SlashNext

SlashNext is an AI-native phishing and social-engineering threat detection company founded by Atif Mushtaq (an architect of FireEye's core malware sandbox). Its Real-Time Phishing Threat Intelligence is delivered through the SlashNext On-demand Threat Intelligence (OTI) REST API at oti.slashnext.cloud, which offers URL and host reputation lookups, real-time cloud SEER-engine URL scanning in both asynchronous and blocking modes, and forensic downloads (screenshot, HTML, and rendered text) keyed by scan id, plus per-tenant API quota status. Responses are available as JSON, CSV, or plaintext and every request authenticates with a per-tenant API key passed as the authkey parameter. SlashNext was acquired by Varonis Systems in August 2025 and its detection capabilities are being integrated into the Varonis Email Security and MDDR platform.

SlashNext publishes 1 API on the APIs.io network. Tagged areas include Company, Security, Cybersecurity, Phishing, and Threat Intelligence.

SlashNext’s developer surface includes documentation, authentication, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

10.0/100 minimal ▬ flat Agent 5/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Company Security Cybersecurity Phishing Threat Intelligence Email Security Anti-Phishing

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 10.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 2.4 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 7.6 / 10

Agent readiness — 5/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/slashnext: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

SlashNext On-demand Threat Intelligence (OTI) API

RESTful phishing threat intelligence API. Look up URL/host reputation, run real-time SEER-engine URL scans (async url/scan and blocking url/scansync), pull forensic downloads (s...

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Slashnext Authentication

apiKey · 1 scheme

SECURITY

Slashnext Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conventions

Conventions

ErrorCatalog

ErrorCatalog

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: slashnext
name: SlashNext
description: SlashNext is an AI-native phishing and social-engineering threat detection company founded by Atif Mushtaq (an
  architect of FireEye's core malware sandbox). Its Real-Time Phishing Threat Intelligence is delivered through the SlashNext
  On-demand Threat Intelligence (OTI) REST API at oti.slashnext.cloud, which offers URL and host reputation lookups, real-time
  cloud SEER-engine URL scanning in both asynchronous and blocking modes, and forensic downloads (screenshot, HTML, and rendered
  text) keyed by scan id, plus per-tenant API quota status. Responses are available as JSON, CSV, or plaintext and every request
  authenticates with a per-tenant API key passed as the authkey parameter. SlashNext was acquired by Varonis Systems in August
  2025 and its detection capabilities are being integrated into the Varonis Email Security and MDDR platform.
url: https://raw.githubusercontent.com/api-evangelist/slashnext/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
- wing-venture-capital
x-acquired-by: varonis-systems
x-acquisition-date: '2025-08-28'
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Security
- Cybersecurity
- Phishing
- Threat Intelligence
- Email Security
- Anti-Phishing
tags_raw:
- Company
- Security
- Cybersecurity
- Phishing
- Threat Intelligence
- Email Security
- Anti-Phishing
- API
image: https://slashnext.com/wp-content/uploads/2021/03/SlashNext-Logo.png
apis:
- name: SlashNext On-demand Threat Intelligence (OTI) API
  description: RESTful phishing threat intelligence API. Look up URL/host reputation, run real-time SEER-engine URL scans
    (async url/scan and blocking url/scansync), pull forensic downloads (screenshot/html/text) by scan id, and check API quota.
    API-key auth via the authkey query parameter; JSON/CSV/plaintext responses.
  humanURL: https://www.varonis.com/platform/email-security
  baseURL: https://oti.slashnext.cloud/api/
  tags:
  - Threat Intelligence
  - Phishing
  - URL Scanning
  - Reputation
  properties:
  - type: Authentication
    url: authentication/slashnext-authentication.yml
  - type: Conventions
    url: conventions/slashnext-conventions.yml
  - type: ErrorCatalog
    url: errors/slashnext-error-codes.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://slashnext.com
- type: Documentation
  url: https://www.varonis.com/platform/email-security
- type: Lifecycle
  url: lifecycle/slashnext-lifecycle.yml
- type: Authentication
  url: authentication/slashnext-authentication.yml
- type: Conventions
  url: conventions/slashnext-conventions.yml
- type: ErrorCatalog
  url: errors/slashnext-error-codes.yml
- type: DomainSecurity
  url: security/slashnext-domain-security.yml
- type: LLMsTxt
  url: llms/slashnext-llms.txt
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 6
  pass: local-v1

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