Fabling

Fabling is a language learning platform that provides comprehensible input through leveled stories, customized spoken podcasts, and a real-time AI speaking tutor. It helps users practice Spanish and French with personalized content, vocabulary review, and speaking practice, making language learning personal and engaging.

Fabling is listed with 1 API on the APIs.io network. Tagged areas include Language Learning, Education, Artificial Intelligence, Personalized, and Stories.

Fabling’s developer surface includes engineering blog, signup flow, support, documentation, API reference, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

19.1/100 emerging Agent 21/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessOpen

1 API

Language Learning Education Artificial Intelligence Personalized Stories

Kin Score

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

Composite quality — 19.1/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 6.9 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 3.3 / 15

Agent readiness — 21/100 · 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 7 / 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 Education & Research 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 →

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 0.0 — up to +25.0 composite points Ask about this →
Developer Ergonomics scores 23.8 — up to +15.2 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 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.

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/fabling-app/apis.yml: open an issue on github.com/api-evangelist/fabling-app 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)

APIs 1

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

Fabling API

API documentation is behind a sign‑in page; public machine‑readable contract not available.

Fabling API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Fabling Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fabling Rate Limits

0 limits

RATE LIMITS

Terms of Service 1

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

Fabling

8 quoted statements, read from Fabling's own page on 2026-11-09.

TERMS

Privacy & Data 1

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

Fabling

14 quoted statements, read from Fabling's own page on 2026-11-09.

PRIVACY

Eligibility 1

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

Fabling

3 quoted statements, read from Fabling's own page on 2026-11-09.

ELIGIBILITY

AI Preferences 1

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

Fabling

1 quoted statement, read from Fabling's own page on 2026-11-09.

AI PREFS

Security Posture 2

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

Fabling Authentication

0 schemes

SECURITY

Fabling Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Fabling Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

AIPreferences

AIPreferences

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

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

UsageTerms

UsageTerms

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

Hosts

Vendors

DataProcessing

Eligibility

Source (apis.yml)

aid: fabling-app
name: Fabling
description: Fabling is a language learning platform that provides comprehensible input through leveled stories, customized
  spoken podcasts, and a real-time AI speaking tutor. It helps users practice Spanish and French with personalized content,
  vocabulary review, and speaking practice, making language learning personal and engaging.
url: https://artifacts.apis.io/fabling-app/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  probe_state: gated
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Language Learning
- Education
- Artificial Intelligence
- Personalized
- Stories
tags_raw:
- Language Learning
- Education
- AI
- Personalized
- Stories
image: https://fabling.app/brand/og-default.jpg
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: LLMsTxt
  url: llms/fabling-app-llms.txt
- type: WellKnown
  url: well-known/fabling-app-well-known.yml
- type: Hosts
  url: hosts/fabling-app-hosts.yml
- type: Vendors
  url: vendors/fabling-app-vendors.yml
- type: DomainSecurity
  url: security/fabling-app-domain-security.yml
- type: Website
  url: https://fabling.app/
- type: Blog
  url: https://fabling.app/blog
- type: PrivacyPolicy
  url: https://fabling.app/privacy
- type: SignUp
  url: https://fabling.app/start
- type: Support
  url: https://fabling.app/connect/help
- type: TermsOfService
  url: https://fabling.app/terms
- type: Documentation
  url: https://fabling.app/api
- type: APIReference
  url: https://fabling.app/api
- type: UsageTerms
  url: terms/fabling-app-terms-of-service.yml
- type: DataProcessing
  url: privacy/fabling-app-privacy-policy.yml
- type: Eligibility
  url: eligibility/fabling-app-eligibility.yml
- type: AIPreferences
  url: ai-preferences/fabling-app-ai-preferences.yml
apis:
- name: Fabling API
  description: API documentation is behind a sign‑in page; public machine‑readable contract not available.
  humanURL: https://fabling.app/api
  aid: fabling-app:fabling-api
x-coverage:
  state: gated
  reason: auth-required
  detail: API documentation requires sign‑in; no public contract available.
  evidence:
  - url: https://fabling.app/api
    status: 200
  checked: '2026-11-07'
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Fabling API — frequently asked questions

Does Fabling have an API?

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

How do I authenticate with the Fabling API?

Fabling documents its authentication (0 schemes). The details are profiled on APIs.io as Fabling Authentication.

Is the Fabling API ready for AI agents?

Fabling has a Kin Score of 19.1 out of 100 (emerging) and an Agent Readiness score of 21.2 (agent-aware), scored by API Evangelist on 2026-11-13.

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