x402basequality 0.72

Track whale wallet movements and large transactions on Base via x402 micropayments for $0.02/call.

Price
per_call
Protocol
x402
Verified
no
Endpoint
https://silverback-x402.onrender.com/api/v1/whale-moves

What it does

The Silverback whale-moves endpoint tracks large wallet movements and whale transactions on EVM chains (defaulting to Base, chain ID 8453). It is part of the Silverback x402 DeFi Intelligence API, which provides 11 pay-per-use endpoints covering swap execution, technical analysis, yield intelligence, arbitrage scanning, token audits, portfolio tracking, and more — all payable via x402 micropayments in USDC on Base, Solana, or SKALE.

The whale-moves endpoint accepts a POST request with optional parameters: a token contract address, a minimum USD value threshold (default $100,000), a result limit (default 10, max 50), and a chain ID. The response includes whale transaction data with a summary, net flow, and top buyers/sellers. Pricing is fixed at $0.02 per call, settled in USDC via the x402 protocol. No subscription or API key is required — callers pay per request by signing a USDC authorization.

The endpoint is live and returns a 402 Payment Required challenge as expected for x402 endpoints. The OpenAPI 3.1.0 spec is well-documented with full schema definitions for all 11 endpoints. External documentation is referenced at docs.silverbackdefi.app, though the /docs path on the Render deployment itself returns a 404.

Capabilities

whale-trackingon-chain-analyticslarge-transaction-detectionevm-chain-supportx402-micropaymentsusdc-settlementbase-chaindefi-intelligencepay-per-use

Use cases

  • —Monitor large token transfers to detect whale accumulation or distribution patterns
  • —Track net flow of whale activity for a specific token before making trading decisions
  • —Build automated alerts for significant wallet movements exceeding a USD threshold
  • —Integrate whale intelligence into a DeFi trading bot for signal generation
  • —Analyze top buyers and sellers of a token to gauge institutional interest

Fit

Best for

  • —AI agents needing on-demand whale transaction data without API keys
  • —DeFi trading bots that want pay-per-use on-chain intelligence
  • —Developers building whale-alert dashboards on Base

Not for

  • —Historical whale data spanning months or years (endpoint returns recent moves)
  • —Non-EVM chains other than those supported (defaults to Base 8453)
  • —Free or subscription-based access — every call requires an x402 USDC payment

Quick start

curl -X POST https://silverback-x402.onrender.com/api/v1/whale-moves \
  -H "Content-Type: application/json" \
  -d '{"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "minValueUsd": 100000, "limit": 10, "chainId": 8453}'
# Returns 402 — complete x402 payment flow to receive whale data

Example

Request

{
  "limit": 10,
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "chainId": 8453,
  "minValueUsd": 100000
}

Endpoint

URLhttps://silverback-x402.onrender.com/api/v1/whale-moves
Transporthttp
Protocolx402
Pay to0xD34411a70EffbDd000c529bbF572082ffDcF1794
CurrencyUSD COIN

Quality

0.72/ 1.00

Full OpenAPI 3.1.0 schema with clear endpoint definitions, pricing, and parameter descriptions. The endpoint is live (402 challenge captured). However, no example response body is available, the external docs link is broken on the Render deployment, and the 402 challenge object was empty so exact payment details (asset address, amount in base units) could not be independently verified from the probe.

Warnings

  • —The /docs path on the Render deployment returns 404; external docs at docs.silverbackdefi.app were not crawled.
  • —The x402 challenge object captured was empty — payment parameters (asset, amount, network) could not be independently verified from the probe, only from the OpenAPI spec.
  • —No example response body is available; response schema for whale-moves is undocumented beyond a brief description.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-22 01:07:56Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Sf45NA