NewsBlur

NewsBlur is a personal news reader that brings people together to talk about the world. It is an RSS/Atom feed aggregator with training-based intelligence (hide or highlight stories per feed), original-site and original-text views, saved (starred) stories, folders, OPML import/export, and a social layer of shareable "blurblogs" with following, comments and likes. NewsBlur is open source (MIT, github.com/samuelclay/NewsBlur), runs native iOS, macOS and Android apps, and exposes a documented HTTP API plus an official hosted Model Context Protocol (MCP) server at newsblur.com/mcp for AI agents. This profile captures NewsBlur's public API surface for the API Evangelist network.

NewsBlur publishes 7 API contracts indexed on the APIs.io network, including Authentication API, Classifiers API, Feed Management API, and 4 more. Tagged areas include Company, RSS, News, Feed Reader, and Aggregator.

The NewsBlur catalog on APIs.io includes 1 Spectral governance ruleset.

NewsBlur’s developer surface includes documentation, API reference, support, engineering blog, signup flow, authentication, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.9/100 thin ▬ flat Agent 45/100 agent ready Front door AI 5/6 prominent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 3 Agent Skills

Company RSS News Feed Reader Aggregator Social Content Media Open Source MCP

Kin Score

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

Composite quality — 36.9/100 · thin

Contract Quality 8.6 / 19

Developer Ergonomics 7.1 / 15

Access Clarity 5.1 / 15

Operational Transparency 0.3 / 10

Contract Governance 1.6 / 9

Discoverability 4.5 / 8

Regulatory Posture 3.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 45/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 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

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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):

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
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
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

4 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 45.7 — up to +13.6 composite points
Access Clarity scores 34.2 — up to +13.2 composite points
Operational Transparency scores 2.6 — up to +12.7 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/newsblur/apis.yml: open an issue on github.com/api-evangelist/newsblur 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	5.0 (thin)	-	1

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.

Standards implemented 5

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

RSS

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

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

NewsBlur Authentication API

NewsBlur Classifiers API

Intelligence training classifiers.

NewsBlur Feed Management API

Subscriptions, folders and organization.

NewsBlur Feeds API

Feed subscription, search and metadata.

NewsBlur Import Export API

OPML import and export.

NewsBlur Social API

Blurblogs, sharing, following and comments.

NewsBlur Stories API

Reading, marking and starring stories.

Scroll for all 7

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

NewsBlur authentication API

OPEN COLLECTION

NewsBlur authentication classifiers API

OPEN COLLECTION

NewsBlur authentication feed-management API

OPEN COLLECTION

NewsBlur authentication feeds API

OPEN COLLECTION

NewsBlur authentication import-export API

OPEN COLLECTION

NewsBlur authentication social API

OPEN COLLECTION

NewsBlur authentication stories API

OPEN COLLECTION

Scroll for all 7

MCP Servers 1

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

NewsBlur MCP Server

NewsBlur ships an official hosted Model Context Protocol (MCP) server that lets AI agents (Claude Desktop, Claude Code, Cursor, or any MCP-compatible client) interact with a use...

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Read and triage your NewsBlur river

AGENT SKILL

Save and share a story to your blurblog

AGENT SKILL

Subscribe to a feed and organize it

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

NewsBlur API Rules

51 rules · 49 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Newsblur Openapi Overlay

