Nikita S

Monitor Shopify stores via products.json for MAP compliance, repricing, competitor price drops, stock changes, and clean delta feeds with optional Slack/Discord alerts.

Detect the delimiter, quote char, header presence, and encoding of any CSV/TSV/PSV file from a small sample. Outputs a `delimiter_decision` row with confidence and alternatives.

Rename CSV column headers to snake_case, camelCase, PascalCase, kebab-case, SCREAMING_SNAKE, lowercase, Title Case, or preserve. Per-column override map. Pure JS, zero deps, zero anti-bot risk.

Compute a data-quality scorecard for CSV rows: missing required fields, bad emails, bad URLs, duplicate rows, completeness %.

Fetch public pages and extract <meta>, OpenGraph, Twitter card, and JSON-LD type information. Outputs structured per-URL rows for SEO audits and competitive intelligence.

Check the status of many public URLs in parallel via HEAD (with GET fallback). Records the final status, the redirect chain, response time, and content type. Useful for link-rot audits and sitemap URL validation.

Validate a stream of JSONL/NDJSON records against a JSON Schema (draft-07 subset) one line at a time. Per-record error rows, drop-or-tag policy, summary by error type. Pairs with json-schema-validator + jsonl-to-csv.

Stream a JSONL/NDJSON document (inline text or public URL) into a CSV. Auto-discovers columns from the union of all keys in document order of first appearance. No scraping required when text is provided inline.

Validate Open Graph, Twitter Card, and JSON-LD meta tags on a public page; emit per-field pass/warn/fail with structured fix-hints, ready for n8n/Make/Sheets alerts.

Compare two OpenAPI 3.0/3.1 specs (JSON or YAML) and emit per-endpoint / per-operation / per-schema change rows with a `breaking` flag. Pairs with the api-response-delta-monitor.

Monitor public product feeds in JSON, XML, RSS, Google Merchant, or CSV formats for price drops, stock changes, removed products, and clean stateful deltas.

Monitor public SaaS pricing pages and changelog/release-notes pages for plan-level and release-entry deltas. Structured output for GTM, sales enablement, and competitive intelligence.

Monitor product pages with Schema.org Product JSON-LD for price drops, sale starts, availability changes, and clean stateful deltas across non-Shopify and non-WooCommerce stores.

Validate security response headers on any public URL: HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. Per-Header pass/warn/fail with documented fix-hints.

Monitor public sitemap.xml files for new URLs, removed URLs, lastmod changes, and clean stateful deltas for SEO, RAG indexing, and content operations.

Parse any public sitemap.xml (or sitemap index) and extract every <image:image> extension entry. Emits one row per (URL, image) with loc, title, caption, geo_location, license.

Fetch any public Google News sitemap (news: namespace) and emit per-article rows: title, publication date, publication name+language, genres, keywords, stock tickers. Handles sitemap indexes. Pairs with sitemap-delta-monitor as a news-only pre-filter for media monitoring and RAG news feeds.

Verify HMAC-SHA256/SHA1/SHA512, Stripe-Signature, GitHub X-Hub-Signature-256, Apify webhook, and Bearer-token webhook payloads against a shared secret. Constant-time compare, per-check pass/fail, structured reason codes for n8n/Make/Sheets alerts.

Monitor public WooCommerce Store API catalogs for competitor price drops, stock changes, sale starts, new products, and removed products with clean stateful deltas.

Compare two CSV snapshots keyed on one or more columns and emit per-row added/removed/changed rows with a per-cell before/after view. Pairs with sitemap / price / product delta monitors that emit CSV-shaped snapshots.