openapi: 3.2.0
info:
  title: LVL LTD Agent Skill Market Esp API
  version: 1.6.0
  description: 'ESP (Evaluate→Settle→Prove) + x402 skill marketplace. Free eval always before settlement. Success only via /api/proof. Source: catalog.json.'
  contact:
    name: LVL LTD CO
    url: https://lvlltd.com
servers:
- url: https://lvlltd.com
tags:
- name: Esp
paths:
  /api/esp:
    get:
      summary: ESP protocol — Evaluate → Settle → Prove
      description: 'Without skill: protocol root. With skill: full cycle. phase=evaluate|settle|prove for slices. Free evaluate never requires payment.'
      parameters:
      - name: skill
        in: query
        schema:
          type: string
      - name: phase
        in: query
        schema:
          type: string
          enum:
          - evaluate
          - settle
          - prove
          - cycle
      - name: tx
        in: query
        schema:
          type: string
        description: Optional txHash when phase=prove
      responses:
        '200':
          description: ESP root, cycle, or phase slice
        '400':
          description: Missing skill or unknown phase
      tags:
      - Esp
      operationId: getApiEsp
      x-operation-id-source: derived
x-lvl-skill-count: 250
x-lvl-source-of-truth: catalog.json