{"ok":true,"host":"api.21.cash","status":"ready","manifest":{"positioning":"api.21.cash is a payment-link resolution service built on the x402 paywall protocol, operating exclusively on Base with USDC v2. It serves agents that need to inspect or unlock 21.cash payment links — either by reading link metadata before committing funds, or by submitting the required fixed payment to retrieve gated content. It does not support variable amounts, other tokens, or other chains.","host_overview":"api.21.cash provides two endpoints for interacting with 21.cash payment links on the Base network (eip155:8453), both requiring USDC v2 payments. One endpoint fetches the content behind a paylink after submitting an exact 10000 USDC atomic unit payment, while the other returns payment link metadata (recipient address, amount, chain) before or after payment.","routing_guidance":"Use api.21.cash when an agent needs to inspect or unlock a 21.cash payment link on Base using USDC v2. Use fetch-paylink-details first if the agent needs to confirm destination and amount before paying. Use fetch-21cash-paylink when the agent is ready to submit the fixed 10000 USDC atomic unit payment and retrieve gated content. Do not use this host for variable-amount payments, non-USDC tokens, or chains other than Base — those scenarios are not supported. This host is also not suitable for broadcasting arbitrary on-chain transactions; it only handles the specific x402 paywall flow for 21.cash links.","capability_clusters":[{"skill_names":["fetch-paylink-details"],"cluster_name":"PayLink Metadata Retrieval","cluster_summary":"Returns the details of a 21.cash payment link — including router address, required USDC amount, and chain — without executing an on-chain transaction beyond the x402 payment gate."},{"skill_names":["fetch-21cash-paylink"],"cluster_name":"PayLink Content Unlock","cluster_summary":"Submits an exact 10000 USDC v2 payment on Base to satisfy the x402 paywall and retrieves the content or resource behind a 21.cash payment link."}],"cross_skill_workflows":[{"steps":[{"skill_name":"fetch-paylink-details","description":"Retrieve payment link metadata — router address, required USDC amount, and chain — to confirm the payment target before proceeding."},{"skill_name":"fetch-21cash-paylink","description":"Submit the exact 10000 USDC v2 payment on Base to unlock and retrieve the content behind the payment link."}],"when_to_use":"Use when an agent needs to verify payment link details (recipient, amount, chain) before committing to the payment and unlocking the gated content.","workflow_name":"Inspect Then Unlock PayLink"}]},"model":"claude-sonnet-4-6","version_no":1,"generated_at":"2026-05-06T19:06:59.873Z","provenance":"ai_authored_unreviewed","ai_authored":true,"merchant_reviewed":false,"merchant_edited":false,"merchant_reviewed_at":null,"merchant_edited_at":null,"skill_md_url":"https://x402gle.com/servers/api.21.cash/SKILL.md","skills_url":"https://x402gle.com/servers/api.21.cash/skills.json"}