Whale Alert API
Surface large Ethereum and Base transfers inside the agent when you track market sentiment or crypto product triggers.
Overview
Whale Alert is a MCP server for the Grow phase that tracks large whale transactions on Ethereum and Base for agent-driven market monitoring.
What is this MCP server?
- Track large whale transactions on Ethereum mainnet
- Includes Base chain coverage for L2 activity
- Exposes data through hosted SSE MCP remote
- x402 micropayment access via whale-alert.api.klymax402.com
- Version 1.1.0 with GitHub source whale-alert-x402
- Supports Ethereum and Base networks
- Server version 1.1.0
- Remote MCP transport SSE
What problem does it solve?
Watching block explorers for big transfers breaks your flow when you are building alerts, content, or dashboards that should react to whale activity automatically.
Who is it for?
Solo builders making crypto alert bots, research threads, or portfolio dashboards that need a quick whale-transaction signal layer.
Skip if: Production trading systems that need sub-second execution, mempool coverage, or compliance-grade market data without x402 billing.
What do I get? / Deliverables
Your agent can pull recent large on-chain moves on Ethereum and Base into research, notifications, or analytics workflows without custom indexer code.
- Whale transaction summaries the agent can cite in alerts or docs
- Chain-specific large-transfer context for Ethereum and Base
- Faster prototypes for monitoring features without running an indexer
Recommended MCP Servers
Journey fit
Whale movement feeds support the grow phase when you monitor signals that affect retention, alerts, or content bets. Analytics is the right shelf for on-chain transaction monitoring rather than wallet development or smart-contract authoring.
How it compares
On-chain whale monitoring API over MCP, not a wallet, DEX, or full blockchain indexer you self-host.
Common Questions / FAQ
Who is whale-alert for?
Indie developers and content operators building Ethereum- or Base-aware tools who want large-transfer visibility inside their coding agent.
When should I use whale-alert?
Use it while prototyping alert rules, drafting market commentary, or validating that your product should react to high-value transfers.
How do I add whale-alert to my agent?
Add the SSE remote https://whale-alert.api.klymax402.com/mcp in your MCP client configuration and complete any x402 micropayment steps the provider requires.