WCAG MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| list-principlesA | Lists all four WCAG 2.2 principles: Perceivable, Operable, Understandable, and Robust. |
| list-guidelinesA | Lists WCAG 2.2 guidelines, optionally filtered by principle number (1-4). |
| list-success-criteriaA | Lists WCAG 2.2 success criteria with optional filters by level (A, AA, AAA), guideline (e.g., "1.1"), or principle (1-4). |
| get-success-criteria-detailB | Gets the normative success criterion requirements - just the title and exception details without Understanding documentation. |
| get-criterionA | Gets full details for a specific WCAG success criterion by its reference number (e.g., "1.1.1", "2.4.7", "4.1.2"), including complete Understanding documentation. |
| get-guidelineA | Gets full details for a specific WCAG guideline including all its success criteria. |
| search-wcagB | Searches WCAG 2.2 success criteria by keyword in titles and descriptions. |
| get-criteria-by-levelA | Gets all success criteria for a specific conformance level. Optionally includes lower levels (e.g., AA includes A). |
| count-criteriaB | Returns counts of success criteria grouped by level, principle, or guideline. |
| list-techniquesB | Lists WCAG techniques, optionally filtered by technology (html, aria, css, pdf, general, etc.) or type (sufficient, advisory, failure). |
| get-techniqueB | Gets details for a specific technique by ID (e.g., "H37", "ARIA1", "G94", "F65"). |
| get-techniques-for-criterionB | Gets all techniques (sufficient, advisory, and failures) for a specific success criterion. |
| search-techniquesC | Searches techniques by keyword in titles. |
| get-failures-for-criterionC | Gets failure techniques (common mistakes) for a specific success criterion. |
| get-glossary-termB | Gets the definition of a WCAG glossary term. |
| list-glossary-termsB | Lists all WCAG glossary terms. |
| search-glossaryC | Searches the WCAG glossary by keyword. |
| whats-new-in-wcag22B | Lists all success criteria that were added in WCAG 2.2. |
| get-full-criterion-contextC | Gets comprehensive context for a success criterion including techniques, test rules, and related glossary terms. |
| get-server-infoB | Returns information about this WCAG MCP server and data source. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 20 tools
Most tools have distinct purposes targeting different WCAG entities (criteria, techniques, glossary terms, guidelines), but some overlap exists: get-criteria-by-level and list-success-criteria both retrieve criteria with filtering, and get-criterion/get-success-criteria-detail/get-full-criterion-context all provide criterion details with varying depth. Descriptions help differentiate these, but an agent might initially confuse them.
Tool names follow a highly consistent verb_noun pattern throughout, using kebab-case uniformly. Verbs like get, list, search, and count are applied predictably to nouns like criteria, techniques, glossary-terms, and guidelines, making the set easy to navigate and understand.
With 20 tools, the count is slightly high but reasonable for the comprehensive WCAG domain, covering principles, guidelines, criteria, techniques, and glossary terms. It feels thorough rather than bloated, though some consolidation (e.g., merging criterion detail tools) could streamline it without losing functionality.
The toolset provides complete coverage for exploring WCAG 2.2, including listing, retrieving details, and searching across all key components (principles, guidelines, success criteria, techniques, glossary). It supports filtering, contextual information, and even highlights updates in WCAG 2.2, leaving no obvious gaps for an agent working in this domain.