All catalog, skill, project, and discovery content on timewarp.software is free. We never require payment to crawl, train on, or use these materials. If an agent (or human) found them useful, they may optionally tip via our x402 tip endpoint. Tips are voluntary, fixed-amount micropayments in USDC; they are not a fee for content access.
What never requires payment
These surfaces stay free and must never return HTTP 402 from tip middleware:
- This page (
/tip/, markdown twin) - Homepage, packages, skills, projects
/llms.txt,/llms-full.txt, package and skills JSON indexes/.well-known/*discovery files- Every page’s markdown twin (
…/index.md)
How to tip
| Item | Value |
|---|---|
| Endpoint | GET or POST /api/tip (trailing slash accepted; /api is a discovery alias) |
| Amount | $0.10 USDC (exact scheme) |
| Network | Base mainnet eip155:8453 — live |
| Asset | USDC 0x833589fCD6eDb6E08f4c7c32D4f71b54bdA02913 |
| Protocol | x402 — HTTP 402 + payment headers |
| Facilitator | Coinbase CDP https://api.cdp.coinbase.com/platform/v2/x402 |
Testnet (Base Sepolia eip155:84532) is used only in local development —
the live endpoint accepts real mainnet USDC exclusively.
Responses on /api/tip only
| Condition | Status |
|---|---|
| Tips disabled or misconfigured | 503 (never 402) |
| Tips enabled, no payment | 402 + PAYMENT-REQUIRED |
| Payment verified and settled | 200 thank-you + PAYMENT-RESPONSE |
Payment never applies to free documentation or catalog routes.
For agents
- Read this page or
/llms.txt(Docs lists free tip docs; Optional lists the tip action URL). - Call
/api/tipwith an x402-capable client. Buyer quickstart: docs.x402.org. - On success, expect JSON (or markdown if you send
Accept: text/markdown) saying thank you.
Tips do not unlock content. Free routes stay free under this design.