ByteAsk is an MCP server that provides Claude Code, Codex, Cursor, and other MCP clients with exact, page-cited facts from embedded and firmware reference documentation.

What types of documentation does ByteAsk support?

ByteAsk supports embedded and firmware reference docs, including register maps and SCPI commands.

How does ByteAsk cite information?

ByteAsk returns page-cited facts, so users can trace the exact source of each piece of information.

Which clients can use ByteAsk?

ByteAsk works with Claude Code, Codex, Cursor, and any other MCP-compatible clients.

Is ByteAsk free to use?

Pricing details are not specified in the description; please visit the official ByteAsk website for current pricing information.

ByteAsk - AI Programming Assistant tools - Free trial, pricing intro, performance review, official site access and online experience

What is ByteAsk?

ByteAsk is an MCP (Model Context Protocol) server that gives AI coding agents—like Claude Code, Cursor, and any MCP client—exact, page-cited facts from embedded and firmware reference documentation. Instead of guessing register values or spec details, the agent receives precise citations (e.g., "Armv7-M ARM · p.621") or an honest "no match." It covers primary sources such as IEEE 2030.5, Modbus, CAN/ISO-TP, MQTT, SCPI, Arm Cortex-M, and ENA G98/G99 datasheets, including register maps.

Application scenarios

Embedded firmware development
Get accurate register map values and reset values for Cortex-M SysTick control registers without guessing.
Industrial protocol debugging
Look up Modbus function codes (e.g., 0x10 for writing multiple registers) and exception codes (e.g., 02 for illegal data address) with exact protocol specification citations.
SCPI command reference
Query SCPI command syntax and parameters from official documentation.
CAN/ISO-TP troubleshooting
Retrieve exact frame formats and timing parameters from the spec.
Energy compliance checks
Access ENA G98/G99 datasheet requirements for grid-tied inverters.
Private parts library management
Search internal proprietary datasheets alongside public references for custom or NDA-protected components.

Core Features

Page-cited answers
Every response includes the exact source document and page number (e.g., "Modbus Application Protocol v1.1b3 · p.30"), eliminating unsourced guesses.
Primary source coverage
Pre-loaded with IEEE 2030.5, Modbus, CAN/ISO-TP, MQTT, SCPI, Arm Cortex-M, and ENA G98/G99 datasheets and register maps.
Private library support
Upload proprietary datasheets for custom parts, in-house designs, or NDA-protected components; your AI searches both public and private libraries together.
Org-scoped access
Private parts are visible only to your team’s API tokens, with no data leaving your organization.
Custom metadata
Add internal MPNs, AVLs, and design notes alongside extracted specs for your private library.
Team-wide library
Every engineer gets the same approved parts, eliminating shared drive chaos.
No signup required
Connect your agent by pasting a single prompt or URL—no key, no token, no signup needed.
Works with multiple clients
Compatible with Claude Code, Cursor, VS Code, Windsurf, Cline, Kiro, and any MCP client.

Target users

This tool is built for embedded firmware engineers, hardware engineers, and technical teams working with microcontrollers, industrial protocols, and energy compliance standards. It also serves engineering managers who need to maintain a single, approved library of internal component specs for their entire team.

How to use ByteAsk?

For the Claude app (claude.ai or desktop), add ByteAsk as a custom connector: in a new chat, click + → Add connector → Add custom connector, then paste the URL https://mcp.byteask.ai/mcp. No key or signup is required. For other agents like Claude Code or Cursor, use the command claude mcp add --transport http byteask-embedded-docs https://mcp.byteask.ai/mcp or follow the manual steps on the official site.

Pricing and free trial

The website does not list any pricing or free trial information. Pricing is omitted from this review.

Effect review

ByteAsk solves a real pain point for embedded developers: AI coding agents that confidently hallucinate register values or protocol details. The page-cited answers and primary-source coverage provide a reliable reference desk that eliminates guesswork. The private library feature is particularly valuable for teams working with proprietary or NDA-protected components, ensuring consistency across engineers. While the tool is clearly focused on embedded and firmware use cases, its MCP-based architecture makes it trivially easy to integrate into existing workflows. For any engineer tired of chasing datasheet PDFs or correcting AI hallucinations, ByteAsk delivers exactly what it promises—no fluff, no signup friction.

ByteAsk