ThreadPage

ThreadPage is a web‑based notes application that organizes each project or client into its own threaded sequence of notes. Users can add text, checklists, tables, images, and files, and share threads with collaborators. Pro plans integrate AI assistants such as Claude Code, ChatGPT or Codex, which can read and augment notes via API keys. The service runs in browsers and offers iOS and Android apps, with free unlimited usage for basic notes and paid tiers for storage and AI features.

ThreadPage publishes 4 API contracts indexed on the APIs.io network, including Endpoint URLs API, Events API, Integration API, and 1 more. Tagged areas include Notes, Collaboration, Productivity, Artificial Intelligence, and Web App.

The ThreadPage catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

ThreadPage’s developer surface includes changelog, authentication, API reference, documentation, pricing, support, signup flow, and 35 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

66.1/100 strong Agent 61/100 agent native Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers 1 Agent Skills

Notes Collaboration Productivity Artificial Intelligence Web App

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 66.1/100 · strong

Contract Quality 13.5 / 19

Developer Ergonomics 7.4 / 15

Access Clarity 11.5 / 15

Operational Transparency 6.3 / 10

Contract Governance 3.2 / 9

Discoverability 5.8 / 8

Regulatory Posture 5.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 61/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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):

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too Ask about this →
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's Ask about this →
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter Ask about this →
Well-Known Catalog +4 pts — common[].type includes WellKnown, APICatalog, or api-catalog Ask about this →
Consent & Bot Identity +3 pts — common[].type includes AIPREF, ContentSignal, WebBotAuth, or HTTPMessageSignatures Ask about this →

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

Developer Ergonomics scores 49.3 — up to +10.1 composite points Ask about this →
Contract Governance scores 35.6 — up to +7.7 composite points Ask about this →
Contract Quality scores 71.8 — up to +7.1 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/thread-page/apis.yml: open an issue on github.com/api-evangelist/thread-page 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 4

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 (documented)

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 4

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

ThreadPage Endpoint URLs API

The Endpoint URLs API from ThreadPage — 1 operation(s) for endpoint urls.

ThreadPage Events API

The Events API from ThreadPage — 8 operation(s) for events.

ThreadPage Integration API

The Integration API API from ThreadPage — 37 operation(s) for integration api.

ThreadPage Requests API

The Requests API from ThreadPage — 5 operation(s) for requests.

MCP Servers 1

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

ThreadPage MCP Server

Remote MCP server at thread.page requiring an API key.

MCP SERVER

Agent Skills 1

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

notes

AGENT SKILL

ThreadPage API pricing

Prices published by ThreadPage. A free plan or tier is listed.

Plan	Price
Free	Free
Pro (Monthly)	USD 7.99 every month
Pro (Annual)	USD 79.99 every year
Pro 50 GB (Monthly)	USD 9.99 every month
Pro 50 GB (Annual)	USD 99.99 every year
Pro 100 GB (Monthly)	USD 12.99 every month
Pro 100 GB (Annual)	USD 129.99 every year

Plan details, limits and sources →

Rate limits

Calls per minute per connection: Calls a minute: 120
Writes per minute per connection: Writes a minute: 30
Writes per UTC day per connection: Writes a UTC day: 1,000

Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

ThreadPage Plans Pricing

7 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

ThreadPage Rate Limits

3 limits

RATE LIMITS

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

ThreadPage

8 quoted statements, read from ThreadPage's own page on 2026-11-10.

TERMS

Privacy & Data 1

Its role, the data it processes, retention and transfers, quoted from its own privacy page.

ThreadPage

14 quoted statements, read from ThreadPage's own page on 2026-11-10.

PRIVACY

Eligibility 1

Who may sign up and where, quoted from its own terms.

ThreadPage

6 quoted statements, read from ThreadPage's own page on 2026-11-10.

ELIGIBILITY

AI Preferences 1

Its stance on AI training, inference and agents, quoted from its own pages.

ThreadPage

4 quoted statements, read from ThreadPage's own page on 2026-11-10.

AI PREFS

Data License 1

How its data and outputs may be reused, quoted from its own terms.

ThreadPage

2 quoted statements, read from ThreadPage's own page on 2026-11-10.

