A chain being known to your wallet library does not mean every swap provider supports every execution mode on it. Represent network configuration and provider capability as separate data.
A proposed configuration split
| Layer | Examples |
|---|---|
| Chain | Chain ID, native asset, explorer policy |
| RPC | Endpoint, expected chain, historical-read capability |
| Provider | API version, native sentinel, supported modes |
| Deployment | Router or verifier identity by chain and version |
PancakeSwap's package overview separates chains, tokens, routing and execution helpers. That modularity is a useful reminder that a token object is not a complete execution configuration.
Make unsupported explicit
Use an unavailable state for a provider-chain-mode combination. Do not fall back to an arbitrary router or reinterpret a native sentinel when a configuration entry is missing. A valid address from another chain can still point to the wrong code.
Version configuration changes. Record which version produced each executable payload so an incident can distinguish old assumptions from a new rollout. Avoid mutating a shared global configuration while a wallet request is already under review.
Validate on startup and at use
Check RPC chain identity, required deployment entries and unit mappings. At runtime, verify that a quote's chain and execution mode match the selected combination. Current support can change, so update capabilities from documented provider information through a reviewed process.
A focused configuration test intentionally removes one router entry and disables one mode. The form should explain the unsupported combination before requesting a quote, while still allowing unaffected chains and modes to operate.
Sources & verification (1)
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- SDKs
PancakeSwap package roles
https://developer.pancakeswap.finance/sdks/overview