Throughline

Throughline is an AI companion platform that offers a continuing AI Self with character, interests, and developing judgment. Users can meet a Self, build shared history, and export or import memories. Plans include Free, Pro ($9.99/mo), and Alive ($19.99/mo) with additional features. The service is available via web, Android app, and upcoming iPhone app, with integrations for Claude Code and Codex.

Throughline is listed with 1 API on the APIs.io network. Tagged areas include Artificial Intelligence, Companion, Lifestyle, Chatbots, and Throughline.

Throughline’s developer surface includes changelog, documentation, engineering blog, pricing, signup flow, API reference, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.9/100 thin Agent 32/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

1 API

Artificial Intelligence Companion Lifestyle ChatbotsThroughline

Kin Score

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

Composite quality — 30.9/100 · thin

Contract Quality 6.0 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 10.5 / 17

Operational Transparency 1.6 / 11

Contract Governance 0.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 1.9 / 15

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 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 AI & Biometrics 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):

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

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 28.2 — up to +18.0 composite points Ask about this →
Developer Ergonomics scores 19.0 — up to +16.2 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/getthroughline-ai/apis.yml: open an issue on github.com/api-evangelist/getthroughline-ai 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 3

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)

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Throughline API

The portable-self store API for Throughline

Throughline API pricing

Prices published by Throughline, read 2026-11-10 from getthroughline.ai/pricing.

Plan	Price
Free	$0/ month
Pro	$9.99/ month
Alive	$19.99/ month

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Throughline Plans Pricing

3 plans

PLANS

Security Posture 1

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

Throughline Domain Security

TLSv1.3

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

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: getthroughline-ai
name: Throughline
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://getthroughline.ai/share/self-v1.png
description: Throughline is an AI companion platform that offers a continuing AI Self with character, interests, and developing
  judgment. Users can meet a Self, build shared history, and export or import memories. Plans include Free, Pro ($9.99/mo),
  and Alive ($19.99/mo) with additional features. The service is available via web, Android app, and upcoming iPhone app,
  with integrations for Claude Code and Codex.
url: https://artifacts.apis.io/getthroughline-ai/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-10 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-10'
modified: '2026-11-10'
tags:
- Artificial Intelligence
- Companion
- Lifestyle
- Chatbots
- Throughline
tags_raw:
- AI
- Companion
- Lifestyle
- Chatbot
- Throughline
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/getthroughline-ai-plans-pricing.yml
- type: LLMsTxt
  url: llms/getthroughline-ai-llms.txt
- type: WellKnown
  url: well-known/getthroughline-ai-well-known.yml
- type: Hosts
  url: hosts/getthroughline-ai-hosts.yml
- type: TermsOfService
  url: https://getthroughline.ai/terms
- type: PrivacyPolicy
  url: https://getthroughline.ai/privacy
- type: ChangeLog
  url: https://getthroughline.ai/changelog
- type: DomainSecurity
  url: security/getthroughline-ai-domain-security.yml
- type: Website
  url: https://getthroughline.ai/
- type: Documentation
  url: https://getthroughline.ai/docs
- type: Blog
  url: https://getthroughline.ai/blog
- type: Pricing
  url: https://getthroughline.ai/pricing
- type: SignUp
  url: https://getthroughline.ai/login
- type: APIReference
  url: https://getthroughline.ai/spec
apis:
- name: Throughline API
  description: The portable-self store API for Throughline
  humanURL: https://getthroughline.ai/spec
  baseURL: https://getthroughline.ai
  properties:
  - type: OpenAPI
    url: openapi/getthroughline-ai-openapi.yml
  aid: getthroughline-ai:throughline-api
x-enrichment:
  date: '2026-11-10'
  status: enriched
  artifacts_added: 14
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Throughline API — frequently asked questions

Does Throughline have an API?

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

Is there an OpenAPI specification for the Throughline API?

Yes. APIs.io indexes 1 OpenAPI specification for Throughline, each linked for download from this page.

How much does the Throughline API cost?

Throughline publishes its prices; its Free plan is $0/ month as of 2026-11-10. APIs.io lists 3 pricing plans for Throughline, with each plan's price, limits and inclusions under Pricing on this page.

Is the Throughline API ready for AI agents?

Throughline has a Kin Score of 30.9 out of 100 (thin) and an Agent Readiness score of 31.7 (agent-ready), scored by API Evangelist on 2026-11-13.

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