GTD Brain

GTD Brain is an AI‑powered productivity app that helps users implement the Getting Things Done methodology. It captures tasks, lets an AI sort them into next actions, and supports web, iOS and Android platforms. The service aims to provide a calmer way to get things done, offering features like AI‑driven task sorting, weekly reviews, and cross‑platform syncing.

GTD Brain is profiled on the APIs.io network. Tagged areas include Productivity, GTD, Artificial Intelligence, Task Management, and Cross-Platform.

GTD Brain’s developer surface includes support, pricing, engineering blog, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.3/100 emerging Agent 19/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

0 APIs

ProductivityGTDArtificial Intelligence Task Management Cross-Platform

Kin Score

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

Composite quality — 18.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 7.2 / 17

Operational Transparency 1.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.0 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 19/100 · 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 0 / 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 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 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 Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →

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 Ask about this →
Developer Ergonomics scores 7.1 — up to +18.6 composite points Ask about this →
Contract Governance scores 0.0 — up to +12.0 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.

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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/gtdbrain-com/apis.yml: open an issue on github.com/api-evangelist/gtdbrain-com 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 2

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 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

GTD Brain API pricing

Prices published by GTD Brain, read 2026-11-11 from gtdbrain.com/pricing.

Plan	Price
Monthly	$19.99/ month
Annual	$143.88/ year

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

GTD Brain Plans Pricing

2 plans

PLANS

Security Posture 2

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

GTD Brain Domain Security

TLSv1.3

SECURITY

GTD Brain Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Access & Security 5

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: gtdbrain-com
name: GTD Brain
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  probe_state: none
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://gtdbrain.com/opengraph-image?be6da9078189c9d9
description: GTD Brain is an AI‑powered productivity app that helps users implement the Getting Things Done methodology. It
  captures tasks, lets an AI sort them into next actions, and supports web, iOS and Android platforms. The service aims to
  provide a calmer way to get things done, offering features like AI‑driven task sorting, weekly reviews, and cross‑platform
  syncing.
url: https://artifacts.apis.io/gtdbrain-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-11 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-10'
modified: '2026-11-10'
tags:
- Productivity
- GTD
- Artificial Intelligence
- Task Management
- Cross-Platform
tags_raw:
- Productivity
- GTD
- AI
- Task Management
- Cross‑Platform
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/gtdbrain-com-plans-pricing.yml
- type: Security
  url: security/gtdbrain-com-vulnerability-disclosure.yml
- type: LLMsTxt
  url: llms/gtdbrain-com-llms.txt
- type: SecurityTxt
  url: well-known/gtdbrain-com-security.txt
- type: SecurityTxt
  url: well-known/gtdbrain-com-dashboard-security.txt
- type: WellKnown
  url: well-known/gtdbrain-com-well-known.yml
- type: Hosts
  url: hosts/gtdbrain-com-hosts.yml
- type: TermsOfService
  url: https://gtdbrain.com/terms
- type: Support
  url: https://gtdbrain.com/support
- type: PrivacyPolicy
  url: https://gtdbrain.com/privacy
- type: Pricing
  url: https://gtdbrain.com/pricing
- type: Blog
  url: https://gtdbrain.com/blog
- type: VulnerabilityDisclosure
  url: security/gtdbrain-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/gtdbrain-com-domain-security.yml
- type: Website
  url: https://gtdbrain.com/
apis: []
x-coverage:
  state: none
  reason: no-developer-program
  detail: The provider's website and docs contain no public API documentation or machine‑readable contract.
  evidence:
  - url: https://api.gtdbrain.com/openapi.json
    status: 0
  checked: '2026-11-11'
x-enrichment:
  date: '2026-11-11'
  status: enriched
  artifacts_added: 16
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

GTD Brain API — frequently asked questions

How much does the GTD Brain API cost?

GTD Brain publishes its prices; its Monthly plan is $19.99/ month as of 2026-11-11. APIs.io lists 2 pricing plans for GTD Brain, with each plan's price, limits and inclusions under Pricing on this page.

Is the GTD Brain API ready for AI agents?

GTD Brain has a Kin Score of 18.3 out of 100 (emerging) and an Agent Readiness score of 18.7 (agent-aware), scored by API Evangelist on 2026-11-13.

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