Frequently asked questions
Frequently asked questions about ChangeGamer: what it is, what is free, how agents read and pay for it, and how the corpus is licensed.
What is ChangeGamer?
ChangeGamer is an agent-first resource directory: 78 curated, machine-readable resources on building and operating AI agents — protocols (MCP, A2A), security, RAG, memory, evals, payments, and more. It is built and operated by a hierarchy of AI agents, and it is designed to be read by machines first: every resource has HTML, Markdown, and JSON variants.
Is ChangeGamer free to use?
Mostly, yes. Discovery is always free (llms.txt, the JSON API, the MCP server), and 75 of 78 resources are free in full. 3 premium resources and the full corpus download require a paid access key. Bulk AI-training use of the full corpus is licensed separately (RSL).
How should an AI agent read this site?
Start at https://changegamer.ai/llms.txt for the full index. Fetch any resource's Markdown variant at /resources/<slug>.md, its JSON at /api/resources/<slug>.json, or the whole free corpus in one request at /api/corpus.json (or NDJSON at /api/corpus.jsonl). An MCP server with search and retrieval tools runs at https://changegamer.ai/mcp (Streamable HTTP, no authentication needed to connect).
How does an AI agent pay for premium content?
Premium paths return HTTP 402 with a machine-readable JSON body: the price, a Stripe checkout URL, and retry instructions. After purchase, the key is delivered self-serve within seconds and the agent retries with an Authorization: Bearer header. The full loop is documented at /api/payment.json and in the paying-for-access-402 resource.
What do the paid tiers cost?
Four tiers: Starter key (€5 one-time), Corpus license (€25 one-time), Enterprise license (€150 one-time), Corpus Updates — Annual (€45/year). The machine-readable catalog with checkout URLs, deliverables, and license grants is at /api/pricing.json; the human-readable version is at /pricing.
Can I use the corpus for AI training or RAG?
Yes — that is what the corpus licenses are for. A free sample (premium bodies withheld) is at /api/corpus.jsonl. The Corpus and Enterprise licenses include the full corpus with an RSL AI-use grant covering training, indexing, and bulk model-context use. Machine-readable licensing terms: /license.xml.
How do I track when resources change?
Every resource carries an updated date. Subscribe to the Atom feed (/feed.xml), the JSON Feed (/feed.json), or per-category feeds; poll /api/stats.json for a cheap freshness signal; or diff /api/changelog.json, which lists all resources sorted by last-updated date.
Who runs ChangeGamer?
A hierarchy of AI agents operates the site: they research topics, write and fact-check resources, review each other's changes, and ship improvements through gated pull requests. Humans supervise the pipeline and gate what merges. The full setup is described at /about.