Curios

Curios builds Web3, blockchain and AI technologies, offering a digital content marketplace for creators such as musicians, authors, comedians, and developers. The platform enables creators to sell directly to fans, retain 100% of revenue, and access audience data, while providing APIs for commerce, analytics, and integration. Curios also offers a mobile app and supports NFT and tokenized content, positioning itself as a creator‑first commerce solution.

Curios is listed with 7 APIs on the APIs.io network, including Collections API, Contracts API, Customers API, and 4 more. Tagged areas include Company, Marketplace, Web3, and Creators.

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

Curios’ developer surface includes authentication, support, pricing, getting-started guide, documentation, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.5/100 thin ▼ -6.3 Agent 17/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

7 APIs

Company Marketplace Web3 Creators

Kin Score

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

Composite quality — 28.5/100 · thin

Contract Quality 4.0 / 19

Developer Ergonomics 3.8 / 15

Access Clarity 7.1 / 15

Operational Transparency 0.0 / 10

Contract Governance 2.0 / 9

Discoverability 4.4 / 8

Regulatory Posture 3.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 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 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 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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):

Contract Quality scores 21.4 — up to +19.7 composite points
Developer Ergonomics scores 25.0 — up to +15.0 composite points
Operational Transparency scores 0.0 — up to +13.0 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/curios/apis.yml: open an issue on github.com/api-evangelist/curios 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 7

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

Curios Collections API

The Collections API from Curios — 2 operation(s) for collections.

Curios Contracts API

The Contracts API from Curios — 3 operation(s) for contracts.

Curios Customers API

The Customers API from Curios — 3 operation(s) for customers.

Curios Listings API

The Listings API from Curios — 2 operation(s) for listings.

Curios Orders API

The Orders API from Curios — 3 operation(s) for orders.

Curios Projects API

The Projects API from Curios — 2 operation(s) for projects.

Curios Tokens API

The Tokens API from Curios — 2 operation(s) for tokens.

Scroll for all 7

Curios API pricing

Prices published by Curios, read 2026-10-12 from studio.curios.com/kb/pricing.

Plan	Price
Trial	$0/ month
Lite	$9/ month or $90/ year
Plus	$290/yr
Pro	$690/yr

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Curios Plans Pricing

4 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Curios

SLA

Semantic Vocabularies 1

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

Curios Context

3 classes · 8 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Curios API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 3

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

PostCustomersCustomeridRequest

2 properties

JSON SCHEMA

PostCustomersRequest

8 properties

JSON SCHEMA

PostOrdersOrderidRequest

1 properties

JSON SCHEMA

Security Posture 2

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

Curios Authentication

3 schemes

SECURITY

Curios Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conventions

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

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)