3 actions · update · newsblur-openapi.yml

DERIVED

Security Posture 2

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

Newsblur Authentication

apiKey/http · 2 schemes

SECURITY

Newsblur Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

DataModel

ErrorCatalog

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: newsblur
name: NewsBlur
description: NewsBlur is a personal news reader that brings people together to talk about the world. It is an RSS/Atom feed
  aggregator with training-based intelligence (hide or highlight stories per feed), original-site and original-text views,
  saved (starred) stories, folders, OPML import/export, and a social layer of shareable "blurblogs" with following, comments
  and likes. NewsBlur is open source (MIT, github.com/samuelclay/NewsBlur), runs native iOS, macOS and Android apps, and exposes
  a documented HTTP API plus an official hosted Model Context Protocol (MCP) server at newsblur.com/mcp for AI agents. This
  profile captures NewsBlur's public API surface for the API Evangelist network.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - 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://www.newsblur.com/media/img/logo_512.png
url: https://raw.githubusercontent.com/api-evangelist/newsblur/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- RSS
- News
- Feed Reader
- Aggregator
- Social
- Content
- Media
- Open Source
- MCP
tags_raw:
- Company
- RSS
- News
- Feed Reader
- Aggregator
- Social
- Content
- Media
- Open Source
- MCP
- Open-Source
apis:
- aid: newsblur:newsblur-authentication-api
  name: NewsBlur Authentication API
  description: Login, logout and signup.
  humanURL: https://www.newsblur.com/api
  tags:
  - Authentication
  tags_raw:
  - authentication
  properties:
  - type: OpenAPI
    url: openapi/newsblur-authentication-api-openapi.yml
  - type: Authentication
    url: authentication/newsblur-authentication.yml
  - type: Conventions
    url: conventions/newsblur-conventions.yml
  - type: ErrorCatalog
    url: errors/newsblur-problem-types.yml
  - type: DataModel
    url: data-model/newsblur-data-model.yml
  - type: Conformance
    url: conformance/newsblur-conformance.yml
- aid: newsblur:newsblur-classifiers-api
  name: NewsBlur Classifiers API
  description: Intelligence training classifiers.
  humanURL: https://www.newsblur.com/api
  tags:
  - Classifiers
  tags_raw:
  - classifiers
  properties:
  - type: OpenAPI
    url: openapi/newsblur-classifiers-api-openapi.yml
  - type: Authentication
    url: authentication/newsblur-authentication.yml
  - type: Conventions
    url: conventions/newsblur-conventions.yml
  - type: ErrorCatalog
    url: errors/newsblur-problem-types.yml
  - type: DataModel
    url: data-model/newsblur-data-model.yml
  - type: Conformance
    url: conformance/newsblur-conformance.yml
- aid: newsblur:newsblur-feed-management-api
  name: NewsBlur Feed Management API
  description: Subscriptions, folders and organization.
  humanURL: https://www.newsblur.com/api
  tags:
  - Feed Management
  tags_raw:
  - feed-management
  properties:
  - type: OpenAPI
    url: openapi/newsblur-feed-management-api-openapi.yml
  - type: Authentication
    url: authentication/newsblur-authentication.yml
  - type: Conventions
    url: conventions/newsblur-conventions.yml
  - type: ErrorCatalog
    url: errors/newsblur-problem-types.yml
  - type: DataModel
    url: data-model/newsblur-data-model.yml
  - type: Conformance
    url: conformance/newsblur-conformance.yml
- aid: newsblur:newsblur-feeds-api
  name: NewsBlur Feeds API
  description: Feed subscription, search and metadata.
  humanURL: https://www.newsblur.com/api
  tags:
  - Feed
  tags_raw:
  - feeds
  properties:
  - type: OpenAPI
    url: openapi/newsblur-feeds-api-openapi.yml
  - type: Authentication
    url: authentication/newsblur-authentication.yml
  - type: Conventions
    url: conventions/newsblur-conventions.yml
  - type: ErrorCatalog
    url: errors/newsblur-problem-types.yml
  - type: DataModel
    url: data-model/newsblur-data-model.yml
  - type: Conformance
    url: conformance/newsblur-conformance.yml
- aid: newsblur:newsblur-import-export-api
  name: NewsBlur Import Export API
  description: OPML import and export.
  humanURL: https://www.newsblur.com/api
