Rindler

Rindler is a Y Combinator (Summer 2026) company that operates a hosted Model Context Protocol (MCP) server turning any pre-onboarded website — including sites that have no API — into a deterministic, typed set of tools that AI agents can reliably use. Agents open a session against a mapped site, dispatch a semantic action (search, add to cart, submit a form, move a candidate, pull a statement), and receive structured JSON records instead of raw HTML, accessibility trees, or DOM selectors. Rindler handles authentication, 2FA, pop-ups, bot defenses, navigation, retries, and error recovery server-side, and re-verifies each site mapping against the real site before shipping it. It targets legacy portals, private SaaS dashboards, government registries, healthcare/insurance portals, ATS systems, and bank/brokerage sites.

Rindler publishes 1 API on the APIs.io network. Tagged areas include Company, MCP, AI Agents, Web Automation, and Browser Automation.

Rindler’s developer surface includes documentation, getting-started guide, pricing, signup flow, support, authentication, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

26.4/100 thin ▬ flat Agent 28/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs 1 MCP Servers

Company MCP AI Agents Web Automation Browser Automation Structured DataWebsite to APIAgent Tools Y Combinator

Kin Score

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

Composite quality — 26.4/100 · thin

Contract Quality 0.0 / 25

Developer Ergonomics 9.9 / 20

Access Clarity 8.9 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 7.6 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/rindler: 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 1

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

Rindler MCP Server

Hosted MCP server (https://mcp.rindler.ai) that exposes mapped websites as deterministic, typed agent tools over HTTP with OAuth 2.0 PKCE. Core tools: start_session, dispatch_ac...

MCP Servers 1

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

Rindler MCP Server

Hosted MCP server that turns any pre-onboarded website, including sites without an API, into a deterministic, typed set of agent tools. Agents open a session on a mapped site, d...

MCP SERVER

Security Posture 2

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

Rindler Authentication

oauth2 · 1 scheme

SECURITY

Rindler Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Rindler Scopes

3 scopes · authorizationCode

3 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

MCPServer

WellKnown

AgentSkill

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Source (apis.yml)

aid: rindler
name: Rindler
description: Rindler is a Y Combinator (Summer 2026) company that operates a hosted Model Context Protocol (MCP) server turning
  any pre-onboarded website — including sites that have no API — into a deterministic, typed set of tools that AI agents can
  reliably use. Agents open a session against a mapped site, dispatch a semantic action (search, add to cart, submit a form,
  move a candidate, pull a statement), and receive structured JSON records instead of raw HTML, accessibility trees, or DOM
  selectors. Rindler handles authentication, 2FA, pop-ups, bot defenses, navigation, retries, and error recovery server-side,
  and re-verifies each site mapping against the real site before shipping it. It targets legacy portals, private SaaS dashboards,
  government registries, healthcare/insurance portals, ATS systems, and bank/brokerage sites.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://rindler.ai/logo.png
url: https://raw.githubusercontent.com/api-evangelist/rindler/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: company
x-tier-reason: enriched-from-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- MCP
- AI Agents
- Web Automation
- Browser Automation
- Structured Data
- Website to API
- Agent Tools
- Y Combinator
tags_raw:
- Company
- MCP
- Model Context Protocol
- AI Agents
- Web Automation
- Browser Automation
- Structured Data
- Website to API
- Agent Tools
- Y Combinator
apis:
- name: Rindler MCP Server
  description: 'Hosted MCP server (https://mcp.rindler.ai) that exposes mapped websites as deterministic, typed agent tools
    over HTTP with OAuth 2.0 PKCE. Core tools: start_session, dispatch_action, extract_content, extract_document, close_session.'
  humanURL: https://rindler.ai/docs
  baseURL: https://mcp.rindler.ai
  tags:
  - MCP
  - AI Agents
  - Web Automation
  properties:
  - type: MCPServer
    url: mcp/rindler-mcp.yml
  - type: Authentication
    url: authentication/rindler-authentication.yml
  - type: OAuthScopes
    url: scopes/rindler-scopes.yml
  - type: Conventions
    url: conventions/rindler-conventions.yml
  - type: WellKnown
    url: well-known/rindler-well-known.yml
  - type: AgentSkill
    url: skills/_index.yml
common:
- type: DeveloperPortal
  url: https://rindler.ai/docs
- type: Documentation
  url: https://rindler.ai/docs
- type: GettingStarted
  url: https://rindler.ai/docs/quickstart
- type: Pricing
  url: https://rindler.ai/pricing
- type: SignUp
  url: https://chat.rindler.ai/?from=rindler-site
- type: TermsOfService
  url: https://rindler.ai/terms
- type: PrivacyPolicy
  url: https://rindler.ai/privacy
- type: Support
  url: https://rindler.ai/faq
- type: LLMsTxt
  url: llms/rindler-llms.txt
- type: MCPServer
  url: mcp/rindler-mcp.yml
- type: Authentication
  url: authentication/rindler-authentication.yml
- type: OAuthScopes
  url: scopes/rindler-scopes.yml
- type: Conventions
  url: conventions/rindler-conventions.yml
- type: WellKnown
  url: well-known/rindler-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DomainSecurity
  url: security/rindler-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 11
  pass: local-v1

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