capslane-com

Capslane provides a YouTube Transcript API that offers reliable fallback using AI to generate transcripts when captions are missing. It supports retrieving captions from public YouTube videos, automatic caption generation, and delivers results with timestamps, language selection, and structured segments. The service includes asynchronous job handling for longer videos, quota management, and a free tier of 50 requests. Documentation, integrations, pricing, and a playground are available on the site.

capslane-com publishes 1 API contract indexed on the APIs.io network: Transcript API. Tagged areas include Company, API, YouTube, Transcript, and AI.

The capslane-com catalog on APIs.io includes 1 Spectral governance ruleset.

capslane-com’s developer surface includes changelog, authentication, documentation, API reference, getting-started guide, pricing, signup flow, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

55.9/100 strong Agent 35/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract

CompanyAPIYouTube TranscriptAI

Kin Score

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

Composite quality — 55.9/100 · strong

Contract Quality 10.0 / 21

Developer Ergonomics 6.9 / 17

Access Clarity 12.4 / 17

Operational Transparency 3.5 / 11

Contract Governance 8.1 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

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)
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

6 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 47.1 — up to +13.2 composite points
Developer Ergonomics scores 40.5 — up to +11.9 composite points
Operational Transparency scores 31.6 — up to +8.9 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/capslane-com/apis.yml: open an issue on github.com/api-evangelist/capslane-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 →

APIs 1

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

capslane-com Transcript API

YouTube transcript extraction and generation

Pricing Plans 1

Published pricing tiers and plan structures.

Capslane Com Plans Pricing

4 plans

PLANS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

capslane-com API Rules

16 rules · 14 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Capslane Com Authentication

apiKey · 1 scheme

SECURITY

Capslane Com Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Capslane Com Agentic Access

3 operations

3 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

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

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: capslane-com
name: capslane-com
image: https://capslane.com/og-capslane.png
description: Capslane provides a YouTube Transcript API that offers reliable fallback using AI to generate transcripts when
  captions are missing. It supports retrieving captions from public YouTube videos, automatic caption generation, and delivers
  results with timestamps, language selection, and structured segments. The service includes asynchronous job handling for
  longer videos, quota management, and a free tier of 50 requests. Documentation, integrations, pricing, and a playground
  are available on the site.
url: https://artifacts.apis.io/capslane-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- API
- YouTube
- Transcript
- AI
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/capslane-com-agentic-access.yml
- type: Plans
  url: plans/capslane-com-plans-pricing.yml
- type: Spectral
  url: rules/capslane-com-rules.yml
- type: Vocabulary
  url: vocabulary/capslane-com-vocabulary.yml
- type: ErrorCatalog
  url: errors/capslane-com-problem-types.yml
- type: Conformance
  url: conformance/capslane-com-conformance.yml
- type: LLMsTxt
  url: llms/capslane-com-llms.txt
- type: Hosts
  url: hosts/capslane-com-hosts.yml
- type: TermsOfService
  url: https://capslane.com/terms
- type: StatusPage
  url: https://capslane.com/status
- type: PrivacyPolicy
  url: https://capslane.com/privacy
- type: ChangeLog
  url: https://capslane.com/changelog
- type: Authentication
  url: authentication/capslane-com-authentication.yml
- type: DomainSecurity
  url: security/capslane-com-domain-security.yml
- type: Website
  url: https://capslane.com/
- type: Documentation
  url: https://capslane.com/docs
- type: APIReference
  url: https://capslane.com/api-reference
- type: GettingStarted
  url: https://capslane.com/playground
- type: Pricing
  url: https://capslane.com/pricing
- type: SignUp
  url: https://capslane.com/auth/login
apis:
- aid: capslane-com:capslane-com-transcript-api
  name: capslane-com Transcript API
  description: YouTube transcript extraction and generation
  humanURL: https://capslane.com/api-reference
  baseURL: https://capslane.com
  tags:
  - Transcript
  properties:
  - type: OpenAPI
    url: openapi/capslane-com-transcript-api-openapi.yml
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-30'
  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://capslane.com/openapi.json
    status: null
  - url: https://capslane.com/mcp
    status: 401
  - url: https://capslane.com/
    status: 200
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 18
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

capslane-com API — frequently asked questions

Does capslane-com have an API?

Yes. APIs.io lists 1 API from capslane-com, including capslane-com Transcript API.

Is there an OpenAPI specification for the capslane-com API?

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

How do I authenticate with the capslane-com API?

capslane-com uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Capslane Com Authentication.

How much does the capslane-com API cost?

APIs.io lists 4 pricing plans for capslane-com, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the capslane-com API ready for AI agents?

capslane-com has a Kin Score of 55.9 out of 100 (strong) and an Agent Readiness score of 35.1 (agent-ready), scored by API Evangelist on 2026-10-31.

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