LICENSE

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Thread Page Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Thread Page Context

120 classes · 172 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

ThreadPage API Rules

51 rules · 38 error-severity 10 warn-severity 3 info-severity

SPECTRAL

JSON Schema 8

Standalone JSON Schema definitions for this provider's data models.

ConnectionInfo

11 properties

JSON SCHEMA

Delivery

12 properties

JSON SCHEMA

ExecutorRequest

13 properties

JSON SCHEMA

InboundChallenge

1 properties

JSON SCHEMA

InboundOutcome

6 properties

JSON SCHEMA

Note

22 properties

JSON SCHEMA

Subscription

14 properties

JSON SCHEMA

Thread

12 properties

JSON SCHEMA

Scroll for all 8

Security Posture 3

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

ThreadPage Authentication

1 scheme

SECURITY

ThreadPage Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

ThreadPage Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

ThreadPage Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

ThreadPage Agentic Access

62 operations · 37 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

DeveloperPortal

DeveloperPortal

Documentation 3

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

AIPreferences

AIPreferences

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Webhooks

Scroll for all 10

Build 2

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

Authentication

Authentication

SecurityTxt

SecurityTxt

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Support

Support

Commercial 6

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

UsageTerms

DataLicense

Company 2

The organization behind the API

Newsroom

Newsroom

Website

Website

Other 4

Properties that don't map to a standard resource type

Hosts

Vendors

DataProcessing

Eligibility

Source (apis.yml)

aid: thread-page
name: ThreadPage
description: ThreadPage is a web‑based notes application that organizes each project or client into its own threaded sequence
  of notes. Users can add text, checklists, tables, images, and files, and share threads with collaborators. Pro plans integrate
  AI assistants such as Claude Code, ChatGPT or Codex, which can read and augment notes via API keys. The service runs in
  browsers and offers iOS and Android apps, with free unlimited usage for basic notes and paid tiers for storage and AI features.
url: https://artifacts.apis.io/thread-page/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-06 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  probe_state: gated
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-06'
modified: '2026-11-06'
tags:
- Notes
- Collaboration
- Productivity
- Artificial Intelligence
- Web App
tags_raw:
- notes
- collaboration
- productivity
- AI
- web-app
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://thread.page/og/home-2026-11-02.png
common:
- type: AgenticAccess
  url: agentic-access/thread-page-agentic-access.yml
- type: RateLimits
  url: rate-limits/thread-page-rate-limits.yml
- type: Plans
  url: plans/thread-page-plans-pricing.yml
- type: Spectral
  url: rules/thread-page-rules.yml
- type: JSONLD
  url: json-ld/thread-page-context.jsonld
- type: Vocabulary
  url: vocabulary/thread-page-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Webhooks
  url: asyncapi/thread-page-webhooks.yml
- type: DataModel
  url: data-model/thread-page-data-model.yml
- type: ChangeLog
  url: changelog/thread-page-changelog.yml
- type: Idempotency
  url: conventions/thread-page-conventions.yml
- type: Conventions
  url: conventions/thread-page-conventions.yml
- type: Authentication
  url: authentication/thread-page-authentication.yml
- type: ErrorCatalog
  url: errors/thread-page-problem-types.yml
- type: Conformance
  url: conformance/thread-page-conformance.yml
- type: LLMsTxt
  url: llms/thread-page-llms.txt
- type: ToolCrosswalk
  url: mcp/thread-page-tool-crosswalk.yml
- type: MCPServer
  url: mcp/thread-page-mcp.yml
- type: SecurityTxt
  url: well-known/thread-page-security.txt
- type: WellKnown
  url: well-known/thread-page-well-known.yml
- type: Hosts
  url: hosts/thread-page-hosts.yml
- type: Vendors
  url: vendors/thread-page-vendors.yml
- type: Webhooks
  url: https://thread.page/help/connections/webhooks
- type: Security
  url: https://thread.page/help/connections/security
- type: Newsroom
  url: https://thread.page/community/news
- type: APIReference
  url: https://thread.page/help/connections/changelog
- type: VulnerabilityDisclosure
  url: security/thread-page-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/thread-page-domain-security.yml
- type: Website
  url: https://thread.page
- type: Documentation
  url: https://thread.page/help/connections/custom
- type: Pricing
  url: https://thread.page/pricing
- type: TermsOfService
  url: https://thread.page/terms
- type: PrivacyPolicy
  url: https://thread.page/privacy
- type: Support
  url: https://thread.page/contact
- type: SignUp
  url: https://thread.page/app
- type: GitHubOrganization
  url: https://github.com/ThreadPage
- type: DeveloperPortal
  url: https://thread.page/help
- type: UsageTerms
  url: terms/thread-page-terms-of-service.yml
- type: DataProcessing
  url: privacy/thread-page-privacy-policy.yml
- type: Eligibility
  url: eligibility/thread-page-eligibility.yml
- type: AIPreferences
  url: ai-preferences/thread-page-ai-preferences.yml
- type: DataLicense
  url: data-license/thread-page-data-license.yml
apis:
- aid: thread-page:thread-page-endpoint-urls-api
  name: ThreadPage Endpoint URLs API
  description: The Endpoint URLs API from ThreadPage — 1 operation(s) for endpoint urls.
  humanURL: https://thread.page/help/connections/custom
  baseURL: https://thread.page
  tags:
  - Endpoint URLs
  properties:
  - type: OpenAPI
    url: openapi/thread-page-endpoint-urls-api-openapi.yml
  - type: JSONSchema
    url: json-schema/thread-page-inbound-outcome-schema.json
  - type: JSONSchema
    url: json-schema/thread-page-inbound-challenge-schema.json
- aid: thread-page:thread-page-events-api
  name: ThreadPage Events API
  description: The Events API from ThreadPage — 8 operation(s) for events.
  humanURL: https://thread.page/help/connections/custom
  baseURL: https://thread.page
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/thread-page-events-api-openapi.yml
  - type: JSONSchema
    url: json-schema/thread-page-subscription-schema.json
  - type: JSONSchema
    url: json-schema/thread-page-delivery-schema.json
- aid: thread-page:thread-page-integration-api-api
  name: ThreadPage Integration API
  description: The Integration API API from ThreadPage — 37 operation(s) for integration api.
  humanURL: https://thread.page/help/connections/custom
  baseURL: https://thread.page
  tags: []
  tags_raw:
  - Integration API
  properties:
  - type: OpenAPI
    url: openapi/thread-page-integration-api-api-openapi.yml
  - type: JSONSchema
    url: json-schema/thread-page-note-schema.json
  - type: JSONSchema
    url: json-schema/thread-page-connection-info-schema.json
  - type: JSONSchema
    url: json-schema/thread-page-thread-schema.json
- aid: thread-page:thread-page-requests-api
  name: ThreadPage Requests API
  description: The Requests API from ThreadPage — 5 operation(s) for requests.
  humanURL: https://thread.page/help/connections/custom
  baseURL: https://thread.page
  tags:
  - Requests
  properties:
  - type: OpenAPI
    url: openapi/thread-page-requests-api-openapi.yml
  - type: JSONSchema
    url: json-schema/thread-page-executor-request-schema.json
x-submission-notes: Integration API
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-11-06'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://thread.page/mcp
    status: 401
  - url: https://thread.page
    status: 200
x-enrichment:
  date: '2026-11-06'
  status: enriched
  artifacts_added: 36
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

ThreadPage API — frequently asked questions

Does ThreadPage have an API?

Yes. APIs.io lists 4 APIs from ThreadPage, including ThreadPage Endpoint URLs API, ThreadPage Events API and ThreadPage Integration API, and 1 more.

Is there an OpenAPI specification for the ThreadPage API?

Yes. APIs.io indexes 4 OpenAPI specifications for ThreadPage, each linked for download from this page.

How do I authenticate with the ThreadPage API?

ThreadPage documents its authentication (1 scheme). The details are profiled on APIs.io as ThreadPage Authentication.

How much does the ThreadPage API cost?

ThreadPage publishes its prices; its Pro (Monthly) plan is USD 7.99 every month as of 2026-11-07. APIs.io lists 7 pricing plans for ThreadPage, with each plan's price, limits and inclusions under Pricing on this page.

Does ThreadPage have an MCP server?

Yes. APIs.io lists 1 MCP server for ThreadPage: Remote MCP server at thread.page requiring an API key.

Is the ThreadPage API ready for AI agents?

ThreadPage has a Kin Score of 66.1 out of 100 (strong) and an Agent Readiness score of 61.4 (agent-native), scored by API Evangelist on 2026-11-13.

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