  tags:
  - Import Export
  tags_raw:
  - import-export
  properties:
  - type: OpenAPI
    url: openapi/newsblur-import-export-api-openapi.yml
  - type: Authentication
    url: authentication/newsblur-authentication.yml
  - type: Conventions
    url: conventions/newsblur-conventions.yml
  - type: ErrorCatalog
    url: errors/newsblur-problem-types.yml
  - type: DataModel
    url: data-model/newsblur-data-model.yml
  - type: Conformance
    url: conformance/newsblur-conformance.yml
- aid: newsblur:newsblur-social-api
  name: NewsBlur Social API
  description: Blurblogs, sharing, following and comments.
  humanURL: https://www.newsblur.com/api
  tags:
  - Social
  tags_raw:
  - social
  properties:
  - type: OpenAPI
    url: openapi/newsblur-social-api-openapi.yml
  - type: Authentication
    url: authentication/newsblur-authentication.yml
  - type: Conventions
    url: conventions/newsblur-conventions.yml
  - type: ErrorCatalog
    url: errors/newsblur-problem-types.yml
  - type: DataModel
    url: data-model/newsblur-data-model.yml
  - type: Conformance
    url: conformance/newsblur-conformance.yml
- aid: newsblur:newsblur-stories-api
  name: NewsBlur Stories API
  description: Reading, marking and starring stories.
  humanURL: https://www.newsblur.com/api
  tags:
  - Stories
  tags_raw:
  - stories
  properties:
  - type: OpenAPI
    url: openapi/newsblur-stories-api-openapi.yml
  - type: Authentication
    url: authentication/newsblur-authentication.yml
  - type: Conventions
    url: conventions/newsblur-conventions.yml
  - type: ErrorCatalog
    url: errors/newsblur-problem-types.yml
  - type: DataModel
    url: data-model/newsblur-data-model.yml
  - type: Conformance
    url: conformance/newsblur-conformance.yml
common:
- type: Website
  url: https://www.newsblur.com/
- type: DeveloperPortal
  url: https://www.newsblur.com/api
- type: Documentation
  url: https://www.newsblur.com/api
- type: APIReference
  url: https://www.newsblur.com/api
- type: GitHubOrganization
  url: https://github.com/samuelclay/NewsBlur
- type: Support
  url: https://forum.newsblur.com
- type: Blog
  url: https://blog.newsblur.com
- type: PrivacyPolicy
  url: https://www.newsblur.com/privacy
- type: TermsOfService
  url: https://www.newsblur.com/tos
- type: SignUp
  url: https://www.newsblur.com/
- type: MCPServer
  url: mcp/newsblur-mcp.yml
- type: Authentication
  url: authentication/newsblur-authentication.yml
- type: Conventions
  url: conventions/newsblur-conventions.yml
- type: Packages
  url: packages/newsblur-packages.yml
- type: LLMsTxt
  url: llms/newsblur-llms.txt
- type: WellKnown
  url: well-known/newsblur-well-known.yml
- type: Lifecycle
  url: lifecycle/newsblur-lifecycle.yml
- type: DomainSecurity
  url: security/newsblur-domain-security.yml
- type: DataModel
  url: data-model/newsblur-data-model.yml
- type: ErrorCatalog
  url: errors/newsblur-problem-types.yml
- type: Conformance
  url: conformance/newsblur-conformance.yml
- type: Overlay
  url: overlays/newsblur-openapi-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 17
  pass: local-v1

NewsBlur API — frequently asked questions

Does NewsBlur have an API?

Yes. APIs.io lists 7 APIs from NewsBlur, including NewsBlur Authentication API, NewsBlur Classifiers API and NewsBlur Feed Management API, and 4 more.

Is there an OpenAPI specification for the NewsBlur API?

Yes. APIs.io indexes 7 OpenAPI specifications for NewsBlur, each linked for download from this page.

How do I authenticate with the NewsBlur API?

NewsBlur documents its authentication (apiKey/http · 2 schemes). The details are profiled on APIs.io as Newsblur Authentication.

Does NewsBlur have an MCP server?

Yes. APIs.io lists 1 MCP server for NewsBlur: NewsBlur ships an official hosted Model Context Protocol (MCP) server that lets AI agents (Claude Desktop, Claude Code, Cursor, or any MCP-compatible client) interact with a user's feeds, stories and

Is the NewsBlur API ready for AI agents?

NewsBlur has a Kin Score of 36.9 out of 100 (thin) and an Agent Readiness score of 44.8 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

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One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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