x402base-sepoliaquality 0.25

Pay-per-access IPFS content retrieval via x402 on Base Sepolia (0.1 USDC per request)

Price
0.1 USDC / call
Protocol
x402
Verified
no
Endpoint
https://gateway.grapevine.fyi/x402/cid/bafkreie4ypoedvoijd4tvwbu6q22noku7stboykhkx5uwl742y36yjcg24

What it does

This endpoint serves content stored on IPFS, gated behind an x402 micropayment. The specific resource is identified by a CID (Content Identifier): bafkreie4ypoedvoijd4tvwbu6q22noku7stboykhkx5uwl742y36yjcg24. To access the content, a client must submit a valid x-payment header containing a payment proof for 0.1 USDC on the Base Sepolia testnet. The payment is made to address 0x9F137a6134B62437813E4eF88bac89f6Cb408511 using the USDC token contract at 0x036CbD53842c5426634e7929541eC2318f3dCF7e.

The gateway is operated by Grapevine (gateway.grapevine.fyi) and uses the x402 protocol version 1 with the "exact" payment scheme. The content is returned as application/octet-stream. The payment timeout is 60 seconds. No OpenAPI documentation, agents.txt, or additional docs were found on the gateway — all crawled paths returned error messages indicating invalid or missing CID parameters.

Because this runs on Base Sepolia (a testnet), the USDC involved is testnet USDC with no real monetary value. This makes the endpoint suitable for experimentation and development of x402-based payment flows rather than production content delivery.

Capabilities

x402-paymentipfs-content-retrievalbase-sepolia-testnetusdc-micropaymentcontent-gatingoctet-stream-delivery

Use cases

  • —Testing x402 payment flows against a live testnet endpoint
  • —Retrieving IPFS-hosted content behind a micropayment gate
  • —Prototyping agent-to-service payment integrations on Base Sepolia
  • —Demonstrating pay-per-access content delivery patterns

Fit

Best for

  • —Developers experimenting with x402 protocol integrations
  • —Testing micropayment-gated content retrieval on a testnet
  • —Building agents that autonomously purchase digital content

Not for

  • —Production content delivery (this is on a testnet)
  • —Accessing content without cryptocurrency payment capability
  • —Bulk or high-throughput file downloads

Quick start

curl -X GET \
  https://gateway.grapevine.fyi/x402/cid/bafkreie4ypoedvoijd4tvwbu6q22noku7stboykhkx5uwl742y36yjcg24 \
  -H "x-payment: <valid-x402-payment-proof>"

Endpoint

URLhttps://gateway.grapevine.fyi/x402/cid/bafkreie4ypoedvoijd4tvwbu6q22noku7stboykhkx5uwl742y36yjcg24
Transporthttp
Protocolx402
Pay to0x9F137a6134B62437813E4eF88bac89f6Cb408511
CurrencyUSDC

Quality

0.25/ 1.00

Very sparse information available. No documentation, no OpenAPI spec, no examples of successful responses. The only concrete data comes from the x402 challenge object. The content behind the CID is unknown (opaque octet-stream). Testnet-only further limits practical utility.

Warnings

  • —No documentation found at any crawled path — all return error messages
  • —Content type is application/octet-stream with no description of what the content actually is
  • —Runs on Base Sepolia testnet — USDC has no real value
  • —No OpenAPI schema or response examples available
  • —The specific CID content is unknown; cannot verify the endpoint delivers useful data

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 18:49:07Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Tptucz