Agari

Agari is an email-security provider that pioneered and helped author the DMARC email-authentication standard to protect organizations from phishing, business email compromise (BEC), email spoofing, and brand impersonation. Founded in 2009, Agari was acquired by HelpSystems (now Fortra) in May 2021 and is delivered as Fortra's email-security portfolio, including DMARC Protection / Brand Protection, Phishing Defense, and Phishing Response. The Agari Platform exposes a RESTful JSON API secured with OAuth 2.0 Client Credentials for retrieving security telemetry, auditing users and domains, tracking DMARC policy enforcement, and integrating Agari data into SIEM and SOAR tooling. It was originally backed by Norwest Venture Partners and other venture investors before its acquisition.

Agari publishes 1 API on the APIs.io network. Tagged areas include Company, Email Security, Cybersecurity, DMARC, and Email Authentication.

Agari’s developer surface includes documentation, API reference, getting-started guide, authentication, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

17.9/100 emerging Agent 17/100 agent aware Full breakdown ↓
scored 2026-07-20 · rubric v0.4

1 APIs 0 Features

CompanyEmail SecurityCybersecurityDMARCEmail AuthenticationPhishingAnti-PhishingBrand ProtectionAPIREST

API Rating

API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4

Composite quality — 17.9/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 9.1 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 8.8 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/agari: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

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: agari
name: Agari
description: Agari is an email-security provider that pioneered and helped author the DMARC email-authentication standard
  to protect organizations from phishing, business email compromise (BEC), email spoofing, and brand impersonation. Founded
  in 2009, Agari was acquired by HelpSystems (now Fortra) in May 2021 and is delivered as Fortra's email-security portfolio,
  including DMARC Protection / Brand Protection, Phishing Defense, and Phishing Response. The Agari Platform exposes a RESTful
  JSON API secured with OAuth 2.0 Client Credentials for retrieving security telemetry, auditing users and domains, tracking
  DMARC policy enforcement, and integrating Agari data into SIEM and SOAR tooling. It was originally backed by Norwest Venture
  Partners and other venture investors before its acquisition.
url: https://raw.githubusercontent.com/api-evangelist/agari/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
x-acquired-by: fortra
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Email Security
- Cybersecurity
- DMARC
- Email Authentication
- Phishing
- Anti-Phishing
- Brand Protection
- API
- REST
apis:
- name: Agari Platform API
  description: RESTful JSON API for the Agari Platform, secured with OAuth 2.0 Client Credentials. Provides access to Agari
    email-security telemetry — alerts, domain tracking, DMARC policy-enforcement reporting, and user/domain auditing — with
    standard pagination, sorting, filtering, and searching, for integration into SIEM/SOAR workflows.
  humanURL: https://developers.agari.com/agari-platform
  baseURL: https://api.agari.com/v1
  properties:
  - type: Documentation
    url: https://developers.agari.com/agari-platform/docs
  - type: APIReference
    url: https://developers.agari.com/agari-platform/reference/overview
  - type: GettingStarted
    url: https://developers.agari.com/agari-platform/docs/quick-start
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://agari.com
- type: DeveloperPortal
  url: https://developers.agari.com/agari-platform
- type: Documentation
  url: https://developers.agari.com/agari-platform/docs
- type: APIReference
  url: https://developers.agari.com/agari-platform/reference/overview
- type: GettingStarted
  url: https://developers.agari.com/agari-platform/docs/quick-start
- type: Authentication
  url: authentication/agari-authentication.yml
- type: Conventions
  url: conventions/agari-conventions.yml
- type: ErrorCatalog
  url: errors/agari-problem-types.yml
- type: Conformance
  url: conformance/agari-conformance.yml
- type: Lifecycle
  url: lifecycle/agari-lifecycle.yml
- type: DomainSecurity
  url: security/agari-domain-security.yml
- type: LLMsTxt
  url: llms/agari-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence