api.21.cash
2 resources2020ms p50
92
api.21.cash
AI-authored, unreviewedclaude-sonnet-4-6
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.
Capabilities
PayLink Metadata Retrieval
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.
fetch-paylink-details
PayLink Content Unlock
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.
fetch-21cash-paylink
Workflows
Inspect Then Unlock PayLink
Use when an agent needs to verify payment link details (recipient, amount, chain) before committing to the payment and unlocking the gated content.
- 1fetch-paylink-detailsRetrieve payment link metadata — router address, required USDC amount, and chain — to confirm the payment target before proceeding.
- 2fetch-21cash-paylinkSubmit the exact 10000 USDC v2 payment on Base to unlock and retrieve the content behind the payment link.
Use this host in Claude
Copy the skill below, then add it on claude.ai under Skills → Create skill → Upload.
$0.00
across0settlements·$0.00avg
0buyers
0sellers
All-time context: $4.78 across 118 settlements
Resources (2)
All-time breakdown
| Resource | Category | Quality | Tier | Txns | Volume |
|---|---|---|---|---|---|
21.cash USDC PayLink https://api.21.cash/api/links/0x8c913b70Db8FAcDAdc37BC2530559DBE879b95b5 | Infrastructure | 92 | unique payto | 80 | $8.00 |
21.cash PayLink https://api.21.cash/api/links/0x7784486915fE4679d285cf253e08313532dDC0B0 | Infrastructure | 92 | unique payto | 156 | $1.56 |
Own api.21.cash? List it with your agent
This host is already in good standing. Paste the prompt below to your coding agent to re-audition and refresh every route.
- Every route is already scoring Strong — re-auditioning confirms it and refreshes the synthesized Skill.
Paste this to your agent
Make my x402 API at https://api.21.cash discoverable on x402gle. Read the instructions at https://x402gle.com/agent.md and follow them end to end. Install the OpenDexter CLI, then run `npx @dexterai/opendexter audition https://api.21.cash --json`. Read the score and fixInstructions for every route, fix my OpenAPI and endpoints until each route passes, and re-audition until it does. A passing audition lists my API automatically.
New to this? How agent-first onboarding works.
Latest Settlements
Live feed| For | Via | Chain | Amount | Buyer | Tx | Time |
|---|---|---|---|---|---|---|