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How Lasso learns your providers

Every provider has limits nobody wrote down: methods it doesn’t serve, how far back it keeps state, how wide an eth_getLogs range it accepts. Lasso learns these from the answers it already gets, then routes around them. You don’t configure them, and you don’t change your requests.

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What it learns

For each provider, Lasso learns:
  • Methods it refuses. A provider that keeps answering “method not supported” stops getting that method first.
  • How far back it serves. A provider that only keeps recent state stops getting reads for older blocks first.
  • Its eth_getLogs range limit. A provider that rejects wide ranges stops getting wide ranges first.
This runs on every profile: Lasso’s managed pools and your Custom profiles.

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How it acts

Learning only changes the order in which Lasso tries providers. A provider that can’t serve a request is tried after the ones that can. It is never removed, and Lasso always keeps the last route, so a request still has somewhere to go even if everything learned turns out to be wrong.

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How it stays correct

  • It needs repeated evidence. One odd answer doesn’t create a limit. A range limit, for example, needs failures from two separate requests close together.
  • A success clears it. If a provider later serves what it once refused, the learned limit goes away.
  • It fades. Learned limits expire unless new failures keep renewing them, so a provider that upgrades its plan gets traffic back on its own.
  • It’s scoped. Knowledge belongs to one provider account and one method. One customer’s credentials don’t teach Lasso about another’s.
  • It survives restarts. Lasso restores what it learned when a node restarts.

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What you control on a Custom profile

  • See it. Each provider’s learned knowledge, with its source, is in the profile; see Custom profiles.
  • Declare what you know. A limit you declare, such as your plan’s log range, always outranks a learned one.
  • Correct it. Reset a provider’s knowledge, or pause one learned hint for an hour, from the API or the dashboard.