# subagentspec.com — the a2a.terse.v1 spec primitive

> A durable, D1-backed catalog of the a2a.terse.v1 YAML interchange style: style.yaml's 4 structural elements (inputs/outputs/steps/eval self-eval tail) and rubric.md's 7 grading criteria (structural_fidelity, terseness, io_contract, self_eval_tail, cross_platform, determinism, traceability). Narrow in scope by design — the broad A2A/MCP/e2m protocol overview lives on subagentprotocols.com.

## API
- GET /api/criteria — list spec_elements rows (structural elements + rubric criteria)
- GET /api/criteria?kind=structural_element — just the 4 structural elements
- GET /api/criteria?kind=rubric_criterion — just the 7 rubric criteria
- GET /api/criteria/:id — a single row as JSON

## Family
This site is one of the Cloudflare Workers in the subagent*.com family. For the
live, machine-readable directory of every sibling domain, Cloudflare zone ID,
and worker binding, fetch:
https://subagentsubdomains.com/api/dns-zones

For a unified catalog of every API route across every primitive in the family:
https://subagentapi.com/api/catalog

For the broad A2A/MCP/e2m protocol landscape (this site covers only the terse
YAML house style within it):
https://subagentprotocols.com