Backward-Compatible Blockchain API Schema Changes
Evolve API responses without breaking older clients, including optional fields, unknown enums, nullable values and exact quantity representations.
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Integration & review
Build clearer comparison workflows and deliberate access boundaries.
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API Errors vs Empty Blockchain Query Results
Distinguish a successful query with no matching records from unavailable data, authentication failures and partial responses in blockchain integrations.
Read the guideCache Keys for Blockchain API Responses
Build cache keys from network, method, asset, wallet and state context, and avoid serving latest-state results for historical or differently authorised queries.
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Server-Side API Configuration with Environment Variables
Configure blockchain API access on the server with explicit network and endpoint settings, while preventing credentials from entering browser bundles or logs.
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Rotating Blockchain API Keys Without Losing Control
Plan API key rotation with explicit ownership, overlap limits and revocation checks, while keeping credentials out of logs and public client code.
Read the guideEstimating API Credits for Data Queries
Estimate query cost from documented operation rules, pagination and request budgets, while keeping a cost estimate separate from actual metered usage.
Read the guideConnection Tests vs Wallet Imports in API Integrations
Design a minimal access check that validates configuration without silently fetching wallet history, reserving a large budget or starting an import.
Read the guideObservability for Blockchain API Integrations
Monitor latency, coverage, retries and interpretation failures with safe metrics, without leaking API keys or wallet-linked payloads into routine logs.
Read the guideWallet Login Nonces and Replay Protection
Protect wallet-signature login with single-use challenges, domain binding and expiry, without treating a reusable signed message as a permanent session.
Read the guideContract Wallet Signatures and ERC-1271 Verification
Verify contract-wallet signatures using the wallet’s supported interface and historical context, rather than assuming every account has a recoverable EOA signature.
Read the guideTenant Isolation in Wallet Data APIs
Enforce ownership on every wallet-data resource request, and prevent guessed IDs or shared caches from exposing another customer’s imports and reports.
Read the guideAPI Scopes vs Product Entitlements
Separate what a key is permitted to request from what an account’s plan enables, and enforce both checks consistently on each data operation.
Read the guideThe editorial approach
Useful questions.
Traceable explanations.
Each guide starts with a concrete developer question and separates technical observations from the interpretation an application adds. Worked examples use illustrative values; references point to standards and technical documentation.
Published by Indexbase. Explore related guides as your requirements develop, from a first data question to a more deliberate integration workflow.