Steel Brain is a remote MCP server that gives an AI agent 3 tools, among them cert_guide, grade_lookup, substitution_check. It answers at https://api.steelbrain.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 3 of 4 times since 16 September 2026; the last check, on 21 October 2026, succeeded.
Trade-verified steel grade properties, substitution verdicts, and mill-cert guidance for AI agents.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
cert_guide | Which mill cert type applies for a grade + use case (e.g. EH36 shipbuilding), and what fields to check on the cert. Inputs: grade, use_case |
grade_lookup | Look up a steel grade: properties, chemistry, forms, applications, weldability. Aliases accepted (e.g. 4140 = 42CrMo4 = SCM440). Inputs: grade |
substitution_check | Check if one steel grade can substitute another for a given application (machined / welded-structural / pressure). Returns verdict + reasoning from verified trade rules. Inputs: from_grade, to_grade, application |
Every block below points at https://api.steelbrain.dev/mcp. Pick your client and copy.
claude mcp add --transport http steel-brain https://api.steelbrain.dev/mcp
{
"mcpServers": {
"steel-brain": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.steelbrain.dev/mcp"]
}
}
}{
"mcpServers": {
"steel-brain": {
"url": "https://api.steelbrain.dev/mcp"
}
}
}{
"servers": {
"steel-brain": {
"type": "http",
"url": "https://api.steelbrain.dev/mcp"
}
}
}{
"context_servers": {
"steel-brain": {
"url": "https://api.steelbrain.dev/mcp"
}
}
}{
"mcpServers": {
"steel-brain": {
"serverUrl": "https://api.steelbrain.dev/mcp"
}
}
}{
"mcpServers": {
"steel-brain": {
"url": "https://api.steelbrain.dev/mcp"
}
}
}name: Steel Brain
version: 0.0.1
schema: v1
mcpServers:
- name: Steel Brain
type: streamable-http
url: https://api.steelbrain.dev/mcp{
"mcpServers": {
"steel-brain": {
"httpUrl": "https://api.steelbrain.dev/mcp"
}
}
}{
"mcpServers": {
"steel-brain": {
"type": "http",
"url": "https://api.steelbrain.dev/mcp"
}
}
}{
"mcpServers": {
"steel-brain": {
"url": "https://api.steelbrain.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.steelbrain.dev%2Fmcp&type=streamable_http&id=steel-brain&name=Steel%20Brain
It answered our last check on 21 October 2026 in 540 ms. Over 4 checks since 16 September 2026 it answered 3. Status here comes from Neuronto's own probes, not from the publisher.
3, as returned by the server's own tools/list on 26 September 2026: cert_guide, grade_lookup, substitution_check.
It answered our last check on 21 October 2026 in 540 ms. Over 4 checks since 16 September 2026 it answered 3.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.steelbrain.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.dryow1. Endpoint host: api.steelbrain.dev. ARD identifier: urn:air:io.github.dryow1:mcp:steel-brain.
First indexed 16 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.