CryptoETF

CryptoETF provides market data and analytics on US spot crypto ETFs, offering daily inflows and outflows, fund holdings, and issuer breakdowns across 16 assets including Bitcoin, Ethereum, Solana, XRP, and more. It serves worldwide users with comprehensive financial data and insights.

CryptoETF publishes 2 API contracts indexed on the APIs.io network, including API V1 API, and 1 more. Tagged areas include Cryptocurrency, ETFs, Market Data, Analytics, and Finance.

The CryptoETF catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

CryptoETF’s developer surface includes support, pricing, changelog, engineering blog, documentation, API reference, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.6/100 developing Agent 14/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

Cryptocurrency ETFs Market Data Analytics Finance

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 46.6/100 · developing

Contract Quality 10.8 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 13.0 / 17

Operational Transparency 3.5 / 11

Contract Governance 2.2 / 10

Discoverability 5.8 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 14/100 · agent aware

Machine-Readable Contract 18 / 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 8 / 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

MCP Tool Quality 6 / 6

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/.

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

11 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 23.8 — up to +15.2 composite points
Contract Quality scores 50.7 — up to +12.3 composite points
Contract Governance scores 22.0 — up to +9.4 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/cryptoetf-today/apis.yml: open an issue on github.com/api-evangelist/cryptoetf-today 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 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

CryptoETF API

Free REST API for US spot crypto ETF data, providing flows, fund info, pricing and analytics.

CryptoETF API V1 API

Free REST API for US spot crypto ETF data: daily net flows for 16 assets and for every fund behind them (IBIT, FBTC, ETHA, …), a fund directory with net assets (AUM), the CEFI —...

CryptoETF API pricing

Prices published by CryptoETF, read 2026-11-04 from cryptoetf.today/en/pricing.

Plan	Price
Free	$0
Builder	$24/mo
Commercial	$124/mo
Enterprise	Custom Priced by volume and use

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Cryptoetf Today Plans Pricing

4 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Cryptoetf Today Context

21 classes · 59 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

CryptoETF API Rules

60 rules · 57 errors 1 warnings 2 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

AssetFlowsDto

5 properties

JSON SCHEMA

AssetFundFlowsDto

5 properties

JSON SCHEMA

CefiIndexDto

6 properties

JSON SCHEMA

FundsDto

3 properties

JSON SCHEMA

PricesDto

2 properties

JSON SCHEMA

WeeklyAnalyticsDto

3 properties

JSON SCHEMA

Security Posture 1

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

Cryptoetf Today Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Conformance

DataModel

ErrorCatalog

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 3

The organization behind the API

Newsroom

Newsroom

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: cryptoetf-today
name: CryptoETF
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://cryptoetf.today/og?type=home
description: CryptoETF provides market data and analytics on US spot crypto ETFs, offering daily inflows and outflows, fund
  holdings, and issuer breakdowns across 16 assets including Bitcoin, Ethereum, Solana, XRP, and more. It serves worldwide
  users with comprehensive financial data and insights.
url: https://artifacts.apis.io/cryptoetf-today/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Cryptocurrency
- ETFs
- Market Data
- Analytics
- Finance
tags_raw:
- Crypto
- ETF
- MarketData
- Analytics
- Finance
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/cryptoetf-today-rules.yml
- type: JSONLD
  url: json-ld/cryptoetf-today-context.jsonld
- type: Vocabulary
  url: vocabulary/cryptoetf-today-vocabulary.yml
- type: Conformance
  url: conformance/cryptoetf-today-conformance.yml
- type: Plans
  url: plans/cryptoetf-today-plans-pricing.yml
- type: DataModel
  url: data-model/cryptoetf-today-data-model.yml
- type: ErrorCatalog
  url: errors/cryptoetf-today-problem-types.yml
- type: LLMsTxt
  url: llms/cryptoetf-today-llms.txt
- type: Hosts
  url: hosts/cryptoetf-today-hosts.yml
- type: Vendors
  url: vendors/cryptoetf-today-vendors.yml
- type: TermsOfService
  url: https://cryptoetf.today/en/terms
- type: Support
  url: https://cryptoetf.today/en/support
- type: StatusPage
  url: https://status.cryptoetf.today/
- type: PrivacyPolicy
  url: https://cryptoetf.today/en/privacy
- type: Pricing
  url: https://cryptoetf.today/en/pricing
- type: Newsroom
  url: https://cryptoetf.today/en/news
- type: Login
  url: https://cryptoetf.today/en/login
- type: ChangeLog
  url: https://docs.cryptoetf.today/guide/changelog/
- type: Blog
  url: https://cryptoetf.today/en/blog
- type: Documentation
  url: https://docs.cryptoetf.today/
- type: APIReference
  url: https://docs.cryptoetf.today/reference/funds/
- type: DomainSecurity
  url: security/cryptoetf-today-domain-security.yml
- type: Website
  url: https://cryptoetf.today/
apis:
- name: CryptoETF API
  description: Free REST API for US spot crypto ETF data, providing flows, fund info, pricing and analytics.
  humanURL: https://docs.cryptoetf.today/
  baseURL: https://api.cryptoetf.today/v1
  aid: cryptoetf-today:cryptoetf-api
- aid: cryptoetf-today:cryptoetf-api-v1-api
  name: CryptoETF API V1 API
  description: 'Free REST API for US spot crypto ETF data: daily net flows for 16 assets and for every fund behind them (IBIT,
    FBTC, ETHA, …),

    a fund directory with net assets (AUM), the CEFI — Crypto ETF Flow Index, spot prices of the coins and weekly totals.
    These are the numbers

    behind [cryptoetf.today](https://'
  humanURL: https://api.cryptoetf.today/v1/openapi.json
  baseURL: https://api.cryptoetf.today/api
  properties:
  - type: OpenAPI
    url: openapi/_original/cryptoetf-today-v1-openapi.json
  - type: JSONSchema
    url: json-schema/cryptoetf-today-cefi-index-dto-schema.json
  - type: JSONSchema
    url: json-schema/cryptoetf-today-asset-flows-dto-schema.json
  - type: JSONSchema
    url: json-schema/cryptoetf-today-asset-fund-flows-dto-schema.json
  - type: JSONSchema
    url: json-schema/cryptoetf-today-funds-dto-schema.json
  - type: JSONSchema
    url: json-schema/cryptoetf-today-weekly-analytics-dto-schema.json
  - type: JSONSchema
    url: json-schema/cryptoetf-today-prices-dto-schema.json
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 13
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

CryptoETF API — frequently asked questions

Does CryptoETF have an API?

Yes. APIs.io lists 2 APIs from CryptoETF, including CryptoETF API and CryptoETF API V1 API.

Is there an OpenAPI specification for the CryptoETF API?

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

How much does the CryptoETF API cost?

CryptoETF publishes its prices; its Free plan is $0 as of 2026-11-04. APIs.io lists 4 pricing plans for CryptoETF, with each plan's price, limits and inclusions under Pricing on this page.

Is the CryptoETF API ready for AI agents?

CryptoETF has a Kin Score of 46.6 out of 100 (developing) and an Agent Readiness score of 13.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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