# Fairvisor for FinTech & Payments

URL: https://fairvisor.com/for/fintech/

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 API governance for financial infrastructure Per-partner quotas, ASN-aware policies, and predictable failure modes — before a burst from one counterparty becomes your incident.
Deploy in shadow mode What Fairvisor Does for FinTech Per-Partner Quotas Enforce limits by counterparty, not just by IP or key:
Request budgets per partner integration Separate rate envelopes for prod vs sandbox traffic Hard stops with deterministic failure — no silent overruns ASN-Type Policies Differentiate traffic by network origin type:
Residential vs hosting vs datacenter signals at the edge Stricter enforcement for automation-originated traffic Configurable trust tiers by ASN category Audit Trail Every enforcement action is logged with context:
Which policy fired, on which identity, at what time Cost impact per partner per window Exportable for compliance and incident response workflows Predictable Failure Over Silent Overage Budget-aware enforcement means failures are deterministic:
Partners get a 429 with policy context, not a mystery error Overage triggers a defined playbook — throttle, block, notify No invoice surprises from third-party API cost spikes Spike and Credential Stuffing Defense Rate shapes that catch bots and burst abuse:
Velocity controls on login and auth endpoints Burst shaping with cooldown windows IP reputation + ASN signals to distinguish legitimate load from automated probes Sandbox and Production Isolation Separate policies for sandbox and production traffic prevent test bursts from consuming production budgets. Distinct quotas, keys, and alerting channels keep partner onboarding noise away from live transaction paths. Audit Trail Example What Fairvisor logs when a partner triggers a budget limit:
{ "event": "limit_triggered", "timestamp": "2026-02-14T03:17:42Z", "limit_key": "partner:acme-payments", "action": "throttle", "policy_version": "v47", "rule": "per-partner-daily-budget", "consumed": 0.94, "threshold": 0.95, "request": { "path": "/v2/transactions/verify", "method": "POST", "asn_type": "hosting" } } Every entry includes: which partner, which rule, which action, which policy version, what the request looked like. Exportable for compliance and IR workflows. → Decision tracing | Platform governance
Who This Is For Payments infrastructure with partner API access Open banking platforms with regulated data endpoints FinTech products that call expensive third-party APIs (KYC, fraud, enrichment) Any financial API with multi-tenant or multi-partner traffic FAQ How does Fairvisor enforce per-partner quotas? Limits are defined by counterparty identity — API key, org_id, partner name in JWT claims — not just IP. Each partner has isolated counters and a defined quota. When they hit their limit, they get a 429 with policy context. Other partners are entirely unaffected. What is ASN-type enforcement? Fairvisor classifies inbound traffic by network origin: residential ISP, hosting/datacenter, mobile carrier. Different rate limits apply per class. Hosting-originated traffic gets stricter defaults by default — most credential stuffing and automated probing comes from there. Configurable per named ASN or ASN category. How complete is the audit trail for a limit event? Every enforcement action logs: timestamp, identity (partner/key/user), policy version, rule that fired, action taken, request path, ASN type, and cost impact. Exportable for compliance and IR workflows. → Decision tracing | Platform governance How quickly can a compromised partner be shut down? Kill-switch is intended for rapid containment with role-gated actions and audit logging. Validate propagation timing in your own deployment and runbooks. Does Fairvisor integrate with our identity provider? Yes. Limits follow JWT claims from your existing auth tokens — org_id, partner_id, key_type, or any custom claim. No coupling between your auth system and Fairvisor’s enforcement logic. Can we enforce different limits for card checks vs money movement endpoints? Yes. Policies can be scoped by route/path groups and partner identity, so low-risk endpoints keep higher throughput while sensitive payment flows use stricter limits and tighter burst controls. Why teams choose Fairvisor No surprise overages Deterministic enforcement with defined playbooks — partners get a 429, not an invoice shock. Partner-level visibility Per-counterparty quotas with a complete audit trail for every enforcement action. Built for regulated environments Policy governance with exportable logs ready for compliance and IR workflows. Put enforceable controls in front of your financial APIs Deploy in shadow mode Also relevant For Compliance Immutable audit logs, RBAC, and SOC 2 control mapping.
For API-First SaaS Per-tenant limits, noisy neighbor protection, and tiered plan enforcement.
For SRE Sub-millisecond enforcement, graceful degradation, and SLO alerting.