# Silver Tail

**Canonical:** https://apis.io/providers/silver-tail/  
**APIs profiled:** 0

Silver Tail Systems was a website fraud and abuse detection company founded in 2008 in Menlo Park, California by Mike Eynon and Laura Mather, both formerly on the anti-fraud team at eBay/PayPal. Its product collected and analyzed real-time web traffic to deliver web session intelligence and predictive analytics that detected fraud, account takeover, and abuse on banking and commerce websites. Backed by Andreessen Horowitz (a16z) among others, the company raised roughly $20M across three rounds before being acquired by RSA, the security division of EMC, in 2012 and rebranded as RSA Web Threat Detection. It no longer exists as an independent company and publishes no live developer or API surface.

## Kin Score — 5.0 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 5.0).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

Company, Security, Fraud Detection, Anti-Fraud, Predictive Analytics, Web Session Intelligence, Account Takeover, Financial-Services, Acquired, Defunct

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/silver-tail/). Scores are computed from the provider's own public artifacts under a published rubric.