GroupMe

GroupMe is a group messaging application, owned by Microsoft, that lets people chat in named groups and direct conversations across iOS, Android, and the web, including over SMS. For developers, GroupMe publishes the GroupMe API v3 — a REST + JSON API at https://api.groupme.com/v3 authenticated with a per-user access token in the X-Access-Token header. The API covers groups and former groups, memberships and nicknames, group and direct messages with attachments, likes, blocks, user profiles, and bots. A Bayeux/Faye push service delivers realtime message and typing events, and bots receive HTTP webhook callbacks for every group message. GroupMe was surfaced as a portfolio company of Thrive Capital and enriched here from its public developer documentation.

GroupMe publishes 1 API on the APIs.io network. Tagged areas include Company, Consumer, Messaging, Chat, and Bots.

The GroupMe catalog on APIs.io includes 1 event-driven AsyncAPI specification.

GroupMe’s developer surface includes documentation, API reference, getting-started guide, signup flow, authentication, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
33.6/100 thin ▬ flat Agent 47/100 agent ready Full breakdown ↓
scored 2026-07-23 · rubric v0.5
AccessSelf serve
1 APIs 1 MCP Servers
CompanyConsumerMessagingChatBotsGroup MessagingCommunicationSocial

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-23 · rubric v0.5
Composite quality — 33.6/100 · thin
Contract Quality 5.7 / 25
Developer Ergonomics 10.9 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 1.0 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 47/100 · agent ready
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/groupme: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

GroupMe API v3

REST + JSON API for GroupMe groups, memberships, messages, chats, likes, blocks, users, and bots, plus a Bayeux push service and bot webhook callbacks.

MCP Servers 1

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

groupme-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Groupme Push Webhooks

ASYNCAPI

Security Posture 2

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

Groupme Authentication

apiKey/oauth2 · 3 schemes

SECURITY

Groupme Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Webhooks
Webhooks
 DataModel
DataModel
 Lifecycle
Lifecycle
 Conformance
Conformance

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

Packages
Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: groupme
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/groupme.png
name: GroupMe
description: GroupMe is a group messaging application, owned by Microsoft, that lets people chat in named groups and direct
  conversations across iOS, Android, and the web, including over SMS. For developers, GroupMe publishes the GroupMe API v3
  — a REST + JSON API at https://api.groupme.com/v3 authenticated with a per-user access token in the X-Access-Token header.
  The API covers groups and former groups, memberships and nicknames, group and direct messages with attachments, likes, blocks,
  user profiles, and bots. A Bayeux/Faye push service delivers realtime message and typing events, and bots receive HTTP webhook
  callbacks for every group message. GroupMe was surfaced as a portfolio company of Thrive Capital and enriched here from
  its public developer documentation.
url: https://raw.githubusercontent.com/api-evangelist/groupme/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- thrive-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Consumer
- Messaging
- Chat
- Bots
- Group Messaging
- Communication
- Social
apis:
- name: GroupMe API v3
  description: REST + JSON API for GroupMe groups, memberships, messages, chats, likes, blocks, users, and bots, plus a Bayeux
    push service and bot webhook callbacks.
  humanURL: https://dev.groupme.com/docs/v3
  baseURL: https://api.groupme.com/v3
  tags:
  - Messaging
  - Chat
  - Bots
  properties:
  - type: Documentation
    url: https://dev.groupme.com/docs/v3
  - type: APIReference
    url: https://dev.groupme.com/docs/v3
  - type: Authentication
    url: authentication/groupme-authentication.yml
  - type: Conventions
    url: conventions/groupme-conventions.yml
  - type: Idempotency
    url: conventions/groupme-conventions.yml
  - type: ErrorCatalog
    url: errors/groupme-problem-types.yml
  - type: Webhooks
    url: asyncapi/groupme-push-webhooks.yml
  - type: DataModel
    url: data-model/groupme-data-model.yml
  - type: Lifecycle
    url: lifecycle/groupme-lifecycle.yml
  - type: MCPServer
    url: mcp/groupme-mcp.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://groupme.com
- type: DeveloperPortal
  url: https://dev.groupme.com/
- type: Documentation
  url: https://dev.groupme.com/docs/v3
- type: APIReference
  url: https://dev.groupme.com/docs/v3
- type: GettingStarted
  url: https://dev.groupme.com/tutorials/oauth
- type: TermsOfService
  url: https://groupme.com/en-US/terms
- type: PrivacyPolicy
  url: https://groupme.com/privacy
- type: SignUp
  url: https://web.groupme.com
- type: Authentication
  url: authentication/groupme-authentication.yml
- type: Conventions
  url: conventions/groupme-conventions.yml
- type: Idempotency
  url: conventions/groupme-conventions.yml
- type: ErrorCatalog
  url: errors/groupme-problem-types.yml
- type: Webhooks
  url: asyncapi/groupme-push-webhooks.yml
- type: DataModel
  url: data-model/groupme-data-model.yml
- type: Lifecycle
  url: lifecycle/groupme-lifecycle.yml
- type: Conformance
  url: conformance/groupme-conformance.yml
- type: Packages
  url: packages/groupme-packages.yml
- type: MCPServer
  url: mcp/groupme-mcp.yml
- type: WellKnown
  url: well-known/groupme-well-known.yml
- type: LLMsTxt
  url: llms/groupme-llms.txt
- type: DomainSecurity
  url: security/groupme-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence