Data providers & APIs

Basecompass reads a lot of sources so you don't have to. Here's every external provider we use and exactly what it powers — and the rule that ties them together: when a provider is down, rate-limited, or simply doesn't know, the signal it feeds reads unknown. We never guess to fill a gap.

On-chain

• Base RPC — the chain itself. Sellability simulation, pool balances and routability, the deployer's transaction count, and composing the swap transactions for one-click trading. Reads only; the chain is the source of truth for anything about your money.
• Alchemy — indexed log streaming and archival reads. This is how the watcher spots a launch the moment it becomes tradable. A paid provider, so we lean on the DB first and call it deliberately.
• Uniswap (on Base) — the venue behind in-app trading; trading is Uniswap-only. v2: the classic router. v3: QuoterV2 for quotes, SwapRouter02 for the swap. v4: the V4 Quoter for quotes and the Universal Router — with Permit2 for approvals — for the swap. The token's deepest real pool is resolved live from the chain at trade time.

Signals & security

• Blockscout — the Base explorer API: holder counts, the top-holder list behind the bubble map and concentration, and contract-source verification. Credit-metered, so a daily guard stops holder/source reads when the budget runs low rather than overspending.
• GoPlus Security — token-security checks: honeypot flag, buy/sell tax, whether the contract is mintable, and owner privileges (can the owner reclaim ownership or pause transfers).
• Arkham Intelligence (arkm.com) — entity intelligence on Base: labels for wallets and deployers (exchanges, launchpads, funds, named entities), the "smart money" and notable-holder callouts, and funding-source tracing that ties deployers funded from the same wallet into the sybil ring graph. Cached hard and budget-guarded.

Market data

• GeckoTerminal — price, market cap / FDV, pool liquidity, 24-hour volume, and the minute-candle OHLCV price chart. The keyless API rate-limits our server's IP, so calls are paced and adapt to it.
• CoinGecko — the same on-chain market data, used as a fallback: when a GeckoTerminal call is rate-limited, we retry it through CoinGecko so freshness doesn't stall. Budget-capped so it stays within the free plan.
• DexScreener — the DEX paid badge: whether a token has a paid, approved DexScreener profile.

Platform

• No accounts. basecompass has no sign-in, no wallets, no user data — it's a read-only intelligence surface.
• Cloudflare Turnstile — a privacy-preserving bot check on scanning and comments, so those stay abuse-resistant without tracking you.

Why list this at all

Because the whole product is about honesty over hype — every launch on Base, with bearings. Every number you see traces back to one of these sources, and every gap is marked as a gap. If a provider changes or an outage shows up in the data, you'll see it as unknown, not as a confident wrong answer.