Skylight

Skylight provides a smart profiling platform for Ruby and Rails applications, turning performance data into actionable insights. It helps developers identify bottlenecks, understand slowdowns, and improve application speed through detailed tracing and analytics. The service offers a free tier with 100,000 traces per month and paid plans starting at $20, catering to teams of all sizes.

Skylight is profiled on the APIs.io network. Tagged areas include Performance, Ruby, Rails, Monitoring, and Profiling.

Skylight’s developer surface includes documentation, engineering blog, pricing, support, signup flow, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

25.6/100 emerging Agent 0/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

Performance RubyRailsMonitoring Profiling Company

Kin Score

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

Composite quality — 25.6/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 11.2 / 17

Operational Transparency 2.9 / 11

Contract Governance 0.0 / 10

Discoverability 3.8 / 9

Regulatory Posture 2.1 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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

13 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
Developer Ergonomics scores 23.8 — up to +15.2 composite points
Contract Governance scores 0.0 — up to +12.0 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/skylight/apis.yml: open an issue on github.com/api-evangelist/skylight 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 →

Pricing Plans 1

Published pricing tiers and plan structures.

Skylight Plans Pricing

2 plans

PLANS

Security Posture 1

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

Skylight Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Contact

Contact

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

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: skylight
name: Skylight
description: Skylight provides a smart profiling platform for Ruby and Rails applications, turning performance data into actionable
  insights. It helps developers identify bottlenecks, understand slowdowns, and improve application speed through detailed
  tracing and analytics. The service offers a free tier with 100,000 traces per month and paid plans starting at $20, catering
  to teams of all sizes.
url: https://raw.githubusercontent.com/api-evangelist/skylight/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-27'
modified: '2026-10-27'
tags:
- Performance
- Ruby
- Rails
- Monitoring
- Profiling
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Documentation
  url: https://docs.skylight.io/
- type: Plans
  url: plans/skylight-plans-pricing.yml
- type: SecurityTxt
  url: well-known/skylight-status-security.txt
- type: WellKnown
  url: well-known/skylight-well-known.yml
- type: Hosts
  url: hosts/skylight-hosts.yml
- type: SDKs
  url: packages/skylight-packages.yml
- type: Packages
  url: packages/skylight-packages.yml
- type: DomainSecurity
  url: security/skylight-domain-security.yml
- type: Website
  url: https://www.skylight.io/
- type: Blog
  url: https://blog.skylight.io/
- type: Pricing
  url: https://www.skylight.io/pricing
- type: Support
  url: https://www.skylight.io/support
- type: SignUp
  url: https://www.skylight.io/signup
- type: Login
  url: https://www.skylight.io/login
- type: TermsOfService
  url: https://www.skylight.io/tos
- type: PrivacyPolicy
  url: https://www.skylight.io/privacy
- type: StatusPage
  url: http://status.skylight.io
- type: Contact
  url: https://www.skylight.io/contact
apis: []
x-submission-probe: 301 (-> https://www.skylight.io:443) 2026-10-25
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: Documentation pages are served as JavaScript shells requiring a browser to render.
  evidence:
  - url: https://www.skylight.io/docs
    status: 200
  checked: '2026-10-27'
x-enrichment:
  date: '2026-10-27'
  status: enriched
  artifacts_added: 11
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Skylight API — frequently asked questions

How much does the Skylight API cost?

APIs.io lists 2 pricing plans for Skylight, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Skylight API ready for AI agents?

Skylight has a Kin Score of 25.6 out of 100 (emerging) and an Agent Readiness score of 0.0 (human-only), scored by API Evangelist on 2026-10-31.

Work with this as data

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find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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