generated: '2026-09-19'
method: searched
status: published
source: https://vouchspec.plyrium.com/api/vouchspec/v1/discovery
sources:
- https://vouchspec.plyrium.com/api/vouchspec/v1/discovery (mcp block - transport, path, protocol_version, tools)
- https://vouchspec.plyrium.com/llms.txt ("Remote MCP" entry)
- https://registry.modelcontextprotocol.io/v0.1/servers?search=io.github.mordiaky%2Fvouchspec (official MCP Registry, io.github.mordiaky/vouchspec v0.3.0 isLatest, status active)
- https://raw.githubusercontent.com/mordiaky/vouchspec/main/server.json (registry manifest, remotes[0].url)
- https://agent-tools.cloud/api/v1/mcp/servers/vouchspec-agent-skill-evidence (third-party listing, HTTP 200)
deployment:
  mode: remote
  endpoint: https://vouchspec.plyrium.com/api/vouchspec/v1/mcp
  install: null
  package: null
  auth: none
  verified: probed
  probe:
    fetched: '2026-09-19'
    initialize: >-
      200 - protocolVersion 2025-11-25, serverInfo {name: vouchspec-agent-skill-evidence, title: VouchSpec Agent
      Skill Evidence, version: 0.2.0}, capabilities.tools.listChanged true, instructions "Return VouchSpec's public
      machine discovery contract. This server is read-only and does not accept artifacts, fetch repositories,
      settle payments, or expose private data."
    tools_list: 200 - one tool returned with a full inputSchema (below); no auth challenge, response header x-plyrium-auth-bypass anonymous-public
    tools_call: 200 - get_vouchspec_discovery returned structuredContent identical to /api/vouchspec/v1/discovery; no side effect
    response_mode: stateless JSON (discovery says response_mode stateless_json); Accept application/json, text/event-stream honoured with a plain JSON body
  note: >-
    The repository also contains a stdio catalog MCP (src/capabilityproof/catalog_mcp.py, CHANGELOG 0.2.0 "read-only
    loopback REST and stdio MCP catalog retrieval") but publishes no install command and the package is not on
    PyPI (pypi.org/pypi/capabilityproof 404, pypi.org/pypi/vouchspec 404), so mode is recorded as remote only.
    The MCP Registry's earlier v0.2.0 entry pointed the remote at vouchspec-sandbox.plyrium.com; v0.3.0 (isLatest)
    moved it to the live host recorded here.
server:
  name: vouchspec-agent-skill-evidence
  title: VouchSpec Agent Skill Evidence
  version: 0.2.0
  transport: streamable-http
  protocol_version: '2025-11-25'
  url: https://vouchspec.plyrium.com/api/vouchspec/v1/mcp
  registry_name: io.github.mordiaky/vouchspec
  registry_version: 0.3.0
  anonymous_read_only: true
  paid_execution_available: false
authorship: provider
auth:
  methods: [none]
  note: No OAuth, API key or protected-resource metadata; the server is anonymous by design and exposes only the discovery contract.
tool_count: 1
tools:
- name: get_vouchspec_discovery
  title: Get VouchSpec discovery
  category: discovery
  description: Return current agent-only pricing, x402 payment, request, receipt, and status instructions.
  inputSchema:
    type: object
    properties: {}
    additionalProperties: false
    $schema: http://json-schema.org/draft-07/schema#
  annotations:
    readOnlyHint: true
    destructiveHint: false
    idempotentHint: true
    openWorldHint: false
  execution:
    taskSupport: forbidden
  source_operation: openapi/plyrium-com-vouchspec-openapi.yml#getVouchSpecDiscovery
  observed_output: structuredContent = the discovery document (schema_version 1.3.0) plus a text part stating no payment or validation was performed