# Zefr

> Zefr is an ad-tech content intelligence company that classifies social video, image, audio
> and text so advertisers can buy and measure media against brand safety and suitability
> standards. Its classification engine labels content across YouTube, Meta (Facebook and
> Instagram), TikTok, Snapchat, Google Ads and DV360 against the 4A's and GARM frameworks,
> and its Brand Suitability Suite lets brands apply pre-bid controls and post-bid measurement
> from one place.

**This file is generated by API Evangelist, not published by Zefr.** Zefr serves no `llms.txt`
on any host it controls (`https://zefr.com/llms.txt` → 404). It is assembled from Zefr's own
public pages and from the artifacts in this repository so an agent has a grounded starting
point. Anything Zefr has not published is marked as absent below rather than invented.

## API status

Zefr has **no public developer program**. As of 2026-08-12 there is no developer portal, no
API reference, no OpenAPI/AsyncAPI/GraphQL contract, no SDK, no CLI, no MCP server and no
agent card at any Zefr-controlled host. `developer.zefr.com` and `docs.zefr.com` do not
resolve. Production API infrastructure demonstrably exists — `api.zefr.com` is a Google
Apigee gateway, alongside `api2.zefr.com` and `api-eu1.zefr.com` — but no proxy resolves for
any anonymous caller and nothing about it is documented publicly. Access runs through a sales
conversation.

## Identity

- [OpenID Connect discovery](https://login.zefr.com/.well-known/openid-configuration): Zefr's
  Auth0 custom domain; serves OIDC 1.0 discovery anonymously.
- [OAuth 2.0 Authorization Server Metadata](https://login.zefr.com/.well-known/oauth-authorization-server):
  RFC 8414 metadata for the same issuer.
- [JWKS](https://login.zefr.com/.well-known/jwks.json): signing keys.

Authorization Code with PKCE (S256), client credentials, refresh token, device code and
token exchange grants are advertised; DPoP (ES256) is supported. Only standard OIDC identity
scopes are published — no Zefr product API scopes exist publicly.

## Products

- [Brand Safety & Suitability](https://zefr.com/solution/brand-safety-suitability): content-level
  decisioning against 4A's and GARM standards.
- [Data Solutions](https://zefr.com/solution/data-solutions)
- [Media Services](https://zefr.com/solution/media-services)
- [Brand Misappropriation](https://zefr.com/solution/brand-misappropriation)
- [AI-Generated Content](https://zefr.com/solution/ai-generated-content)
- [Viewability](https://zefr.com/solution/viewability)
- [Media Quality](https://zefr.com/solution/media-quality)
- [Zefr Labs](https://zefr.com/solution/zefr-labs)

## Technology

- [Classification Engine](https://zefr.com/technology/zefr-classification)
- [Standards & Suitability Framework](https://zefr.com/technology/standards-suitability-framework)
- [Cross-Platform Intelligence](https://zefr.com/technology/cross-platform-intelligence-youtube-meta-tiktok-snapchat-google-ads-dv360)
- [Controls: Pre vs Post Impressions](https://zefr.com/technology/controls-pre-vs-post-impressions)

## Access

- [Brand Suitability Suite login](https://suitability.zefr.com/) — existing customers only.
- [Request a demo](https://zefr.com/request-a-demo) — the only commercial entry point.
- [Contact](https://zefr.com/contact-us)

## Company

- [About](https://zefr.com/about) · [Leadership](https://zefr.com/about/leadership) ·
  [Engineering](https://zefr.com/about/engineering) · [Careers](https://zefr.com/about/careers)
- [Press](https://zefr.com/press) · [Resources](https://zefr.com/resources)
- [GitHub](https://github.com/ZEFR-INC) — infrastructure forks, ML research and legal documents;
  no API specification or client library.
- [Trust Center](https://trust.zefr.com/) — Drata-hosted; behind a bot challenge.

## Legal

- [Terms of Service](https://zefr.com/terms-of-services)
- [Privacy Policy](https://zefr.com/privacy-policy)

## Not published

No pricing page, status page, changelog, versioning policy, deprecation policy, SLA, rate
limits, `security.txt`, `api-catalog`, `ai-plugin.json`, agent card, MCP server, sandbox,
Postman collection, or API client SDK.