CardMind

CardMind provides market intelligence for Magic: The Gathering (MTG) cards, offering real‑time price data, signals, and analytics for collectors and traders. Built by a longtime collector and engineer, the platform tracks over 113,000 cards, monitors daily signals, and delivers tools such as price calculators, market movers, and ban‑watch lists. The service emphasizes transparency, data‑driven insights, and open methodology, aiming to help users understand card values without financial advice.

CardMind is listed with 1 API on the APIs.io network. Tagged areas include Market Intelligence, Price Data, Signals, Ban Watch, and Deck Intelligence.

The CardMind catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

CardMind’s developer surface includes authentication, API reference, getting-started guide, engineering blog, pricing, support, signup flow, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.5/100 thin Agent 39/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 API

Market Intelligence Price Data SignalsBan WatchDeck Intelligence

Kin Score

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

Composite quality — 36.5/100 · thin

Contract Quality 6.9 / 21

Developer Ergonomics 4.3 / 17

Access Clarity 9.2 / 17

Operational Transparency 3.2 / 11

Contract Governance 2.2 / 10

Discoverability 4.6 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 39/100 · agent ready

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 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 0 / 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 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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/cardmind-app/"><img src="https://apis.io/badge/cardmind-app/card.svg" alt="CardMind on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 32.5 — up to +16.9 composite points
Developer Ergonomics scores 25.0 — up to +15.0 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/cardmind-app/apis.yml: open an issue on github.com/api-evangelist/cardmind-app 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 2

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.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 1

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

CardMind API

CardMind API as documented publicly: 12 operations. Contract generated from the documentation by API Evangelist (2026-11-03); not the provider's own document.

CardMind API pricing

Prices published by CardMind, read 2026-11-03 from www.cardmind.app/pricing.

Plan	Price
Track	$0/mo
Player	$9.99/mo
Investor	$24.99/mo
MCP Premium	$29/mo

Plan details, limits and sources →

Rate limits

Free tier per-minute: 10 / min
Free tier per-month: 1,000 / mo

Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Cardmind App Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cardmind App Rate Limits

2 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Cardmind App Webhooks

ASYNCAPI

Semantic Vocabularies 1

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

Cardmind App Context

16 classes · 21 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

CardMind API Rules

45 rules · 42 errors 2 warnings 1 info

SPECTRAL

JSON Schema 6

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

DeleteApiWebhooksResponse

3 properties

JSON SCHEMA

GetApiCardsCardidResponse

3 properties

JSON SCHEMA

GetApiPricesMoversResponse

2 properties

JSON SCHEMA

PostApiCardsSearchResponse

9 properties

JSON SCHEMA

PostApiInternalFleetHeartbeatRequest

4 properties

JSON SCHEMA

PostApiWebhooksResponse

2 properties

JSON SCHEMA

Security Posture 2

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

Cardmind App Authentication

2 schemes

SECURITY

Cardmind App Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

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 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: cardmind-app
name: CardMind
description: 'CardMind provides market intelligence for Magic: The Gathering (MTG) cards, offering real‑time price data, signals,
  and analytics for collectors and traders. Built by a longtime collector and engineer, the platform tracks over 113,000 cards,
  monitors daily signals, and delivers tools such as price calculators, market movers, and ban‑watch lists. The service emphasizes
  transparency, data‑driven insights, and open methodology, aiming to help users understand card values without financial
  advice.'
url: https://artifacts.apis.io/cardmind-app/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-03 (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: high
  probe_state: unreadable
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Provider documentation is publicly accessible but no OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL contract could be
    found.
  evidence:
  - url: https://api.cardmind.app/docs
    status: 200
  checked: '2026-11-03'
tags:
- Market Intelligence
- Price Data
- Signals
- Ban Watch
- Deck Intelligence
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/cardmind-app-rate-limits.yml
- type: Plans
  url: plans/cardmind-app-plans-pricing.yml
- type: Spectral
  url: rules/cardmind-app-rules.yml
- type: JSONLD
  url: json-ld/cardmind-app-context.jsonld
- type: Vocabulary
  url: vocabulary/cardmind-app-vocabulary.yml
- type: Webhooks
  url: asyncapi/cardmind-app-webhooks.yml
- type: DataModel
  url: data-model/cardmind-app-data-model.yml
- type: Authentication
  url: authentication/cardmind-app-authentication.yml
- type: Conformance
  url: conformance/cardmind-app-conformance.yml
- type: WellKnown
  url: well-known/cardmind-app-well-known.yml
- type: Hosts
  url: hosts/cardmind-app-hosts.yml
- type: Vendors
  url: vendors/cardmind-app-vendors.yml
- type: DomainSecurity
  url: security/cardmind-app-domain-security.yml
- type: Website
  url: https://www.cardmind.app/
- type: APIReference
  url: https://api.cardmind.app/docs
- type: GettingStarted
  url: https://www.cardmind.app/pricing
- type: Blog
  url: https://www.cardmind.app/blog
- type: Pricing
  url: https://www.cardmind.app/pricing
- type: TermsOfService
  url: https://www.cardmind.app/terms
- type: PrivacyPolicy
  url: https://www.cardmind.app/privacy
- type: Support
  url: https://discord.gg/cardmind
- type: SignUp
  url: https://www.cardmind.app/auth/signup
- type: Login
  url: https://www.cardmind.app/auth/signin
apis:
- aid: cardmind-app:cardmind-app-api
  name: CardMind API
  description: 'CardMind API as documented publicly: 12 operations. Contract generated from the documentation by API Evangelist
    (2026-11-03); not the provider''s own document.'
  humanURL: https://api.cardmind.app/docs/endpoints
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/cardmind-app-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/cardmind-app-post-api-cards-search-response-schema.json
  - type: JSONSchema
    url: json-schema/cardmind-app-post-api-internal-fleet-heartbeat-request-schema.json
  - type: JSONSchema
    url: json-schema/cardmind-app-post-api-webhooks-response-schema.json
  - type: JSONSchema
    url: json-schema/cardmind-app-delete-api-webhooks-response-schema.json
  - type: JSONSchema
    url: json-schema/cardmind-app-get-api-cards-cardid-response-schema.json
  - type: JSONSchema
    url: json-schema/cardmind-app-get-api-prices-movers-response-schema.json
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

CardMind API — frequently asked questions

Does CardMind have an API?

Yes. APIs.io lists 1 API from CardMind, including CardMind API.

Is there an OpenAPI specification for the CardMind API?

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

How do I authenticate with the CardMind API?

CardMind documents its authentication (2 schemes). The details are profiled on APIs.io as Cardmind App Authentication.

How much does the CardMind API cost?

CardMind publishes its prices; its Track plan is $0/mo as of 2026-11-03. APIs.io lists 4 pricing plans for CardMind, with each plan's price, limits and inclusions under Pricing on this page.

Is the CardMind API ready for AI agents?

CardMind has a Kin Score of 36.5 out of 100 (thin) and an Agent Readiness score of 38.8 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

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.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/cardmind-app"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/cardmind-app/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/cardmind-app/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.