App.net

App.net (ADN) was a paid, ad-free real-time social networking and microblogging platform launched in 2012 by Dalton Caldwell's Mixed Media Labs after a public crowdfunding campaign. It was explicitly developer-first: the App.net Stream API exposed posts, users, follows, files, channels, private messaging, filters and a real-time streaming/subscription surface, all governed by OAuth 2.0 bearer tokens and a consistent data/meta response envelope. Third-party clients (Alpha, and many community apps) were built entirely on the public API. App.net announced in 2016 that it would not renew and the service was shut down on 2017-03-14; the live API hosts (api.app.net, developers.app.net) no longer resolve and the app.net domain is now operated by an unrelated apps directory. The API documentation (appdotnet/api-spec), terms of service, and official SDKs remain publicly preserved on the appdotnet GitHub organization, which is the basis for this profile.

App.net is listed with 1 API on the APIs.io network. Tagged areas include Company, Social, Microblogging, Messaging, and Real-Time.

App.net’s developer surface includes documentation, authentication, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

0.0/100 minimal ▬ flat Agent 0/100 human only Front door AI 5/6 prominent Heartbeat 0/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessSelf serve

1 API

Company Social Microblogging Messaging Real-Time Streaming Developer Platform OAuth Defunct Authentication

Kin Score

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

Composite quality — 0.0/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 0.0 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 0/100 · 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 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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

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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 0.0 — up to +20.0 composite points
Access Clarity scores 0.0 — up to +20.0 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/appnet/apis.yml: open an issue on github.com/api-evangelist/appnet 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 →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OAuth

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 1

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

App.net Stream API

The App.net Stream API — a RESTful, OAuth 2.0-secured social API covering posts, users, follows, channels/messages, files, filters, and a real-time streaming surface. Responses ...

App.net API pricing

Rate limits

Global (authenticated): 5000 requests
Write (authenticated): 20 requests
Global (unauthenticated): 50 requests

Rate-limit details →

Rate Limits 1

Documented rate limits and quota policies.

Appnet Rate Limits

3 limits

RATE LIMITS

Security Posture 1

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

Appnet Authentication

oauth2 · 1 scheme

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Appnet Scopes

9 scopes · authorizationCode/implicit/password

9 scopes

SCOPES

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 1

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: appnet
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
  gated: none
  gated_source:
  - onboarding
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  - scopes
  - rate-limits
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/appnet.png
name: App.net
description: 'App.net (ADN) was a paid, ad-free real-time social networking and microblogging platform launched in 2012 by
  Dalton Caldwell''s Mixed Media Labs after a public crowdfunding campaign. It was explicitly developer-first: the App.net
  Stream API exposed posts, users, follows, files, channels, private messaging, filters and a real-time streaming/subscription
  surface, all governed by OAuth 2.0 bearer tokens and a consistent data/meta response envelope. Third-party clients (Alpha,
  and many community apps) were built entirely on the public API. App.net announced in 2016 that it would not renew and the
  service was shut down on 2017-03-14; the live API hosts (api.app.net, developers.app.net) no longer resolve and the app.net
  domain is now operated by an unrelated apps directory. The API documentation (appdotnet/api-spec), terms of service, and
  official SDKs remain publicly preserved on the appdotnet GitHub organization, which is the basis for this profile.'
url: https://raw.githubusercontent.com/api-evangelist/appnet/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-shutdown-date: '2017-03-14'
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-09-16'
tags:
- Company
- Social
- Microblogging
- Messaging
- Real-Time
- Streaming
- Developer Platform
- OAuth
- Defunct
- Authentication
tags_raw:
- Company
- Social
- Microblogging
- Messaging
- Real Time
- Streaming
- Developer Platform
- OAuth
- Defunct
- Authentication
apis:
- name: App.net Stream API
  description: The App.net Stream API — a RESTful, OAuth 2.0-secured social API covering posts, users, follows, channels/messages,
    files, filters, and a real-time streaming surface. Responses use a uniform {data, meta} envelope with cursor pagination
    and X-RateLimit-* headers. Service is retired (shut down 2017-03-14); documentation is preserved at appdotnet/api-spec.
  humanURL: https://github.com/appdotnet/api-spec
  baseURL: https://api.app.net/stream/0/
  tags:
  - Social
  - Microblogging
  - Messaging
  - Streaming
  properties:
  - type: Documentation
    url: https://github.com/appdotnet/api-spec
  - type: Authentication
    url: authentication/appnet-authentication.yml
  - type: OAuthScopes
    url: scopes/appnet-scopes.yml
  - type: RateLimits
    url: rate-limits/appnet-rate-limits.yml
  - type: ErrorCatalog
    url: errors/appnet-problem-types.yml
  - type: Conventions
    url: conventions/appnet-conventions.yml
common:
- type: Website
  url: https://app.net
- type: GitHubOrganization
  url: https://github.com/appdotnet
- type: Documentation
  url: https://github.com/appdotnet/api-spec
- type: TermsOfService
  url: https://github.com/appdotnet/terms-of-service
- type: Authentication
  url: authentication/appnet-authentication.yml
- type: OAuthScopes
  url: scopes/appnet-scopes.yml
- type: Packages
  url: packages/appnet-packages.yml
- type: SDKs
  url: packages/appnet-packages.yml
- type: Conventions
  url: conventions/appnet-conventions.yml
- type: ErrorCatalog
  url: errors/appnet-problem-types.yml
- type: Conformance
  url: conformance/appnet-conformance.yml
- type: Lifecycle
  url: lifecycle/appnet-lifecycle.yml
- type: RateLimits
  url: rate-limits/appnet-rate-limits.yml
- type: LLMsTxt
  url: llms/appnet-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

App.net API — frequently asked questions

Does App.net have an API?

Yes. APIs.io lists 1 API from App.net, including App.net Stream API.

How do I authenticate with the App.net API?

App.net uses bearer-token authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Appnet Authentication.

Is the App.net API ready for AI agents?

App.net has a Kin Score of 0.0 out of 100 (minimal) and an Agent Readiness score of 0.0 (human-only), scored by API Evangelist on 2026-11-06.

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