# DefaultBench A2A API

**Canonical:** https://apis.io/apis/defaultbench-com/defaultbench-com-a2a-api/  
**Provider:** DefaultBench — https://apis.io/providers/defaultbench-com/  
**Base URL:** https://defaultbench.com  
**Documentation:** https://defaultbench.com/docs

DefaultBench A2A API is one of 12 APIs that [DefaultBench](https://apis.io/providers/defaultbench-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include A2A. The published artifact set on APIs.io includes an OpenAPI specification.

A2A 1.0 HTTP+JSON binding.

## Operations (1)

| Method | Path | Summary |
|---|---|---|
| POST | `/a2a/message:send` | Send a message through the A2A 1.0 HTTP+JSON binding |

## Machine-readable artifacts (2)

- **OpenAPI** — https://artifacts.apis.io/defaultbench-com/openapi/defaultbench-com-a2a-api-openapi.yml
- **APIsJSON** — https://artifacts.apis.io/defaultbench-com/apis.yml

## Other DefaultBench APIs (11)

- [DefaultBench Attribution API](https://apis.io/apis/defaultbench-com/defaultbench-com-attribution-api/)
- [DefaultBench Bidding API](https://apis.io/apis/defaultbench-com/defaultbench-com-bidding-api/)
- [DefaultBench Discovery API](https://apis.io/apis/defaultbench-com/defaultbench-com-discovery-api/)
- [DefaultBench Evidence API](https://apis.io/apis/defaultbench-com/defaultbench-com-evidence-api/)
- [DefaultBench Market Intelligence API](https://apis.io/apis/defaultbench-com/defaultbench-com-market-intelligence-api/)
- [DefaultBench MCP API](https://apis.io/apis/defaultbench-com/defaultbench-com-mcp-api/)
- [DefaultBench Operations API](https://apis.io/apis/defaultbench-com/defaultbench-com-operations-api/)
- [DefaultBench Protocol discovery API](https://apis.io/apis/defaultbench-com/defaultbench-com-protocol-discovery-api/)
- [DefaultBench Rankings API](https://apis.io/apis/defaultbench-com/defaultbench-com-rankings-api/)
- [DefaultBench Supplier activation API](https://apis.io/apis/defaultbench-com/defaultbench-com-supplier-activation-api/)
- [DefaultBench Transparency API](https://apis.io/apis/defaultbench-com/defaultbench-com-transparency-api/)

## Tags

A2A

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