Instapaper

Instapaper is a read‑it‑later service that lets users save web articles to read later across devices such as iOS, Android, desktop browsers, and e‑readers. Founded in 2008, it offers a clean, distraction‑free reading experience, supports offline access, highlights, notes, and integrates with services like Pocket, Flipboard, and Twitter. The service provides a simple HTTP API for developers to add, retrieve, and manage saved items, documented at https://www.instapaper.com/api/1.

Instapaper is listed with 1 API on the APIs.io network. Tagged areas include Company, read-it-later, productivity, web-service, and bookmarking.

Instapaper’s developer surface includes authentication, documentation, API reference, getting-started guide, support, engineering blog, pricing, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.9/100 thin Agent 12/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Companyread-it-laterproductivityweb-servicebookmarkingAPI

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 29.9/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 12.0 / 17

Access Clarity 5.4 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.4 / 15

Agent readiness — 12/100 · agent aware

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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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

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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

9 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
Access Clarity scores 31.6 — up to +13.7 composite points
Operational Transparency scores 5.3 — up to +12.3 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/instapaper/apis.yml: open an issue on github.com/api-evangelist/instapaper 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 →

APIs 1

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

Instapaper API

Instapaper API v2 provides endpoints to manage bookmarks, folders, tags, highlights, and account information.

Security Posture 2

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

Instapaper Authentication

1 scheme

SECURITY

Instapaper Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Instapaper Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

ErrorCatalog

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

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 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: instapaper
name: Instapaper
description: Instapaper is a read‑it‑later service that lets users save web articles to read later across devices such as
  iOS, Android, desktop browsers, and e‑readers. Founded in 2008, it offers a clean, distraction‑free reading experience,
  supports offline access, highlights, notes, and integrates with services like Pocket, Flipboard, and Twitter. The service
  provides a simple HTTP API for developers to add, retrieve, and manage saved items, documented at https://www.instapaper.com/api/1.
image: https://www.instapaper.com/static/img/instapaper-logo.png
url: https://artifacts.apis.io/instapaper/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-28 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Developers page documents API v2 endpoints but no OpenAPI/Swagger spec is published.
  evidence:
  - url: https://instapaper.com/developers
    status: 200
  checked: '2026-10-28'
tags:
- Company
- read-it-later
- productivity
- web-service
- bookmarking
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/instapaper-authentication.yml
- type: ErrorCatalog
  url: errors/instapaper-problem-types.yml
- type: Hosts
  url: hosts/instapaper-hosts.yml
- type: Vendors
  url: vendors/instapaper-vendors.yml
- type: SDKs
  url: packages/instapaper-packages.yml
- type: Packages
  url: packages/instapaper-packages.yml
- type: DomainSecurity
  url: security/instapaper-domain-security.yml
- type: Website
  url: https://instapaper.com/
- type: DeveloperPortal
  url: https://www.instapaper.com/developers
- type: Documentation
  url: https://www.instapaper.com/docs
- type: APIReference
  url: https://www.instapaper.com/api
- type: GettingStarted
  url: https://www.instapaper.com/getting-started
- type: Support
  url: https://www.instapaper.com/docs
- type: Blog
  url: https://www.instapaper.com/blog
- type: Pricing
  url: https://www.instapaper.com/pricing
- type: TermsOfService
  url: https://www.instapaper.com/about-legal/legal/terms-of-service
- type: PrivacyPolicy
  url: https://www.instapaper.com/about-legal/legal/privacy-policy
- type: GitHubOrganization
  url: https://github.com/instapaper
apis:
- aid: instapaper:instapaper-api
  name: Instapaper API
  description: Instapaper API v2 provides endpoints to manage bookmarks, folders, tags, highlights, and account information.
  humanURL: https://www.instapaper.com/api
  baseURL: https://www.instapaper.com/api/2
  tags:
  - read-it-later
  - API
  properties: []
x-submission-probe: 200, 2026-10-26
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 19
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Instapaper API — frequently asked questions

Does Instapaper have an API?

Yes. APIs.io lists 1 API from Instapaper, including Instapaper API.

How do I authenticate with the Instapaper API?

Instapaper uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Instapaper Authentication.

Is the Instapaper API ready for AI agents?

Instapaper has a Kin Score of 29.9 out of 100 (thin) and an Agent Readiness score of 11.5 (agent-aware), scored by API Evangelist on 2026-10-31.

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