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 is listed with 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 engineering blog, documentation, API reference, getting-started guide, signup flow, authentication, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.7/100 thin ▬ flat Agent 26/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API

Company Consumer Messaging Chat BotsGroup MessagingCommunications Social

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 34.7/100 · thin

Contract Quality 8.3 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.9 / 11

Contract Governance 0.5 / 10

Discoverability 6.2 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 21.1 — up to +15.8 composite points
Contract Quality scores 39.0 — up to +15.3 composite points
Operational Transparency scores 7.9 — up to +12.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/groupme/apis.yml: open an issue on github.com/api-evangelist/groupme to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
IFTTT Services (service publishers)	long-tail	2.5 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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.

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

X-MCPServerCandidate

X-MCPServerCandidate

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Webhooks

DataModel

Lifecycle

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 2

The organization behind the API

Blog

Blog

Website

Website

Source (apis.yml)

aid: groupme
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: '2026-11-06'
  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: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Consumer
- Messaging
- Chat
- Bots
- Group Messaging
- Communications
- Social
tags_raw:
- 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: X-MCPServerCandidate
    url: mcp/groupme-mcp.yml
    note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list
      derived from the published API contracts, not an existing server. The scorer already read the manifest and reported
      mcp_server correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://groupme.com/updates
  type: Blog
- 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: X-MCPServerCandidate
  url: mcp/groupme-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- 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

GroupMe API — frequently asked questions

Does GroupMe have an API?

Yes. APIs.io lists 1 API from GroupMe, including GroupMe API v3.

How do I authenticate with the GroupMe API?

GroupMe uses bearer-token authentication (apiKey/oauth2 · 3 schemes). The details are profiled on APIs.io as Groupme Authentication.

Is the GroupMe API ready for AI agents?

GroupMe has a Kin Score of 34.7 out of 100 (thin) and an Agent Readiness score of 25.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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