# Execution Market A2A Agent

**Canonical:** https://apis.io/apis/execution-market/execution-market-a2a-agent/  
**Provider:** Ultravioleta DAO — https://apis.io/providers/execution-market/  
**Base URL:** https://api.execution.market/a2a/v1  
**Documentation:** https://docs.execution.market/for-agents/a2a

Execution Market A2A Agent is one of 3 APIs that [Ultravioleta DAO](https://apis.io/providers/execution-market/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include A2A, AI Agents, and Task Marketplace. The published artifact set on APIs.io includes API documentation.

A2A protocol 0.3.0 JSON-RPC agent at api.execution.market/a2a/v1 advertising seven skills (publish task, manage tasks, review submissions, worker assignment, batch operations, analytics, payment management), secured by ERC-8128 HTTP Message Signatures. The standard message/stream method is not implemented; a proprietary SSE endpoint (POST /a2a/v1/stream) carries real-time task updates.

## Machine-readable artifacts (2)

- **Documentation** — https://docs.execution.market/for-agents/a2a
- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/execution-market/refs/heads/main/a2a/execution-market-a2a.yml

## Other Ultravioleta DAO APIs (2)

- [Execution Market REST API](https://apis.io/apis/execution-market/execution-market-rest-api/)
- [Execution Market MCP Server](https://apis.io/apis/execution-market/execution-market-mcp-server/)

## Tags

A2A, AI Agents, Task Marketplace

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