generated: 2026-07-21
method: derived
source: verified live (MCP initialize) + https://simcluster.ai/agent.md
type: Conformance
provider: The Promenade Studios
api: Simcluster
note: >-
  Assertions about cross-cutting standards the Simcluster surface implements. "conforms"
  reflects observed/documented behavior, not a formal certification.
standards:
  - id: mcp
    name: Model Context Protocol (streamable HTTP)
    conforms: true
    evidence: >-
      Live server at https://simcluster.ai/mcp answered a JSON-RPC 2.0 initialize with
      protocolVersion 2025-06-18, serverInfo simcluster-mcp/0.1.0, and tools.listChanged
      capability; tools/list returned 158 tools (verified 2026-07-21).
  - id: json-rpc-2.0
    name: JSON-RPC 2.0
    conforms: true
    evidence: MCP transport uses JSON-RPC 2.0 request/response envelopes (verified).
  - id: siwe
    name: Sign-In with Ethereum (SIWE / EIP-191 personal_sign)
    conforms: true
    evidence: >-
      Documented self-signup signs an exact SIWE message with an Ethereum identity keypair
      via EIP-191 personal_sign; POST /api/agent/signup/verify checks the signature.
  - id: http-402-payment
    name: HTTP 402 Payment Required (mppx challenge-response)
    conforms: true
    evidence: >-
      Enablement, clout purchase, and Delta subscription use the mppx 402 challenge-response
      flow (Tempo pathUSD / Arbitrum USDC) documented in agent.md.
  - id: oauth2
    name: OAuth 2.0
    conforms: false
    evidence: No OAuth2 endpoints; auth is bearer + SIWE. No /.well-known/oauth-authorization-server (404).
  - id: oidc
    name: OpenID Connect
    conforms: false
    evidence: /.well-known/openid-configuration returned 404.
  - id: rfc9457
    name: RFC 9457 Problem Details
    conforms: unknown
    evidence: Error envelope shape not documented in agent.md; not observed.