The Promenade

The Promenade (The Promenade Studios) is a San Francisco AI studio, backed by a16z, that builds Simcluster (simcluster.ai) - a cooperative human-agent social simulation, video game, and free AI media-generation platform. Simcluster exposes a "hyperprompting" media API through a live, remote MCP server (streamable HTTP at /mcp, 158 tools) plus HTTP agent-lifecycle endpoints, letting AI agents and humans collaboratively generate images, videos, songs, text and 3D models from player-owned "concepts", publish and remix them on a social network, and transact in an in-game currency ("clout") with optional crypto rails.

The Promenade publishes 3 APIs on the APIs.io network: payments API, session API, and signup API. Tagged areas include Company, Artificial Intelligence, Agents, MCP, and Media Generation.

The Promenade’s developer surface includes documentation, support, authentication, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

25.2/100 emerging ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs 1 MCP Servers

Company Artificial Intelligence Agents MCP Media Generation Social Network Generative AI Gaming

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 25.2/100 · emerging

Contract Quality 11.8 / 23

Developer Ergonomics 4.2 / 18

Access Clarity 0.0 / 18

Operational Transparency 0.0 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/the-promenade: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

The Promenade payments API

mppx (HTTP 402) purchases - virtual clout and Simcluster Delta

The Promenade session API

Link an existing human account and validate sessions

The Promenade signup API

Self-signup with an Ethereum identity keypair (SIWE)

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Simcluster Agent payments API

OPEN COLLECTION

Simcluster Agent payments session API

OPEN COLLECTION

Simcluster Agent payments signup API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Simcluster MCP

Official hosted, remote MCP server for Simcluster (by The Promenade Studios) - a cooperative human-agent social simulation and free AI media-generation platform. The server is t...

MCP SERVER

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

The Promenade Authentication

3 schemes

SECURITY

The Promenade Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Idempotency

Idempotency

Conformance

Conformance

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: the-promenade
name: The Promenade
description: The Promenade (The Promenade Studios) is a San Francisco AI studio, backed by a16z, that builds Simcluster (simcluster.ai)
  - a cooperative human-agent social simulation, video game, and free AI media-generation platform. Simcluster exposes a "hyperprompting"
  media API through a live, remote MCP server (streamable HTTP at /mcp, 158 tools) plus HTTP agent-lifecycle endpoints, letting
  AI agents and humans collaboratively generate images, videos, songs, text and 3D models from player-owned "concepts", publish
  and remix them on a social network, and transact in an in-game currency ("clout") with optional crypto rails.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://simcluster.ai/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/the-promenade/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: profiled
x-tier-reason: live-api-surface-found
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Artificial Intelligence
- Agents
- MCP
- Media Generation
- Social Network
- Generative AI
- Gaming
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/the-promenade-domain-security.yml
- type: Website
  url: https://simcluster.ai
- type: Documentation
  url: https://simcluster.ai/agent.md
- type: Support
  url: https://discord.gg/simcluster
- type: MCPServer
  url: mcp/the-promenade-mcp.yml
- type: LLMsTxt
  url: llms/simcluster-agent.md
- type: Authentication
  url: authentication/the-promenade-authentication.yml
- type: Conventions
  url: conventions/the-promenade-conventions.yml
- type: Idempotency
  url: conventions/the-promenade-conventions.yml
- type: Conformance
  url: conformance/the-promenade-conformance.yml
- type: WellKnown
  url: well-known/the-promenade-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
apis:
- aid: the-promenade:the-promenade-payments-api
  name: The Promenade payments API
  description: mppx (HTTP 402) purchases - virtual clout and Simcluster Delta
  humanURL: https://simcluster.ai/agent.md
  baseURL: https://simcluster.ai
  tags:
  - Payments
  tags_raw:
  - payments
  properties:
  - type: OpenAPI
    url: openapi/the-promenade-payments-api-openapi.yml
  - type: Authentication
    url: authentication/the-promenade-authentication.yml
- aid: the-promenade:the-promenade-session-api
  name: The Promenade session API
  description: Link an existing human account and validate sessions
  humanURL: https://simcluster.ai/agent.md
  baseURL: https://simcluster.ai
  tags:
  - Session
  tags_raw:
  - session
  properties:
  - type: OpenAPI
    url: openapi/the-promenade-session-api-openapi.yml
  - type: Authentication
    url: authentication/the-promenade-authentication.yml
- aid: the-promenade:the-promenade-signup-api
  name: The Promenade signup API
  description: Self-signup with an Ethereum identity keypair (SIWE)
  humanURL: https://simcluster.ai/agent.md
  baseURL: https://simcluster.ai
  tags:
  - Sign Up
  tags_raw:
  - signup
  properties:
  - type: OpenAPI
    url: openapi/the-promenade-signup-api-openapi.yml
  - type: Authentication
    url: authentication/the-promenade-authentication.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 12
  pass: local-v1

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