Etch

Etch Auditor API

Public verification surface: pinnable public keys, OSS-format manifest, browser chain-integrity endpoint.

Documentation GitHub OpenAPI

Operations 4

GET /auditor/{slug}/oss-manifest.json Stream the OSS etch-verify manifest for a project's chain (offline verify path) #

GET /auditor/{slug}/chain-check.json Return recent hash-chain entries for the browser-side integrity widget #

GET /projects/{project_id}/audit-log/public-keys Pinnable public keys for offline verification (Ed25519 + SLH-DSA) #

GET /projects/{project_id}/audit-log/dump/manifest Signed manifest header for the sealed audit-log SQLite dump #

Specifications

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OpenAPI

https://artifacts.apis.io/etch-systems/openapi/etch-systems-auditor-api-openapi.yml

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https://artifacts.apis.io/etch-systems/apis.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Etch public Auditor API
  description: Signed audit chain for AI agent decisions, offline-verifiable against pinned public keys. Every event is signed with a hybrid Ed25519 + FIPS 205 SLH-DSA-SHA2-128f envelope, Merkle-chained into an epoch, and epoch-anchored on Sigstore Rekor + Bitcoin OpenTimestamps. This document covers only the unauthenticated integration surface; the admin API requires bearer authentication and is not published.
  version: 0.2.0
  license:
    name: BUSL-1.1
    url: https://spdx.org/licenses/BUSL-1.1.html
  contact:
    name: Etch
    url: https://etch.systems
    email: support@etch.systems
servers:
- url: https://etch.systems
  description: Production
tags:
- name: Auditor
  description: 'Public verification surface: pinnable public keys, OSS-format manifest, browser chain-integrity endpoint.'
paths:
  /auditor/{slug}/oss-manifest.json:
    get:
      summary: Stream the OSS etch-verify manifest for a project's chain (offline verify path)
      operationId: auditorOssManifest
      tags:
      - Auditor
      parameters:
      - name: slug
        in: path
        required: true
        schema:
          type: string
          pattern: ^[a-f0-9]{32}$
      responses:
        '200':
          description: OSS v1 manifest; consume with etch-verify (`pip install world-model-mcp && etch-verify manifest.json`)
  /auditor/{slug}/chain-check.json:
    get:
      summary: Return recent hash-chain entries for the browser-side integrity widget
      operationId: auditorChainCheck
      tags:
      - Auditor
      parameters:
      - name: slug
        in: path
        required: true
        schema:
          type: string
          pattern: ^[a-f0-9]{32}$
      responses:
        '200':
          description: OK
  /projects/{project_id}/audit-log/public-keys:
    get:
      summary: Pinnable public keys for offline verification (Ed25519 + SLH-DSA)
      operationId: auditLogPublicKeys
      tags:
      - Auditor
      parameters:
      - name: project_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: OK
  /projects/{project_id}/audit-log/dump/manifest:
    get:
      summary: Signed manifest header for the sealed audit-log SQLite dump
      operationId: auditLogDumpManifest
      tags:
      - Auditor
      parameters:
      - name: project_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: OK
externalDocs:
  description: Full documentation
  url: https://etch.systems/docs