Blockaid

• Name: Blockaid
• URL: https://blockaid.io/
• Category: onchain security / transaction-scanning and threat-detection platform
• Tags: ethereum-ecosystem
• Summary: Blockaid is transaction-review and policy middleware for wallets and other onchain operators. The interesting part is not the warning banner. It is who scores risk, which feeds get trusted, and when a partner turns a verdict into a hard stop.
• What it does:
  • Provides security products for end-user protection, onchain monitoring, fraud prevention, and operational cosigning / policy enforcement
  • Offers official SDKs and API clients for integrating Blockaid scanning into applications
  • Exposes transaction- and signature-scanning flows through EVM JSON-RPC-oriented API surfaces
  • Markets threat intelligence built from direct integrations, onchain indexing, clustering / machine-learning systems, and internet-wide offchain scanning
  • Serves wallets, protocols, exchanges, banks, hedge funds, and other operators that want a screening layer in front of user or treasury actions
• Key claims:
  • The homepage describes Blockaid as a real-time detection platform for web3 builders and operators to measure performance, mitigate risk, and prevent theft
  • Official materials position the platform around stopping scams, drainers, hacks, and social-engineering-driven fraud before assets move
  • Public SDK materials show official REST API support for scanning EVM JSON-RPC payloads from server-side TypeScript/JavaScript and Go
  • GitHub organization branding frames the tooling around protecting users from fraud, phishing, and hacks rather than around one narrow phishing-list product
  • The open product surface implies the real leverage is in classification policy, partner integration defaults, and whether a result is advisory or blocking
• Whitepaper: No classic whitepaper or litepaper was found during this pass. Primary-source snapshots were saved in ../whitepapers/blockaid-primary-sources-2026-04-22.md.
• Sources:
  • https://blockaid.io/
  • https://github.com/blockaid-official
  • https://github.com/blockaid-official/blockaid-client-node
  • https://github.com/blockaid-official/blockaid-client-go

Internal linkages

• Best comparisons: blowfish and hypernative.

Control surface

• The power is offchain: simulation, clustering, threat feeds, policy thresholds, and partner defaults.

• The visible wallet prompt is the last inch of the stack. The real decision usually happened earlier when Blockaid or an integrating wallet decided what counts as safe enough.

• Treat it as a risk-classification layer around onchain intent, not as an onchain security primitive.

• Last reviewed: 2026-05-25 UTC