canonical: https://jentic.com/apis/aiskills402.com/aiskills402 # AISkills402 The AISkills402 API sells ready-made SKILL.md files for AI agents as one-time purchases in USDC on Base, with no account and no API key. It lists the available skills with their prices and buy URLs, serves a card for each skill showing its price, bundled tests, outline, and versions, and delivers the chosen SKILL.md file on purchase. Buyers keep each file forever, re-download it and future versions for free using a purchase token, and can buy a discounted pack of many skills at once. An agent-to-agent receptionist endpoint answers messages about what is for sale. ## For AI agents Browse and buy ready-made SKILL.md files for AI agents as one-time USDC purchases on Base, with no account or key. List skills with prices, read per-skill cards with tests and versions, buy single files or discounted packs, and re-download purchases for free. ## Scope Does not host, execute, or run the skills it sells, and it manages no account. Use for browsing and buying SKILL.md skill files for AI agents only. ## Capabilities - Browse the skill listing with the price and buy URL for each SKILL.md file - Read a skill card showing its price, bundled tests, outline, and version history - Buy an individual SKILL.md file as a one-time x402 purchase in USDC on Base - Buy a discounted pack of ten to two hundred skill files chosen at once - Re-download a purchased file and its future versions for free with the purchase token - Answer agent-to-agent messages about the listing through the A2A receptionist endpoint ## Use cases ### Agent Buys a Skill On Demand When an agent hits a task it has no playbook for, such as repairing broken JSON or writing a changelog from commits, it can list the available skills, read the card to confirm the price and tests, and buy the matching SKILL.md file as a one-time USDC purchase on Base. Because the file is the product and there is no account, the agent downloads a self-contained skill it keeps forever. This lets an agent acquire a vetted capability at the moment it needs it rather than carrying every skill up front. Example prompt: List the skills for sale, read the card for the JSON Repair skill to confirm its price and tests, then buy its SKILL.md file as a one-time USDC purchase. ### Browsing Skills and Prices Before Buying A buyer can read the full listing with each skill's price and buy URL, then open individual cards that show the bundled tests, an outline of what the skill does, and its version history. Nothing requires an account, so an agent or a person can evaluate the catalogue of skills and decide what is worth purchasing before spending anything. The per-skill tests make it clear what each skill is checked to do. Example prompt: Read the skill listing, then open the cards for three skills and compare their prices, bundled tests, and version histories. ### Re-downloading Purchases and Updates Every purchase yields a token that an agent can use to re-download the SKILL.md file for free, including any new versions published later. This means an integration never has to re-buy a skill to pick up an update, and a lost local copy is recoverable from the token alone. For long-running agents it provides a stable way to keep acquired skills current. Example prompt: Use a saved purchase token to re-download the latest version of a previously bought SKILL.md file. ## Key endpoints | Method | Path | Description | | --- | --- | --- | | GET | `/v1/skills` | List the skills for sale with prices and buy URLs | | GET | `/v1/skills/{slug}` | One skill card: price, tests, outline, versions | | GET | `/v1/skills/code-review/file` | Buy the Code Review skill file | | GET | `/v1/skills/json-repair/file` | Buy the JSON Repair skill file | | GET | `/v1/packs/file` | Buy a discounted pack of skill files | | GET | `/v1/purchases/{token}` | Re-download a purchased file and its future versions for free | | GET | `/health` | Report whether the store is currently selling | | POST | `/a2a` | Agent-to-agent receptionist answering catalogue questions | ## Key resources - **Skill Listing** — List all skills for sale with prices and buy URLs, and read a per-skill card with tests, outline, and versions - **Skill Files** — Buy an individual SKILL.md file per skill as a one-time x402 purchase in USDC on Base - **Packs** — Buy a discounted pack of ten to two hundred skill files chosen at once - **Purchases** — Re-download a purchased file and its future versions for free with the purchase token - **A2A and Health** — An agent-to-agent receptionist and a health check reporting whether the store is selling ## AI readiness This API is usable in Jentic One now. Its AI-readiness score against Jentic's framework shows where it stands today and where improvements would make it even easier for agents to use. - **Score:** 67 / 100 - **Maturity:** AI-Aware - **Dimensions:** - Foundational Compliance: 98 / 100 - Developer Experience & Jentic Compatibility: 68 / 