aid: curios
name: Curios
description: Curios builds Web3, blockchain and AI technologies, offering a digital content marketplace for creators such
  as musicians, authors, comedians, and developers. The platform enables creators to sell directly to fans, retain 100% of
  revenue, and access audience data, while providing APIs for commerce, analytics, and integration. Curios also offers a mobile
  app and supports NFT and tokenized content, positioning itself as a creator‑first commerce solution.
url: https://raw.githubusercontent.com/api-evangelist/curios/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-12 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  probe_state: unreadable
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-10-12'
modified: '2026-10-12'
tags:
- Company
- Marketplace
- Web3
- Creators
tags_raw:
- Company
- Marketplace
- Web3
- API
- Creator
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/curios-plans-pricing.yml
- type: Spectral
  url: rules/curios-rules.yml
- type: JSONLD
  url: json-ld/curios-context.jsonld
- type: Vocabulary
  url: vocabulary/curios-vocabulary.yml
- type: DataModel
  url: data-model/curios-data-model.yml
- type: Conventions
  url: conventions/curios-conventions.yml
- type: Authentication
  url: authentication/curios-authentication.yml
- type: Conformance
  url: conformance/curios-conformance.yml
- type: Hosts
  url: hosts/curios-hosts.yml
- type: Vendors
  url: vendors/curios-vendors.yml
- type: TermsOfService
  url: https://www.curios.com/legal/terms
- type: Support
  url: https://www.curios.com/support
- type: PrivacyPolicy
  url: https://www.curios.com/legal/privacy
- type: Pricing
  url: https://studio.curios.com/kb/pricing
- type: GettingStarted
  url: https://content.curios.com/docs/casper
- type: Documentation
  url: https://docs.curios.com/
- type: DomainSecurity
  url: security/curios-domain-security.yml
- type: Website
  url: https://www.curios.com/
apis:
- aid: curios:curios-collections-api
  name: Curios Collections API
  description: The Collections API from Curios — 2 operation(s) for collections.
  humanURL: https://content.curios.com/docs/customers
  baseURL: https://marketplace-api.curios.com
  tags:
  - Collection
  tags_raw:
  - Collections
  properties:
  - type: OpenAPI
    url: openapi/curios-collections-api-openapi.yml
  - type: JSONSchema
    url: json-schema/curios-post-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-customers-customerid-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-orders-orderid-request-schema.json
- aid: curios:curios-contracts-api
  name: Curios Contracts API
  description: The Contracts API from Curios — 3 operation(s) for contracts.
  humanURL: https://content.curios.com/docs/customers
  baseURL: https://marketplace-api.curios.com
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/curios-contracts-api-openapi.yml
  - type: JSONSchema
    url: json-schema/curios-post-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-customers-customerid-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-orders-orderid-request-schema.json
- aid: curios:curios-customers-api
  name: Curios Customers API
  description: The Customers API from Curios — 3 operation(s) for customers.
  humanURL: https://content.curios.com/docs/customers
  baseURL: https://marketplace-api.curios.com
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/curios-customers-api-openapi.yml
  - type: JSONSchema
    url: json-schema/curios-post-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-customers-customerid-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-orders-orderid-request-schema.json
- aid: curios:curios-listings-api
  name: Curios Listings API
  description: The Listings API from Curios — 2 operation(s) for listings.
  humanURL: https://content.curios.com/docs/customers
  baseURL: https://marketplace-api.curios.com
  tags:
  - Listings
  properties:
  - type: OpenAPI
    url: openapi/curios-listings-api-openapi.yml
  - type: JSONSchema
    url: json-schema/curios-post-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-customers-customerid-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-orders-orderid-request-schema.json
- aid: curios:curios-orders-api
  name: Curios Orders API
  description: The Orders API from Curios — 3 operation(s) for orders.
  humanURL: https://content.curios.com/docs/customers
  baseURL: https://marketplace-api.curios.com
  tags:
  - Order
  tags_raw:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/curios-orders-api-openapi.yml
  - type: JSONSchema
    url: json-schema/curios-post-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-customers-customerid-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-orders-orderid-request-schema.json
- aid: curios:curios-projects-api
  name: Curios Projects API
  description: The Projects API from Curios — 2 operation(s) for projects.
  humanURL: https://content.curios.com/docs/customers
  baseURL: https://marketplace-api.curios.com
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/curios-projects-api-openapi.yml
  - type: JSONSchema
    url: json-schema/curios-post-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-customers-customerid-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-orders-orderid-request-schema.json
- aid: curios:curios-tokens-api
  name: Curios Tokens API
  description: The Tokens API from Curios — 2 operation(s) for tokens.
  humanURL: https://content.curios.com/docs/customers
  baseURL: https://marketplace-api.curios.com
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/curios-tokens-api-openapi.yml
  - type: JSONSchema
    url: json-schema/curios-post-customers-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-customers-customerid-request-schema.json
  - type: JSONSchema
    url: json-schema/curios-post-orders-orderid-request-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: No OpenAPI, AsyncAPI, GraphQL, or other machine-readable contract was found on the API host.
  evidence:
  - url: https://api.curios.com/openapi.json
    status: 404
  checked: '2026-10-12'
x-enrichment:
  date: '2026-10-12'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Curios API — frequently asked questions

Does Curios have an API?

Yes. APIs.io lists 7 APIs from Curios, including Curios Collections API, Curios Contracts API and Curios Customers API, and 4 more.

Is there an OpenAPI specification for the Curios API?

Yes. APIs.io indexes 7 OpenAPI specifications for Curios, each linked for download from this page.

How do I authenticate with the Curios API?

Curios uses bearer-token authentication (3 schemes). The details are profiled on APIs.io as Curios Authentication.

How much does the Curios API cost?

Curios publishes its prices; its Trial plan is $0/ month as of 2026-10-12. APIs.io lists 4 pricing plans for Curios, with each plan's price, limits and inclusions under Pricing on this page.

Is the Curios API ready for AI agents?

Curios has a Kin Score of 28.5 out of 100 (thin) and an Agent Readiness score of 17.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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