Boolsai Grep — Claude Code MCP server: search signals
Boolsai Grep searches an archive of site scans with regular expressions. Use it when you need to find a signal that is not already indexed.
claude mcp add --transport http grep https://grep.boolsai.ai/mcpWhat Boolsai Grep does
The server runs parallel searches across a corpus of historical scans. Use grep_pattern or count_pattern to find matches or count them; sites_with_signal returns sites matching a signal, while list_signal_types lists the available signal categories. This can help locate inline-script signatures or account identifiers.
Boolsai Grep connects over MCP using HTTP at https://grep.boolsai.ai/mcp. In Claude Code, add it with the claude mcp add commands; the connection instructions do not call for an API key. The server searches Boolsai’s scan archive, so it does not perform a fresh live scan of a site.
What it helps with
- find sites containing a script signature
- count matches for a regular expression
- search historical scans for a pattern
- check which sites contain a given signal
Example prompts for the agent
- Find sites whose inline scripts contain
window._fs_org. - Count matches for a regular expression that identifies account IDs.
- List the available signal types, then find sites with a chosen signal.
How to install Boolsai Grep
Platform CLI: remote server
claude mcp add --transport http grep https://grep.boolsai.ai/mcpPlatform CLI: remote server
codex mcp add boolsai-grep --url https://grep.boolsai.ai/mcpConfig file
{
"mcpServers": {
"boolsai-grep": {
"url": "https://grep.boolsai.ai/mcp"
}
}
}Config file
{
"servers": {
"boolsai-grep": {
"type": "http",
"url": "https://grep.boolsai.ai/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http boolsai-grep https://grep.boolsai.ai/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about Boolsai Grep
How do I install Boolsai Grep in Claude Code?
Run these commands in order: claude mcp add --transport http grep https://grep.boolsai.ai/mcp, then claude mcp add --transport http boolsai-grep https://grep.boolsai.ai/mcp.
What does Boolsai Grep do?
It searches an archive of site scans using regular expressions, including patterns that are not part of a pre-indexed directory. Its tools can find matches, count them, and return sites with a signal.
Does Boolsai Grep work with Codex?
Yes. Add it to Codex with codex mcp add boolsai-grep --url https://grep.boolsai.ai/mcp.
