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 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

28.4/100 thin ▬ flat Agent 28/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-03 · rubric v0.23.0

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 2026-10-03 · rubric v0.23.0

Composite quality — 28.4/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 8.4 / 17

Access Clarity 7.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 6.4 / 9

Regulatory Posture 4.4 / 15

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

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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

Company 1

The organization behind the API

Website

Website

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: '2026-09-16'
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: Website
  url: https://rindler.ai
- 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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