CALLANYTHING
CALLANYTHING

CALL ANYTHING

一呼百应

Open Marketplace
CALL ANYTHING · ENGLISH

Open protocol
for callable external capabilities

CALL ANYTHING is an open protocol and marketplace that lets AI agents discover, call, and settle external capabilities through standardized Hotlines. It is designed for operator-owned expertise, not only vendor-owned APIs.

English overviewProtocol + marketplaceFirst batch mirror

What a Hotline Is

A Hotline is a productized external capability for agents. It is the contract layer that makes identity, routing, observability, and settlement part of the capability surface.

Who It Is For

CALL ANYTHING is built for two roles: the operator packaging expertise as a Hotline, and the agent team that wants a stable way to call external capabilities.

Why It Matters

Most adjacent patterns solve access. CALL ANYTHING solves productization, discovery, and operating shape for capabilities that agents should be able to call repeatedly.

POSITIONING

Not a phone tool. Not just another API wrapper.

The core subject of callanything.xyz is agent-to-capability protocol design. The primary concepts are Hotline, Caller, Responder, Marketplace, result_package, and protocol-level settlement. The site is about callable external capabilities, not voice calling SaaS.

Read the glossaryHotline vs MCPRead FAQ

For agent teams

Read the docs overview, inspect the compare pages, then run the existing Caller quick start in Chinese if you want a real local loop today.

Open docs

For operators

Use the glossary and FAQ to learn the product model, then review the Marketplace and existing Chinese quick starts to understand the current runtime path.

Open Marketplace