# Everstring

**Canonical:** https://apis.io/providers/everstring/  
**Website:** https://www.everstring.com/  
**APIs profiled:** 1

EverString was a B2B predictive marketing and sales intelligence platform that used data science, machine learning, and a proprietary business data cloud to help go-to-market teams identify their best-fit accounts. Its capabilities included predictive lead and account scoring, account-based marketing segmentation, firmographic enrichment, similar-company discovery, ML-generated keywords, and industry classification, exposed to developers through an Enrichment API on developer.everstring.com secured with access-token authentication. Founded in 2012 and backed by investors including Lightspeed Venture Partners, EverString was acquired by ZoomInfo in November 2019 and its data and predictive capabilities were folded into the ZoomInfo platform; the everstring.com website now redirects to ZoomInfo Operations and the standalone developer portal has been largely decommissioned. This profile documents the historical API surface and current public footprint.

## Kin Score — 8.6 / 100 (minimal)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (+0.0 from 8.6).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 4.8 |
| 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

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

## APIs (1)

- **EverString Enrichment API** — The EverString Enrichment API exposed EverString's data cloud, AI, and machine-learning components as a micro-service - similar-company discovery, ML-generated keywords, industr...

## Security (1)

- **Everstring Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Predictive Marketing, Sales Intelligence, Data Enrichment, Firmographics, Account Based Marketing, Lead Scoring, Machine-Learning, Acquired

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