Active Membranes

aid: active-membranes
name: Active Membranes
description: 'Active Membranes is a California water-technology company, founded in 2022 out of research at the UCLA Samueli
  School of Engineering, that builds electrically conductive "electro-active" reverse-osmosis membranes for desalination and
  water reuse. Where a conventional RO membrane filters passively and is cleaned after it fouls, Active Membranes embeds conductive
  material in the membrane''s polymer matrix and uses a control unit it calls the Active Box to apply a tunable low electrical
  potential at the membrane surface, electrostatically repelling scale-forming ions and charged organic foulants in real time.
  The modules ship in the standard 8-inch by 40-inch spiral-wound format so they retrofit into existing pressure vessels,
  and are aimed at seawater and brackish desalination, produced-water and industrial reuse. The company reports field results
  including roughly 48% less irreversible fouling in produced-water reuse, up to 70% longer cleaning cycles in brackish water,
  and a Ventura County study citing about 57% lower cost and 64% less footprint. It has raised roughly $3.24M in seed funding
  from Natural Ventures, Echo River Capital and Pacifica Water Solutions, won the 2023 Global Water Summit Water Technology
  Idol award, and was selected as a Qualified Team in the XPRIZE Water Scarcity competition. Active Membranes sells capital
  equipment, not software: it operates no developer program, publishes no OpenAPI, GraphQL or SDK, and lists no pricing. It
  does, however, serve two machine-readable surfaces from its own hostname — a substantial hand-written /llms.txt, and a live,
  unauthenticated Model Context Protocol endpoint at /_api/mcp exposing nine tools over the public site content. Both are
  Wix platform features the company chose to enable and advertise rather than first-party engineering.'
url: https://raw.githubusercontent.com/api-evangelist/active-membranes/refs/heads/main/apis.yml
image: https://static.wixstatic.com/media/dd52de_d31c0c0159fe4ea68318db941a61b17f~mv2.png/v1/fill/w_192,h_192,lg_1,usm_0.66_1.00_0.01/dd52de_d31c0c0159fe4ea68318db941a61b17f~mv2.png
position: Producing
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: platform-mcp-and-llms-txt-only-no-developer-program
specificationVersion: '0.20'
created: '2026-09-06'
modified: '2026-09-06'
tags:
- Company
- Water
- Water Technology
- Desalination
- Reverse Osmosis
- Membranes
- Cleantech
- Sustainability
- Industrial
- Hardware
- MCP
- Agents
apis:
- aid: active-membranes-site-mcp
  name: Active Membranes Site MCP Server
  description: 'A live, unauthenticated Model Context Protocol endpoint served from Active Membranes'' own hostname at https://www.activemembrane.com/_api/mcp
    and advertised by the company in its own llms.txt. An anonymous JSON-RPC tools/list returns HTTP 200 and nine tools with
    full JSON Schema inputs: GetBusinessDetails, SearchInSite, SearchSiteApiDocs, BrowseWixRESTDocsMenu, ReadFullDocsArticle,
    ReadFullDocsMethodSchema, GenerateVisitorToken, CallWixSiteAPI and ExecuteWixAPI. This is the Wix Site MCP runtime rather
    than a server the company wrote — the tools and schemas are Wix''s, and GetBusinessDetails reports the Blog app as the
    only installed business solution, so what an agent can actually reach is the public site and its blog posts. It is recorded
    because it is real, reachable, first-party-hosted and deliberately advertised. Active Membranes publishes no other API
    of any kind.'
  humanURL: https://www.activemembrane.com/
  baseURL: https://www.activemembrane.com/_api/mcp
  image: https://static.wixstatic.com/media/dd52de_d31c0c0159fe4ea68318db941a61b17f~mv2.png/v1/fill/w_192,h_192,lg_1,usm_0.66_1.00_0.01/dd52de_d31c0c0159fe4ea68318db941a61b17f~mv2.png
  tags:
  - MCP
  - Agents
  - Site Content
  - Water Technology
  properties:
  - type: MCPServer
    url: mcp/active-membranes-mcp.yml
  - type: Authentication
    url: authentication/active-membranes-authentication.yml
  - type: Conventions
    url: conventions/active-membranes-conventions.yml
  - type: RateLimits
    url: rate-limits/active-membranes-rate-limits.yml
  - type: Plans
    url: plans/active-membranes-plans-pricing.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/active-membranes-domain-security.yml
- type: Website
  url: https://www.activemembrane.com/
- type: Support
  url: https://www.activemembrane.com/contact
- type: Blog
  url: https://www.activemembrane.com/reverse-osmosis-insights
- type: BlogRSS
  url: https://www.activemembrane.com/blog-feed.xml
- type: LinkedIn
  url: https://www.linkedin.com/company/active-membranes-inc/
- type: LLMsTxt
  url: llms/active-membranes-llms.txt
- type: MCPServer
  url: mcp/active-membranes-mcp.yml
- type: Authentication
  url: authentication/active-membranes-authentication.yml
- type: Conventions
  url: conventions/active-membranes-conventions.yml
- type: Conformance
  url: conformance/active-membranes-conformance.yml
- type: RateLimits
  url: rate-limits/active-membranes-rate-limits.yml
- type: Plans
  url: plans/active-membranes-plans-pricing.yml
x-enrichment:
  date: '2026-09-06'
  status: enriched
  artifacts_added: 10
  pass: local-v3
x-coverage:
  state: covered
  detail: 'Active Membranes sells electro-active reverse-osmosis membrane modules, not software, and runs no developer program
    — but it is not a zero: it serves a hand-written /llms.txt and a live, unauthenticated Wix Site MCP endpoint at /_api/mcp
    that returns nine tools to an anonymous tools/list. Both were captured. No OpenAPI, GraphQL, AsyncAPI, WSDL, SDK, agent
    card or /.well-known document exists on either host.'
  evidence:
  - url: https://www.activemembrane.com/_api/mcp
    status: 200
  - url: https://www.activemembrane.com/llms.txt
    status: 200
  - url: https://www.activemembrane.com/openapi.json
    status: 400
  - url: https://www.activemembrane.com/developers
    status: 404
  checked: '2026-09-06'