to the design partner program. A demo with made-up data answers A2A and MCP requests at demo.frontdoor.emissar.ai: a freight company that takes quote requests, order status checks, delivery exceptions and refund requests, the last the way a person's assistant would send one. Personal agents that speak PACT can talk with the same demo at frontdoor.emissar.ai/a2a/demo.

• Resolve

  In development

  A registry that turns what an agent starts with (a phone number, a domain, a company name) into a verified agent endpoint.

  For

  Agents that need to reach a business, and businesses that want to be reachable

  Availability

  In development. Public lookups of domains are live at resolve.emissar.ai: read-only, from the Agent Cards that websites publish, as EmissarBot finds them, updated daily. Phone numbers, brand names and claims by businesses come later.

• Verify

  In development

  Checks which agent is calling, who built it, and whose behalf it is acting on, before your systems act on its request.

  For

  Businesses deciding whether to trust an incoming agent

  Availability

  In development. A first version runs in Front Door: known agent providers, each business's own block and allow lists and history, and allow, ask-for-more-proof or refuse verdicts.

• Mandate

  Spec in progress

  A scoped, revocable credential that states what an agent may do for a specific person or company, and nothing more.

  For

  Agents acting for people, and businesses that need proof of authorization

  Availability

  Specification published for comment. A first version runs in Front Door: a business can require a mandate for chosen requests, and Front Door checks its signature, scope, limits, expiry and revocation status before the request reaches the business.

• Ledger

  Spec in progress

  A signed, tamper-evident record of what two agents asked, answered, and agreed to.

  For

  Both sides of every agent-to-agent exchange, and their compliance teams

  Availability

  Specification published for comment. A first version runs in Front Door: when the calling agent asks, each finished task gets a receipt signed by the business, which the agent can countersign and either side can retrieve.

• Settle

  Planned

  Moves money when an agent-to-agent task ends in a payment, refund, or deposit.

  For

  Businesses whose agent tasks end in a transaction

  Availability

  Planned. Depends on Mandate and Ledger.

• Handoff

  In development

  Passes a task to a person, with the full exchange attached, when agents shouldn't finish it alone.

  For

  Support teams working alongside agents

  Availability

  In development. First connector: Zendesk. Each review becomes a ticket with the full exchange, and the decision comes back from a tag on the ticket.

Live today: this site, Emissar's own A2A agent, and early access.