# Yoast **Canonical:** https://apis.io/providers/yoast/ **Website:** https://yoast.com/ **APIs profiled:** 9 Yoast is the maker of the world's most popular WordPress SEO plugin, active on over 13 million sites, and is part of Newfold Digital. Yoast provides developer APIs for integrating SEO metadata, structured data (Schema.org), meta tags, sitemaps, and SEO analysis into headless WordPress sites and third-party platforms. Most of that surface ships as plugin code and runs on the customer's own WordPress install: the Yoast REST API (/wp-json/yoast/v1/get_head plus yoast_head_json on WP posts and pages), the Schema Aggregator API that emits a site's whole Schema.org graph as JSON-L, the Surfaces, Metadata and Schema PHP APIs, and — since Yoast SEO 27.5 — three read-only WordPress Abilities that hand SEO, readability and inclusive-language scores to AI agents. Yoast additionally operates one hosted API of its own, the MyYoast Provisioning (Subscription) API at my.yoast.com, a partner-gated Basic Auth surface for resellers, backed by an OpenID Connect issuer with dynamic client registration, PKCE and DPoP. Key products include Yoast SEO Free, Yoast SEO Premium, Yoast SEO for Shopify, WooCommerce SEO, Local SEO, Video SEO, and News SEO. ## Kin Score — 64.0 / 100 (strong) Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 64.0). | Facet | Score | |---|---| | Discoverability | 92.6 | | Contract Quality | 58.0 | | Governance | 55.3 | | Contract Governance | 55.3 | | Operational Transparency | 52.6 | | Developer Ergonomics | 73.2 | | Commercial Clarity | 60.5 | | Access Clarity | 60.5 | ## Agent readiness — 39.7 (agent-ready) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | derived | | Reversibility Documented | documented | | MCP Server | no | | Auth Clarity | yes | | Idempotency | no | | Error Semantics | documented | | OpenAPI Examples | documented | | Rate Limit Signal | documented | | Event Surface Described | no | | Agent Skills | derived | | Well Known Catalog | no | | Consent Identity | yes | | Agent Card | no | | Dry Run Mode | no | ## Access Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium). ## APIs (9) - **Yoast Surfaces API** — The Yoast Surfaces API provides a PHP interface for retrieving SEO metadata programmatically within WordPress. It exposes the YoastSEO() surface with methods to get metadata for... - **Yoast Metadata API** — The Yoast Metadata API provides a PHP interface to add, alter, or remove metadata in the of a WordPress document. Developers can hook into Yoast's meta tag output pipelin... - **Yoast Schema API** — The Yoast Schema API provides a PHP interface for customizing the Schema.org JSON-LD structured data output generated by Yoast SEO. Developers can add, remove, or modify schema ... - **Yoast Pages API** — WordPress page SEO metadata via WP REST API - **Yoast Posts API** — WordPress post SEO metadata via WP REST API - **Yoast SEO Head API** — Retrieve SEO metadata for any URL - **Yoast SEO Abilities API** — Yoast SEO registers its content-analysis results as WordPress Abilities (the Abilities API introduced in WordPress 6.9), making them discoverable and executable over the WordPre... - **Yoast Schema Aggregator API** — The Yoast Schema Aggregator exposes a site's aggregated Schema.org structured data over the WordPress REST API as paginated JSON-L, plus an XML schemamap listing every available... - **MyYoast Provisioning API** — The MyYoast Provisioning API (also called the Subscription API) is the one API Yoast hosts itself. It lets an approved Yoast provisioning partner create, read, renew, cancel, re... ## MCP servers (1) - **Yoast MCP Server** ## Agentic access (1) - **Yoast Agentic Access** — 5 operations ## Security (3) - **Yoast Authentication** — http/openIdConnect/none · 3 schemes - **Yoast Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC - **Yoast Vulnerability Disclosure** — Hackerone · security.txt · contact published ## Plans (1) - **Yoast Plans Pricing** ## Tags SEO, WordPress, Content Optimization, Schema, Metadata, Structured Data, Headless CMS, Content Analysis, Agent Readiness, Plugins --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/yoast/). Scores are computed from the provider's own public artifacts under a published rubric.