Mainstay

Mainstay (formerly AdmitHub) is a student engagement platform for higher education that delivers human-centered, AI-enhanced conversational coaching to students via SMS text messaging, live chat, web chat, and social messaging. Grounded in behavioral science research, its two-way messaging assistant nudges students through enrollment, registration, financial aid, and academic milestones while giving institutional staff insights and tools to improve engagement, persistence, and outcomes. Mainstay is a Techstars portfolio company. It publishes an API-token authenticated REST API (v1.0, base URL https://api.admithub.com) documented at docs.api.mainstay.com, used to sync student and employee records and engagement data between Mainstay and external systems; tokens are generated from the Mainstay dashboard and presented as Bearer credentials.

Mainstay publishes 1 API on the APIs.io network. Tagged areas include Company, Education, EdTech, Higher Education, and Conversational AI.

Mainstay’s developer surface includes documentation, API reference, support, engineering blog, authentication, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

28.5/100 thin ▬ flat Agent 3/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Company Education EdTech Higher Education Conversational AI Student Engagement Chatbots Messaging

Kin Score

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

Composite quality — 28.5/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 7.7 / 17

Access Clarity 7.4 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 6.5 / 9

Regulatory Posture 6.9 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 0 / 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

Regulatory Posture applies to this provider. Its tags matched the Education & Research 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/mainstay: 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.

Mainstay API

AdmitHub/Mainstay REST API v1.0 for syncing student and employee records and engagement data between Mainstay and external systems, with Bearer API-token authentication.

Security Posture 3

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

Mainstay Authentication

http · 1 scheme

SECURITY

Mainstay Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Mainstay Trust Center

SOC 2, ISO 27001, ISO 27017, ISO 27018, GDPR

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

Compliance

Authentication

DomainSecurity

TrustCenter

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: mainstay
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: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/mainstay.png
name: Mainstay
description: Mainstay (formerly AdmitHub) is a student engagement platform for higher education that delivers human-centered,
  AI-enhanced conversational coaching to students via SMS text messaging, live chat, web chat, and social messaging. Grounded
  in behavioral science research, its two-way messaging assistant nudges students through enrollment, registration, financial
  aid, and academic milestones while giving institutional staff insights and tools to improve engagement, persistence, and
  outcomes. Mainstay is a Techstars portfolio company. It publishes an API-token authenticated REST API (v1.0, base URL https://api.admithub.com)
  documented at docs.api.mainstay.com, used to sync student and employee records and engagement data between Mainstay and
  external systems; tokens are generated from the Mainstay dashboard and presented as Bearer credentials.
url: https://raw.githubusercontent.com/api-evangelist/mainstay/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- techstars
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Education
- EdTech
- Higher Education
- Conversational AI
- Student Engagement
- Chatbots
- Messaging
tags_raw:
- Company
- Education
- EdTech
- Higher Education
- Conversational AI
- Student Engagement
- Chatbot
- Messaging
apis:
- name: Mainstay API
  description: AdmitHub/Mainstay REST API v1.0 for syncing student and employee records and engagement data between Mainstay
    and external systems, with Bearer API-token authentication.
  humanURL: https://docs.api.mainstay.com/
  baseURL: https://api.admithub.com
  tags:
  - Messaging
  - Student Engagement
  - Conversational AI
  properties:
  - type: Documentation
    url: https://docs.api.mainstay.com/
  - type: APIReference
    url: https://docs.api.mainstay.com/
  - type: Authentication
    url: authentication/mainstay-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.mainstay.com/
- type: DeveloperPortal
  url: https://docs.api.mainstay.com/
- type: Documentation
  url: https://docs.api.mainstay.com/
- type: APIReference
  url: https://docs.api.mainstay.com/
- type: Support
  url: https://support.mainstay.com/
- type: Blog
  url: https://mainstay.com/blog/
- type: GitHubOrganization
  url: https://github.com/AdmitHub
- type: Login
  url: https://app.mainstay.com/login/
- type: TermsOfService
  url: https://mainstay.com/termsofuse/
- type: PrivacyPolicy
  url: https://mainstay.com/privacy/
- type: Compliance
  url: https://mainstay.com/security/
- type: Authentication
  url: authentication/mainstay-authentication.yml
- type: Conventions
  url: conventions/mainstay-conventions.yml
- type: DomainSecurity
  url: security/mainstay-domain-security.yml
- type: TrustCenter
  url: security/mainstay-trust-center.yml
- type: LLMsTxt
  url: llms/mainstay-llms.txt
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 6
  pass: local-v1

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