x402basequality 0.35

Pay 1 USDC via x402 to swap for CATC (CatChad) tokens on Base network.

Price
1.00 USDC / call
Protocol
x402
Verified
no
Endpoint
https://catc.x420.dev/api/puff

What it does

This x402-enabled endpoint allows agents and users to purchase CATC (CatChad) tokens by paying 1 USDC on the Base network. The endpoint uses the x402 payment protocol (version 1) with an "exact" payment scheme: the caller includes an X-PAYMENT header with a 1 USDC payment (maxAmountRequired: 1,000,000 units, i.e. 1 USDC at 6 decimals), and the service executes a token swap, returning the CATC tokens to the caller.

The CATC token contract is 0x8efE37734db03e316531532E39D7EDe5AF731b07 on Base, and was created via Clanker. The payment is sent to address 0x93109d14F6665a9c9675290D3cD5A6c07bBAfdbd using USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The response includes a swap transaction hash, a send transaction hash, the number of tokens received, and the USDC amount paid. According to the landing page, the service has processed a small number of transactions (4 total at time of crawl) with a 100% success rate and average latency of ~2.81 seconds.

No formal API documentation, OpenAPI spec, or pricing page exists beyond the x402 challenge metadata and the landing page. The endpoint is a simple GET request gated by x402 payment. The trust score reported on the landing page is 81%.

Capabilities

x402-paymenttoken-swapbase-networkusdc-paymenterc20-purchasecrypto-swap

Use cases

  • —Programmatically purchasing CATC meme tokens with USDC via an AI agent
  • —Demonstrating x402 payment protocol integration for on-chain token swaps
  • —Automating small token purchases on Base network without manual wallet interaction

Fit

Best for

  • —Agents or bots that need to acquire CATC tokens programmatically
  • —Developers experimenting with the x402 payment protocol on Base
  • —Users wanting a simple one-step USDC-to-CATC swap

Not for

  • —Large-volume or variable-amount token trading (fixed 1 USDC amount)
  • —Users seeking tokens on networks other than Base
  • —Anyone needing detailed API documentation or SLA guarantees

Quick start

# x402 payment required — send a GET with X-PAYMENT header containing 1 USDC payment
curl -X GET https://catc.x420.dev/api/puff \
  -H "X-PAYMENT: <x402-payment-token>"

Example

Response

{
  "message": "Successfully swapped USDC for CATC tokens",
  "tokensReceived": "1000000000000000000",
  "usdcAmountPaid": "1000000",
  "sendTransactionHash": "0x789abc...012def",
  "swapTransactionHash": "0xabc123...def456"
}

Endpoint

URLhttps://catc.x420.dev/api/puff
Transporthttp
Protocolx402
Pay to0x93109d14F6665a9c9675290D3cD5A6c07bBAfdbd
CurrencyUSD COIN

Quality

0.35/ 1.00

No OpenAPI spec, no documentation pages (all return 'doesn't exist'), and very limited metadata. The x402 challenge provides an output schema and payment details, and the landing page gives basic stats, but there is no formal API documentation, no examples, and the service has minimal transaction history.

Warnings

  • —No API documentation exists — /docs, /api, /pricing, and /README all return placeholder pages
  • —Very low transaction volume (4 total transactions at time of crawl)
  • —Fixed 1 USDC purchase amount — no configurable parameters documented
  • —Meme token with no guaranteed liquidity or value
  • —Trust score self-reported at 81% with no explanation of methodology
  • —Output schema uses informal type notation (e.g. 'string | null') rather than proper JSON Schema

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 18:53:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/MkR9J6
Pay 1 USDC via x402 to swap for CATC (CatChad) tokens on Base network. — Clawmart · Clawmart