Pinboard

Pinboard is a social bookmarking service designed for introverts, allowing users to save, tag, and share web pages. It offers a simple, read‑only API for retrieving bookmarks, adding new ones, managing tags, and searching. The service emphasizes privacy, minimalism, and long‑term storage, and provides paid plans for unlimited bookmarks. Its API documentation is publicly available at https://pinboard.in/api/.

Pinboard is listed with 1 API on the APIs.io network. Tagged areas include Company, Bookmarking, Social, API, and Productivity.

Pinboard’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, signup flow, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.0/100 thin Agent 5/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Company Bookmarking SocialAPIProductivity Web

Kin Score

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

Composite quality — 29.0/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 5.8 / 17

Operational Transparency 1.7 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 5.3 / 15

Agent readiness — 5/100 · 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 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

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/pinboard/"><img src="https://apis.io/badge/pinboard/card.svg" alt="Pinboard on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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)

11 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 34.2 — up to +13.2 composite points
Contract Governance scores 0.0 — 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/pinboard/apis.yml: open an issue on github.com/api-evangelist/pinboard 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.

Pinboard API

Pinboard provides a read‑only API (v1) for accessing bookmarks, notes, tags and user data. All methods are GET and return XML or JSON.

Security Posture 3

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

Pinboard Authentication

2 schemes

SECURITY

Pinboard Domain Security

TLSv1.3 · HSTS

SECURITY

Pinboard Vulnerability Disclosure

no policy recorded

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Pinboard Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

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

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Lifecycle

Lifecycle

ErrorCatalog

ErrorCatalog

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

Authentication

Authentication

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: pinboard
name: Pinboard
description: Pinboard is a social bookmarking service designed for introverts, allowing users to save, tag, and share web
  pages. It offers a simple, read‑only API for retrieving bookmarks, adding new ones, managing tags, and searching. The service
  emphasizes privacy, minimalism, and long‑term storage, and provides paid plans for unlimited bookmarks. Its API documentation
  is publicly available at https://pinboard.in/api/.
url: https://artifacts.apis.io/pinboard/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'
tags:
- Company
- Bookmarking
- Social
- API
- Productivity
- Web
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://pinboard.in/blue-pin.png
common:
- type: Conventions
  url: conventions/pinboard-conventions.yml
- type: Authentication
  url: authentication/pinboard-authentication.yml
- type: Lifecycle
  url: lifecycle/pinboard-lifecycle.yml
- type: ErrorCatalog
  url: errors/pinboard-problem-types.yml
- type: Hosts
  url: hosts/pinboard-hosts.yml
- type: TermsOfService
  url: https://pinboard.in/tos/
- type: Security
  url: https://pinboard.in/security/
- type: VulnerabilityDisclosure
  url: security/pinboard-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/pinboard-domain-security.yml
- type: Website
  url: https://pinboard.in/
- type: DeveloperPortal
  url: https://pinboard.in/api/
- type: Documentation
  url: https://pinboard.in/api/
- type: APIReference
  url: https://pinboard.in/api/
- type: GettingStarted
  url: https://pinboard.in/api/
- type: Blog
  url: https://blog.pinboard.in/
- type: GitHubOrganization
  url: https://github.com/pinboard
- type: SignUp
  url: https://pinboard.in/signup
- type: PrivacyPolicy
  url: https://pinboard.in/privacy
apis:
- name: Pinboard API
  description: Pinboard provides a read‑only API (v1) for accessing bookmarks, notes, tags and user data. All methods are
    GET and return XML or JSON.
  humanURL: https://pinboard.in/api/
  baseURL: https://api.pinboard.in/v1/
  aid: pinboard:pinboard-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The Pinboard API documentation is HTML only and provides no OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL spec.
  evidence:
  - url: https://pinboard.in/api/
    status: 200
  checked: '2026-10-28'
x-submission-probe: 200, 2026-10-26
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Pinboard API — frequently asked questions

Does Pinboard have an API?

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

How do I authenticate with the Pinboard API?

Pinboard uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Pinboard Authentication.

Is the Pinboard API ready for AI agents?

Pinboard has a Kin Score of 29.0 out of 100 (thin) and an Agent Readiness score of 5.4 (agent-aware), scored by API Evangelist on 2026-10-31.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

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

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/pinboard"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/pinboard/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/pinboard/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.