CardDeals

CardDeals is a gift‑card comparison platform that aggregates discounted gift‑card offers from verified resale providers. It helps shoppers save up to 25 % on purchases across categories such as groceries, electronics, travel, and more. By presenting real‑time price data and deals from over 700 top brands, CardDeals enables users to find the best value and purchase gift cards instantly.

CardDeals publishes 1 API contract indexed on the APIs.io network: Gift-card deals API. Tagged areas include Company, Gift Cards, Comparison, Discounts, and E-Commerce.

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

CardDeals’ developer surface includes documentation, API reference, engineering blog, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.1/100 thin Agent 22/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract

Company Gift Cards Comparison Discounts E-Commerce Real-Time

Kin Score

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

Composite quality — 29.1/100 · thin

Contract Quality 11.2 / 21

Developer Ergonomics 2.4 / 17

Access Clarity 2.9 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 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 Payments 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
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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 14.3 — up to +17.1 composite points
Access Clarity scores 17.1 — up to +16.6 composite points
Contract Quality scores 52.8 — up to +11.8 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/carddeals-co/apis.yml: open an issue on github.com/api-evangelist/carddeals-co 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 1

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

CardDeals Gift-card deals API

The Gift-card deals API from CardDeals — 3 operation(s) for gift-card deals.

Semantic Vocabularies 1

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

Carddeals Co Context

6 classes · 37 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

CardDeals API Rules

48 rules · 46 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Carddeals Co Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Carddeals Co Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Carddeals Co Agentic Access

3 operations

3 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 4

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

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: carddeals-co
name: CardDeals
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://carddeals.co/og.png
description: CardDeals is a gift‑card comparison platform that aggregates discounted gift‑card offers from verified resale
  providers. It helps shoppers save up to 25 % on purchases across categories such as groceries, electronics, travel, and
  more. By presenting real‑time price data and deals from over 700 top brands, CardDeals enables users to find the best value
  and purchase gift cards instantly.
url: https://artifacts.apis.io/carddeals-co/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)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- Company
- Gift Cards
- Comparison
- Discounts
- E-Commerce
- Real-Time
tags_raw:
- Company
- GiftCards
- Comparison
- Discounts
- ECommerce
- RealTime
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/carddeals-co-agentic-access.yml
- type: Spectral
  url: rules/carddeals-co-rules.yml
- type: JSONLD
  url: json-ld/carddeals-co-context.jsonld
- type: Vocabulary
  url: vocabulary/carddeals-co-vocabulary.yml
- type: DataModel
  url: data-model/carddeals-co-data-model.yml
- type: Security
  url: security/carddeals-co-vulnerability-disclosure.yml
- type: ErrorCatalog
  url: errors/carddeals-co-problem-types.yml
- type: Conformance
  url: conformance/carddeals-co-conformance.yml
- type: LLMsTxt
  url: llms/carddeals-co-llms.txt
- type: SecurityTxt
  url: well-known/carddeals-co-security.txt
- type: WellKnown
  url: well-known/carddeals-co-well-known.yml
- type: Hosts
  url: hosts/carddeals-co-hosts.yml
- type: Vendors
  url: vendors/carddeals-co-vendors.yml
- type: Login
  url: https://carddeals.co/login
- type: VulnerabilityDisclosure
  url: security/carddeals-co-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/carddeals-co-domain-security.yml
- type: Website
  url: https://carddeals.co/
- type: DeveloperPortal
  url: https://carddeals.co/mcp
- type: Documentation
  url: https://carddeals.co/mcp
- type: APIReference
  url: https://catalog.carddeals.co/openapi.json
- type: Blog
  url: https://carddeals.co/blog
- type: TermsOfService
  url: https://carddeals.co/terms
- type: PrivacyPolicy
  url: https://carddeals.co/privacy
apis:
- aid: carddeals-co:carddeals-co-gift-card-deals-api
  name: CardDeals Gift-card deals API
  description: The Gift-card deals API from CardDeals — 3 operation(s) for gift-card deals.
  baseURL: https://catalog.carddeals.co
  tags:
  - Gift-card deals
  properties:
  - type: OpenAPI
    url: openapi/carddeals-co-gift-card-deals-api-openapi.yml
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 21
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

CardDeals API — frequently asked questions

Does CardDeals have an API?

Yes. APIs.io lists 1 API from CardDeals, including CardDeals Gift-card deals API.

Is there an OpenAPI specification for the CardDeals API?

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

Is the CardDeals API ready for AI agents?

CardDeals has a Kin Score of 29.1 out of 100 (thin) and an Agent Readiness score of 22.2 (agent-aware), scored by API Evangelist on 2026-11-06.

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