MCP servers for Grok Build

Read-only bodyweight workout builder and exercise form cues from the Upfit iPhone app.

Diff two npm/PyPI versions or lockfiles: new install scripts, network/shell/eval calls, new deps.

Research, draft and score cited SEO articles with claim-level evidence and hard quality gates.

Is this AI/dev API down? Is this model deprecated, what replaces it? Live status for ~40 APIs.

Find trusted people on any topic, check if a source is credible, meet those who bridge divides.

Screen names against US export-control lists (BIS Entity List, DPL, MEU, ITAR, SDN). Paid via x402.

US federal contract and grant awards: who won, amounts, agencies (USAspending.gov). x402.

Find the right US tariff code for a product and the duty rate that actually governs it.

Reverse engineer USB gadgets: capture traffic, infer the protocol, generate a pyusb driver.

Read-only price book, seller screen, and financing illustration.

Freelancer time tracking: log time, run timers, manage clients and projects, make invoices.

WCAG contrast checks, HSL palettes with :root CSS, and search of 500+ free Uwarp UI tools.

How often AI assistants name a local Australian business, and which pages they read.

Validate LatAm tax, ID and bank numbers: CUIT, CPF, CNPJ, RFC, CURP, RUT, NIT, RUC, CLABE

Daily GoDaddy auction data: is a domain at auction, its appraisal, price and bid count.

Search curated AI resources: AI tools, MCP servers, prompts, skills, plugins, learning.

Find phone numbers that spell a word, toll free or local, with status, price and history.

Read and update your Vara lab experiments, runs, daily plans, references and materials.

7 packs: free read-only previews; paid snapshots/unsigned receipts. No advice or authority.

EU (VIES, 27+XI) VAT number validation for invoicing and onboarding. Paid per call via x402.

Live EU VAT number checks via VIES with company name/address, VAT formats and EU VAT rates