# Public Accessibility Snapshot Agent (`jacksu/public-accessibility-snapshot-agent`) Actor Check public HTML pages for basic accessibility signals: language, headings, image alt text, form labels, link text, ARIA landmarks, risks, and evidence. - **URL**: https://apify.com/jacksu/public-accessibility-snapshot-agent.md - **Developed by:** [jack su](https://apify.com/jacksu) (community) - **Categories:** Business, Automation, AI - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $5.00 / 1,000 useful accessibility snapshot results This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events. Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases. In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours, and optionally produces a well-defined JSON output, datasets with results, or files in key-value store. In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server. Actors are written with capital "A". ## How to integrate an Actor? If asked about integration, you help developers integrate Actors into their projects. You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready. The best way to integrate Actors is as follows. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md). If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md). For usage examples, see the [API](#api) section below. For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt). # README ## Public Accessibility Snapshot Agent Run a lightweight accessibility preflight on public HTML pages. The Actor checks visible page evidence for language declaration, title, heading structure, image alt text, form labels, ambiguous link/button text, ARIA roles, landmarks, evidence snippets, and a stable change hash. This is designed for AI agents, website QA, growth teams, content operations, and procurement workflows that need a quick public-page risk snapshot before spending time on a full manual accessibility audit. ### What It Returns - `accessibilityScore`: a bounded basic-risk score from visible HTML evidence. - `riskLabels`: signals such as `missing_language`, `missing_h1`, `images_missing_alt`, `unlabeled_form_controls`, and `ambiguous_link_or_button_text`. - `languageSignal`, `headingOutline`, `imageAltSummary`, `formControlSummary`, `ambiguousTextSummary`, and `ariaLandmarkSummary`. - `evidenceSnippets` and `evidenceUrls` so an AI agent can explain the result. - `accessibilityHash` and `changeStatus` for change monitoring. ### Good Fits - Batch preflight of public marketing pages before a redesign or migration. - AI-agent website QA where you need structured accessibility risk labels. - Monitoring whether basic public-page accessibility signals changed. - Vendor or competitor website review where only public page evidence is used. ### Safety Boundary - Public HTTP and HTTPS pages only. - No browser rendering, JavaScript execution, login, cookies, form submission, CAPTCHA bypassing, external resource downloading, or screen-reader emulation. - Query strings, fragments, URL credentials, path parameters, private networks, localhost, `.local`, account-like sensitive paths, and token-like path segments are rejected or safely redacted. - HTML/text responses are capped at 3 MB. - This Actor is not a WCAG certification, legal compliance opinion, or substitute for a full manual audit. ### Pricing Behavior The pay-per-event setup charges only for useful public accessibility snapshots: - `apify-actor-start`: charged once when a run starts. - `useful-accessibility-snapshot-result`: charged only for a new or changed snapshot with enough visible evidence and any required focus-check match. The Actor intentionally does not configure `apify-default-dataset-item`, so errors, duplicate inputs, unchanged snapshots, focus misses, and low-evidence records can be written without charging the useful-result event. ### Example Input ```json { "startUrls": ["https://www.w3.org/WAI/"], "focusChecks": ["headings", "alt", "forms"], "requestTimeoutSecs": 20 } ```` # Actor input Schema ## `startUrls` (type: `array`): Public HTTP/HTTPS page URLs. Query parameters, fragments, credentials, path params, private-network hosts, and token-like account paths are rejected. ## `focusChecks` (type: `array`): Optional checks that must have visible evidence before the useful event is charged. Examples: alt, forms, headings, language, aria, links. ## `previousAccessibilitySnapshots` (type: `array`): Optional previous records from this Actor. If the stable accessibilityHash is unchanged, the result is written without charging the useful event. ## `requestTimeoutSecs` (type: `integer`): Maximum time in seconds to wait for the public page response. ## Actor input object example ```json { "startUrls": [ "https://www.w3.org/WAI/" ], "focusChecks": [], "previousAccessibilitySnapshots": [], "requestTimeoutSecs": 20 } ``` # Actor output Schema ## `datasetId` (type: `string`): No description # API You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup. ## JavaScript example ```javascript import { ApifyClient } from 'apify-client'; // Initialize the ApifyClient with your Apify API token // Replace the '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = {}; // Run the Actor and wait for it to finish const run = await client.actor("jacksu/public-accessibility-snapshot-agent").call(input); // Fetch and print Actor results from the run's dataset (if any) console.log('Results from dataset'); console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`); const { items } = await client.dataset(run.defaultDatasetId).listItems(); items.forEach((item) => { console.dir(item); }); // 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs ``` ## Python example ```python from apify_client import ApifyClient # Initialize the ApifyClient with your Apify API token # Replace '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = {} # Run the Actor and wait for it to finish run = client.actor("jacksu/public-accessibility-snapshot-agent").call(run_input=run_input) # Fetch and print Actor results from the run's dataset (if there are any) print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"]) for item in client.dataset(run["defaultDatasetId"]).iterate_items(): print(item) # 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start ``` ## CLI example ```bash echo '{}' | apify call jacksu/public-accessibility-snapshot-agent --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=jacksu/public-accessibility-snapshot-agent", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "Public Accessibility Snapshot Agent", "description": "Check public HTML pages for basic accessibility signals: language, headings, image alt text, form labels, link text, ARIA landmarks, risks, and evidence.", "version": "0.1", "x-build-id": "2iPK2ZQblMt89BkAS" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/jacksu~public-accessibility-snapshot-agent/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-jacksu-public-accessibility-snapshot-agent", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/jacksu~public-accessibility-snapshot-agent/runs": { "post": { "operationId": "runs-sync-jacksu-public-accessibility-snapshot-agent", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/jacksu~public-accessibility-snapshot-agent/run-sync": { "post": { "operationId": "run-sync-jacksu-public-accessibility-snapshot-agent", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "required": [ "startUrls" ], "properties": { "startUrls": { "title": "Start URLs", "minItems": 1, "maxItems": 20, "type": "array", "description": "Public HTTP/HTTPS page URLs. Query parameters, fragments, credentials, path params, private-network hosts, and token-like account paths are rejected.", "items": { "type": "string" }, "default": [ "https://www.w3.org/WAI/" ] }, "focusChecks": { "title": "Focus checks", "type": "array", "description": "Optional checks that must have visible evidence before the useful event is charged. Examples: alt, forms, headings, language, aria, links.", "items": { "type": "string" }, "default": [] }, "previousAccessibilitySnapshots": { "title": "Previous accessibility snapshots", "type": "array", "description": "Optional previous records from this Actor. If the stable accessibilityHash is unchanged, the result is written without charging the useful event.", "items": { "type": "object" }, "default": [] }, "requestTimeoutSecs": { "title": "Request timeout", "minimum": 5, "maximum": 60, "type": "integer", "description": "Maximum time in seconds to wait for the public page response.", "default": 20 } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } } } ```