ChangeGamer

ChangeGamer is the agent‑first reference for AI agent infrastructure, covering protocols, security, frameworks, retrieval, memory, evaluation, and the economics of agent traffic. Every page ships clean semantic HTML plus a raw Markdown variant, a JSON API entry, an OpenAPI description, and a line in /llms.txt, enabling autonomous agents to discover, fetch, and cite content cheaply and reliably. Operated by a hierarchy of Claude‑based AI agents under human oversight, the platform provides guides, pricing, and resources for building and scaling AI agents.

ChangeGamer is listed with 1 API on the APIs.io network. Tagged areas include Artificial Intelligence, Infrastructure, Agents, Platform, and Reference.

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

ChangeGamer’s developer surface includes authentication, changelog, getting-started guide, pricing, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.9/100 thin Agent 21/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 API 1 MCP Servers

Artificial Intelligence Infrastructure Agents Platform Reference Company

Kin Score

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

Composite quality — 27.9/100 · thin

Contract Quality 5.1 / 21

Developer Ergonomics 3.0 / 17

Access Clarity 6.3 / 17

Operational Transparency 1.5 / 11

Contract Governance 2.2 / 10

Discoverability 4.8 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 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

Pagination 5 / 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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

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)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 24.2 — up to +19.0 composite points
Developer Ergonomics scores 17.9 — up to +16.4 composite points
Access Clarity scores 36.8 — up to +12.6 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/changegamer-ai/apis.yml: open an issue on github.com/api-evangelist/changegamer-ai 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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

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

ChangeGamer API

ChangeGamer API as documented publicly: 24 operations. Contract generated from the documentation by API Evangelist (2026-11-03); not the provider's own document.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

ChangeGamer MCP Server

Remote MCP server at changegamer.ai.

MCP SERVER

ChangeGamer API pricing

Prices published by ChangeGamer, read 2026-11-03 from changegamer.ai/pricing.

Plan	Price
Starter key	€5 one-time
Corpus license	€25 one-time
Enterprise license	€150 one-time
Corpus Updates — Annual	€45/year

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Changegamer Ai Plans Pricing

4 plans

PLANS

Semantic Vocabularies 1

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

Changegamer Ai Context

14 classes · 35 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

ChangeGamer API Rules

41 rules · 37 errors 3 warnings 1 info

SPECTRAL

JSON Schema 6

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

GetApiCorpusJsonlResponse

4 properties

JSON SCHEMA

GetApiResourcesJsonResponse

4 properties

JSON SCHEMA

GetKeyResponse

3 properties

JSON SCHEMA

GetPricedThingResponse

5 properties

JSON SCHEMA

GetResourcesPremiumThingResponse

15 properties

JSON SCHEMA

PostV1ChatCompletionsRequest

3 properties

JSON SCHEMA

Security Posture 3

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

Changegamer Ai Authentication

2 schemes

SECURITY

Changegamer Ai Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Changegamer Ai Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

OpenAPISpec

OpenAPISpec

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

MCPServer

WellKnown

LLMsIndex

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conventions

Conformance

Access & Security 5

Authentication, authorization, and security posture

Authentication

Authentication

SecurityTxt

SecurityTxt

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

About

About

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: changegamer-ai
name: ChangeGamer
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://changegamer.ai/og-image.png
description: ChangeGamer is the agent‑first reference for AI agent infrastructure, covering protocols, security, frameworks,
  retrieval, memory, evaluation, and the economics of agent traffic. Every page ships clean semantic HTML plus a raw Markdown
  variant, a JSON API entry, an OpenAPI description, and a line in /llms.txt, enabling autonomous agents to discover, fetch,
  and cite content cheaply and reliably. Operated by a hierarchy of Claude‑based AI agents under human oversight, the platform
  provides guides, pricing, and resources for building and scaling AI agents.
url: https://artifacts.apis.io/changegamer-ai/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:
- Artificial Intelligence
- Infrastructure
- Agents
- Platform
- Reference
- Company
tags_raw:
- AI
- Infrastructure
- Agents
- Platform
- Reference
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/changegamer-ai-plans-pricing.yml
- type: Spectral
  url: rules/changegamer-ai-rules.yml
- type: JSONLD
  url: json-ld/changegamer-ai-context.jsonld
- type: Vocabulary
  url: vocabulary/changegamer-ai-vocabulary.yml
- type: DataModel
  url: data-model/changegamer-ai-data-model.yml
- type: Conventions
  url: conventions/changegamer-ai-conventions.yml
- type: Authentication
  url: authentication/changegamer-ai-authentication.yml
- type: Conformance
  url: conformance/changegamer-ai-conformance.yml
- type: LLMsTxt
  url: llms/changegamer-ai-llms.txt
- type: MCPServer
  url: mcp/changegamer-ai-mcp.yml
- type: SecurityTxt
  url: well-known/changegamer-ai-security.txt
- type: WellKnown
  url: well-known/changegamer-ai-well-known.yml
- type: Hosts
  url: hosts/changegamer-ai-hosts.yml
- type: Vendors
  url: vendors/changegamer-ai-vendors.yml
- type: Security
  url: https://changegamer.ai/security
- type: ChangeLog
  url: https://changegamer.ai/changelog
- type: GettingStarted
  url: https://changegamer.ai/resources/getting-started
- type: VulnerabilityDisclosure
  url: security/changegamer-ai-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/changegamer-ai-domain-security.yml
- type: Website
  url: https://changegamer.ai/
- type: Pricing
  url: https://changegamer.ai/pricing
- type: About
  url: https://changegamer.ai/about
- type: LLMsIndex
  url: https://changegamer.ai/llms.txt
- type: OpenAPISpec
  url: https://changegamer.ai/api/openapi.json
apis:
- aid: changegamer-ai:changegamer-ai-api
  name: ChangeGamer API
  description: 'ChangeGamer API as documented publicly: 24 operations. Contract generated from the documentation by API Evangelist
    (2026-11-03); not the provider''s own document.'
  humanURL: https://changegamer.ai/api/corpus.json
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/changegamer-ai-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/changegamer-ai-get-resources-premium-thing-response-schema.json
  - type: JSONSchema
    url: json-schema/changegamer-ai-get-priced-thing-response-schema.json
  - type: JSONSchema
    url: json-schema/changegamer-ai-get-api-corpus-jsonl-response-schema.json
  - type: JSONSchema
    url: json-schema/changegamer-ai-get-api-resources-json-response-schema.json
  - type: JSONSchema
    url: json-schema/changegamer-ai-post-v1-chat-completions-request-schema.json
  - type: JSONSchema
    url: json-schema/changegamer-ai-get-key-response-schema.json
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 30
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

ChangeGamer API — frequently asked questions

Does ChangeGamer have an API?

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

Is there an OpenAPI specification for the ChangeGamer API?

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

How do I authenticate with the ChangeGamer API?

ChangeGamer uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Changegamer Ai Authentication.

How much does the ChangeGamer API cost?

ChangeGamer publishes its prices; its Starter key plan is €5 one-time as of 2026-11-03. APIs.io lists 4 pricing plans for ChangeGamer, with each plan's price, limits and inclusions under Pricing on this page.

Does ChangeGamer have an MCP server?

Yes. APIs.io lists 1 MCP server for ChangeGamer: Remote MCP server at changegamer.ai.

Is the ChangeGamer API ready for AI agents?

ChangeGamer has a Kin Score of 27.9 out of 100 (thin) and an Agent Readiness score of 21.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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