# Zero A2A Agent

**Canonical:** https://apis.io/apis/p0stman-com/zero-a2a-agent/  
**Provider:** p0stman — https://apis.io/providers/p0stman-com/  
**Base URL:** https://p0stman.com/api/agent  
**Documentation:** https://p0stman.com/what-is-a2a-protocol

Zero A2A Agent is one of 3 APIs that [p0stman](https://apis.io/providers/p0stman-com/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include A2A, AI Agents, JSON-RPC, and Booking. The published artifact set on APIs.io includes API documentation and authentication docs.

p0stman's agent-to-agent surface: an A2A agent card for "Zero" served at /.well-known/agent-card.json (and the legacy /.well-known/agent.json) on p0stman.com and www.p0stman.com, pointing at an anonymous JSON-RPC 2.0 task endpoint at https://p0stman.com/api/agent. Three skills - inquire (services, pricing, capabilities), portfolio (case studies by industry) and book (schedule a 30-minute discovery call with Paul Gosnell) - text/plain in and out, no streaming, push notifications or task history. The card is flavored against A2A 1.0.0 (no protocolVersion, pre-0.3 authentication.schemes).

## Machine-readable artifacts (6)

- **Documentation** — https://p0stman.com/agents.md
- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/p0stman-com/refs/heads/main/a2a/p0stman-com-a2a.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/p0stman-com/refs/heads/main/authentication/p0stman-com-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/p0stman-com/refs/heads/main/conventions/p0stman-com-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/p0stman-com/refs/heads/main/errors/p0stman-com-problem-types.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/p0stman-com/refs/heads/main/conformance/p0stman-com-conformance.yml

## Other p0stman APIs (2)

- [p0stman MCP Server](https://apis.io/apis/p0stman-com/p0stman-mcp-server/)
- [p0stman AI Context API](https://apis.io/apis/p0stman-com/p0stman-ai-context-api/)

## Tags

A2A, AI Agents, JSON-RPC, Booking

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/p0stman-com/zero-a2a-agent/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/p0stman-com/.