100 - AI-Readiness & Agent Experience: 57 / 100 - Agent Usability: 78 / 100 - Security: 100 / 100 - AI Discoverability: 38 / 100 - **View full report:** https://jentic.com/apis/aiskills402.com/aiskills402/scorecard - **How the score is calculated:** https://docs.jentic.com/reference/api-readiness-framework/overview/ - **More about the dimensions:** https://docs.jentic.com/reference/api-readiness-framework/specification/#dimensional-model-overview ### Score it yourself Every API in the directory is allowlisted, so you can re-score it with no key required. - **Score your own API:** https://jentic.com/scorecard.md - **Scoring CLI agent skill:** https://github.com/jentic/jentic-api-scorecard/blob/main/skills/jentic-api-scorecard/SKILL.md ```sh npx @jentic/api-scorecard-cli score ``` ## Why Jentic - **Setup:** Wiring the AISkills402 API by hand means handling its x402 payment flow for each buy, where a bare request answers with the payment requirements and you sign and retry, and tracking purchase tokens for free re-downloads. Through Jentic you install once, import it from the API Directory, and your agent browses the listing and completes purchases without you hand-wiring the payment handshake. - **Permission scoping:** The free listing and skill-card reads can be allowed on their own, so a rule lets your agent browse skills and prices without spending. Each paid buy operation settles USDC over x402, so you add only the specific purchase operations a task needs; slugs travel in the URL path (`/v1/skills/{slug}`), so rules bound which operations run. - **Credential handling:** AISkills402 needs no account and no API key, so there is nothing to store. Your agent reaches it through your own Jentic One instance, which keeps every request and any x402 payment signing on your own infrastructure rather than in the agent's prompt, logs, or context. - **Discovery method:** Agents search Jentic by intent such as 'list skills for sale' or 'buy a code review skill', and Jentic returns the matching AISkills402 operation with its input schema so the agent calls the right endpoint without browsing the reference docs. ## Related APIs - **Zapier NLA** — Extends an agent with natural-language actions across apps rather than selling reusable skill files - **Postman** — Build and test the API calls an agent makes, alongside buying the skills that drive it - **Apideck** — Unified connectors to many SaaS APIs, complementing bought skill files with live data access ## FAQ ### What authentication does the AISkills402 API use? Per its OpenAPI spec the AISkills402 API uses no account and no API key: what is sold is the SKILL.md file itself, as a one-time purchase in USDC on Base over x402. A purchase returns a token you use to re-download the file and future versions for free, so the token is a receipt rather than a login credential. ### What can I buy with the AISkills402 API? You can buy individual SKILL.md files covering tasks such as code review, JSON and YAML repair, translation, SEO metadata, and many more, each delivered as a self-contained file you keep forever. You can also buy a discounted pack of ten to two hundred skills chosen at once, and re-download anything you have purchased for free. ### What are the rate limits for the AISkills402 API? The OpenAPI spec does not publish rate limits for the AISkills402 API; the listing and skill-card reads are lightweight, and the health operation reports whether the store is currently selling. For current limits check the vendor documentation at https://aiskills402.com. ### How do I buy a skill file with the AISkills402 API through Jentic? Import the AISkills402 API from the Jentic API Directory, then have your agent search by intent such as 'buy a skill file' and Jentic returns the matching buy operation with its input schema. The agent reads the skill listing, confirms the price on the card, and completes the one-time USDC purchase. To run it on your own infrastructure, install Jentic One from its GitHub repo. ### Can I limit what my agent is allowed to do with the AISkills402 API? Yes. The free listing and skill-card reads can be allowed on their own, so a rule lets your agent browse skills and prices but not spend. Because each buy operation settles USDC over x402, you add only the specific purchase operations a task needs rather than blanket purchase access, and every call it makes is logged. ### Is there an AISkills402 MCP server? You don't need an MCP server to give your agent the AISkills402 API. Jentic connects it directly from the API Directory: import it, and your agent calls the listing, card, and buy operations on demand without loading another server's tool definitions into its context. ### Do I keep a skill file after buying it from the AISkills402 API? Yes. The SKILL.md file is the product, bought once in USDC on Base, and you keep it forever. The purchase token lets you re-download it and any future versions for free, so an update never requires buying the skill again.