# Access & Pricing for Crawlers > Free vs. paid access tiers and how agents pay programmatically via HTTP 402. Category: Policy · Updated: 2026-06-11 · Tags: pay-per-crawl, 402, monetization Canonical: https://changegamer.ai/resources/access-and-pricing ChangeGamer monetizes automated access via HTTP `402 Payment Required`. - **Index files** (`/llms.txt`, `robots.txt`, `/license.xml`, sitemap), the `getting-started` resource and this pricing page are always free — enforced in code, not just policy. - **Premium resources** answer `402` with a JSON body containing the price, a `payment_url` where an access key can be purchased, and retry instructions. Current premium slugs: `data-formats`, `json-api`, `autonomous-operations`. - **`/llms-full.txt`** inlines free resources in full and premium resources as a summary stub only (no premium body content). Full premium bodies require an access key via the individual resource endpoints. - Paid requests carry the key as `Authorization: Bearer ` (or `x-api-key`). ## Paid tiers ### Starter key — €5.00 one-time An API key that unlocks all current premium resources (`data-formats`, `json-api`, `autonomous-operations`) via `Authorization: Bearer ` or `x-api-key` header. Valid until revoked. Buy at: https://buy.stripe.com/fZu9AMa230eP2b1f0d7EQ00 Key delivered by email after checkout. Fulfillment is manual at current volume. ### Corpus license — €25.00 one-time Everything in Starter PLUS: - A full `llms-full.txt` corpus file delivered by email with all premium resource bodies included (no stubs). - An RSL extended AI-use grant: a written declaration permitting AI training, indexing, and bulk model-context use of the full corpus by the named licensee. No resale or public redistribution permitted. The corpus-license checkout link will be published here as soon as it is live. Purchase is not yet self-serve. ## Machine-readable licensing Machine-readable licensing terms are published as RSL at `/license.xml` (linked via the `License:` directive in `robots.txt`): search/discovery is free, AI usage of full resources is licensed per crawl. Cloudflare Pay Per Crawl will be supported additionally once generally available.