8 posts tagged with "AI Agents"

A BSC memecoin sniper bot watches PancakeSwap and other BSC DEXes for newly-added liquidity pairs, then races to buy a small position before the token pumps or rugs. BSC remains the highest-volume memecoin chain in 2026 — over $1.5B in daily DEX volume according to DefiLlama, with hundreds of new tokens listed every week. Building a sniper requires three things: a mempool or events listener for new pairs, a swap API that handles the BSC decimals gotcha (USDT and USDC are 18 decimals on BSC, not 6), and a slippage-tolerant executor that retries on revert. Using swapapi.dev removes the auth and rate-limit pain — one GET request per quote, no API key, supports BSC (chain ID 56) natively.

This guide walks through a production-quality BSC sniper in TypeScript using viem and swapapi.dev. By the end you'll have a ~250-line Bun script that detects new pairs, checks safety conditions, and executes with the slippage retry pattern.

Building a crypto arbitrage bot across EVM chains comes down to three things: quotes from every chain in parallel, a fast comparison loop that spots price gaps larger than fees, and a slippage-tolerant executor that actually lands the trade before the gap closes. Arbitrage windows on EVM chains typically last under 30 seconds on majors and 2-10 seconds on L2s, which means your bot's latency budget is tight — every extra HTTP round-trip is another trade lost. Using swapapi.dev as the swap backend removes two of the biggest latency sources: no API key to validate, no account rate limits to juggle. One GET request per chain, calldata back, submit.

This guide walks through a production-quality arbitrage bot in TypeScript that scans the same trading pair across Ethereum, Base, Arbitrum, Optimism, and Polygon in parallel, ranks the opportunities, and executes with the slippage retry pattern. By the end you'll have ~250 lines of Bun + viem code that you can deploy and start scanning.

Building an AI agent for memecoin trading comes down to four pieces: an LLM that picks what to trade, a swap API that returns executable calldata, a wallet that signs transactions, and — most importantly — a slippage retry loop that handles the inevitable reverts. Memecoin volume on Ethereum and Base routinely exceeds $2 billion per day, and the share handled by autonomous agents is growing fast. But memecoins revert constantly: they're volatile, many charge transfer taxes, and the first quote you get is rarely the price you actually execute at. This guide walks through a production-quality AI memecoin trading agent in TypeScript, using swapapi.dev as the swap backend because it's the only aggregator that requires no API key — meaning your agent can self-execute without a human onboarding step.

By the end, you'll have a ~200-line Bun script that takes an LLM decision, fetches a quote, retries on revert with escalating slippage, and enforces safety guardrails like max position size and a token blacklist.

The best memecoin swap API for an AI trading agent is one that returns executable calldata in a single request, accepts a high maxSlippage value, and finds routes for fee-on-transfer tokens — without requiring an API key. Memecoin volume on Ethereum and Base routinely exceeds $2 billion in 24-hour DEX trades, and a meaningful share of those trades come from autonomous agents that need to react in seconds. The catch: memecoins revert constantly. They're volatile, many have transfer taxes, and the first attempt at a quote often fails on-chain. The right API has to support the retry-with-higher-slippage pattern as a first-class workflow, not as an afterthought.

This guide compares the 5 best memecoin swap APIs available to AI agents in 2026, ranked by how well they handle the realities of memecoin trading: high slippage, fee-on-transfer tokens, agentless authentication, and revert recovery.

This guide walks you through building a production-ready crypto trading bot using swapapi — the only DEX aggregator API that requires no API key or authentication.

Most crypto APIs require signup, email verification, and API key management. This guide lists the free APIs that don't — just make a request and get data.

TL;DR​

swapapi is the only DEX aggregator API that AI agents can use without API keys. A single GET request returns executable calldata — no authentication, no SDK, no state management.

TL;DR​

Every major DEX aggregator API — 1inch, 0x, Paraswap, Li.Fi — requires an API key. swapapi doesn't. It's free, requires no signup, and works with a single GET request. Here's why.