Chainalysis KYT/Reactor API
Blockchain analytics and crypto compliance API that screens cryptocurrency transactions and wallet addresses for AML risk, sanctions exposure, and illicit activity across 100+ blockchains.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
SOC2 Type II certified. Processes blockchain transaction data (pseudonymous but sensitive for law enforcement contexts). GDPR compliant for EU data subjects. Used by law enforcement and regulated institutions — data handling is enterprise-grade. No per-key scoping documented.
⚡ Reliability
Best When
You operate a regulated crypto exchange, OTC desk, or financial institution that needs authoritative blockchain analytics for AML compliance and sanctions screening of crypto transactions.
Avoid When
You need standard KYC identity verification, your transaction volumes don't justify enterprise pricing, or you're building a consumer crypto wallet without AML obligations.
Use Cases
- • Real-time transaction screening for crypto exchanges to detect sanctioned wallets before processing withdrawals
- • AML monitoring of incoming deposits to identify funds from darknet markets, ransomware, or mixers
- • Regulatory compliance reporting for VASP (Virtual Asset Service Provider) obligations
- • Law enforcement investigations tracing cryptocurrency flows across chains
- • Risk scoring of wallet addresses during user onboarding for crypto platforms
Not For
- • Traditional fiat KYC/AML — Chainalysis is blockchain-specific and does not verify human identities
- • Small crypto projects without regulatory obligations — pricing and access requirements are enterprise-grade
- • Real-time retail transaction flows requiring sub-100ms latency
Interface
Authentication
API key passed in Authorization header as Bearer token. Separate keys for sandbox and production. No public documentation on key scoping — single key carries full account access. Enterprise account required before keys are provisioned.
Pricing
One of the highest-barrier KYC/AML APIs to access. No sandbox without enterprise agreement. Pricing is contract-based with significant minimum commitments. Targeted at regulated financial institutions, not startups.
Agent Metadata
Known Gotchas
- ⚠ Risk scores are probabilistic exposure-based, not binary — agents must implement threshold logic appropriate to their compliance policy
- ⚠ Blockchain data has inherent confirmation lag — agents must decide how many confirmations to wait before screening
- ⚠ UTXO-based chains (Bitcoin) have different exposure calculation models than account-based chains (Ethereum) — agents treating them identically will get incorrect risk assessments
- ⚠ New blockchains and tokens are added over time — coverage gaps exist; agents must handle unknown asset types gracefully
- ⚠ Sanctions lists update in near-real-time — cached results from minutes ago may be stale for high-risk screening
- ⚠ Access requires enterprise contract negotiation — no instant sandbox; development cycles are long before production
Alternatives
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Scores are editorial opinions as of 2026-03-07.