TickerInside

TickerInside provides a free, open, machine‑readable JSON API of US ETF holdings. It serves each fund's holdings with weights, source dates, and links to securities, enabling programs and assistants to query ETF compositions without authentication. Data is sourced from issuer filings and SEC documents, offered under CC BY 4.0 (holdings history has separate terms).

TickerInside is listed with 1 API on the APIs.io network. Tagged areas include ETF, finance, open-data, SEC-filings, and holdings.

TickerInside’s developer surface includes CLI, support, API reference, documentation, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
23.3/100 emerging Agent 5/100 agent aware Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0
1 API
ETFfinanceopen-dataSEC-filingsholdings

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0
Composite quality — 23.3/100 · emerging
Contract Quality 0.0 / 21
Developer Ergonomics 6.1 / 17
Access Clarity 3.6 / 17
Operational Transparency 2.9 / 11
Contract Governance 1.7 / 10
Discoverability 5.3 / 9
Regulatory Posture 3.5 / 15
Agent readiness — 5/100 · agent aware
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 7 / 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
Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data 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/.
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 github.com/api-evangelist/tickerinside: open an issue to ask a question, or submit a pull request to add artifacts. 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.

TickerInside API

Holdings of 5,244 US ETFs as static JSON, no auth.

Rate Limits 1

Documented rate limits and quota policies.

Tickerinside Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Tickerinside Domain Security

TLSv1.3 · HSTS

SECURITY

Tickerinside Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Documentation 3

Reference material describing how the API behaves

APIReference
APIReference
 Documentation
Documentation
 OpenAPI
OpenAPI

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

CLI
CLI
 SDKs
SDKs
 Packages
Packages

Access & Security 4

Authentication, authorization, and security posture

Security
Security
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Website
Website

Other 2

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: tickerinside
name: TickerInside
description: TickerInside provides a free, open, machine‑readable JSON API of US ETF holdings. It serves each fund's holdings
  with weights, source dates, and links to securities, enabling programs and assistants to query ETF compositions without
  authentication. Data is sourced from issuer filings and SEC documents, offered under CC BY 4.0 (holdings history has separate
  terms).
url: https://raw.githubusercontent.com/api-evangelist/tickerinside/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-06 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-06'
modified: '2026-10-06'
tags:
- ETF
- finance
- open-data
- SEC-filings
- holdings
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CLI
  url: cli/tickerinside-cli.yml
- type: Security
  url: security/tickerinside-vulnerability-disclosure.yml
- type: Conformance
  url: conformance/tickerinside-conformance.yml
- type: LLMsTxt
  url: llms/tickerinside-llms.txt
- type: SecurityTxt
  url: well-known/tickerinside-security.txt
- type: WellKnown
  url: well-known/tickerinside-well-known.yml
- type: Hosts
  url: hosts/tickerinside-hosts.yml
- type: Vendors
  url: vendors/tickerinside-vendors.yml
- type: SDKs
  url: packages/tickerinside-packages.yml
- type: Packages
  url: packages/tickerinside-packages.yml
- type: Support
  url: https://tickerinside.com/support/
- type: StatusPage
  url: https://tickerinside.com/status/
- type: APIReference
  url: https://tickerinside.com/api/
- type: VulnerabilityDisclosure
  url: security/tickerinside-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/tickerinside-domain-security.yml
- type: Website
  url: https://tickerinside.com/apis.json
- type: Documentation
  url: https://tickerinside.com/api
- type: OpenAPI
  url: https://tickerinside.com/api/openapi.json
- type: TermsOfService
  url: https://tickerinside.com/legal/
- type: PrivacyPolicy
  url: https://tickerinside.com/api/#privacy
apis:
- name: TickerInside API
  description: Holdings of 5,244 US ETFs as static JSON, no auth.
  humanURL: https://tickerinside.com/api
  baseURL: https://tickerinside.com/api/v1
  aid: tickerinside:tickerinside-api
x-submission-notes: 'relist check: clear: not on the delisting registry. Data sourced from issuer files / SEC filings (CC
  BY 4.0, holdings history separate terms) -- public-data republishing, not platform scraping. Submitter asks for the whole
  /api/v1/ API.'
x-submission-probe: root 200; /apis.json 200 application/apis+json (0.19); /api/openapi.json 200, 16 paths, server https://tickerinside.com/api/v1,
  no auth; /llms.txt 200; /docs and invented path 404 (real 404). GET /api/v1/fund/SPY.json -> 301 -> spy.json 200 real holdings
  JSON; unknown endpoint -> 404 JSON not_covered. MCP POST https://tickerinside.com/mcp initialize -> 200, serverInfo tickerinside
  1.8.0, tools+prompts.
x-submitted-by: contact@tickerinside.com (apis.io/add, 2026-10-06T10:09:47.987Z)
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  method: derived
  generated: '2026-10-06'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company publishes developer documentation but serves no machine-readable contract from it
  evidence:
  - url: https://tickerinside.com/mcp
    status: null
  - url: https://tickerinside.com/apis.json
    status: 200
x-enrichment:
  date: '2026-10-06'
  status: enriched
  artifacts_added: 15
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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