CortexScout (cortex-scout) — Search and Web Extraction Engine for AI Agents

CortexScout is the Deep Research & Web Extraction module within the Cortex-Works ecosystem.

Designed for agent workloads that require token-efficient web retrieval, reliable anti-bot handling, and optional Human-in-the-Loop (HITL) fallback.

Overview

CortexScout provides a single, self-hostable Rust binary that exposes search and extraction capabilities over MCP (stdio) and an optional HTTP server. Output formats are structured and optimized for downstream LLM use.

It is built to handle the practical failure modes of web retrieval (rate limits, bot challenges, JavaScript-heavy pages) through progressive fallbacks: native retrieval → Chromium CDP rendering → HITL workflows.

Tools (Capability Roster)

Area	MCP Tools / Capabilities
Search	`web_search`, `web_search_json` (parallel meta-search + dedup/scoring)
Fetch	`web_fetch`, `web_fetch_batch` (token-efficient clean output, optional semantic filtering)
Crawl	`web_crawl` (bounded discovery for doc sites / sub-pages)
Extraction	`extract_fields`, `fetch_then_extract` (schema-driven extraction)
Anti-bot handling	CDP rendering, proxy rotation, block-aware retries
HITL	`visual_scout` (screenshot for gate confirmation), `human_auth_session` (authenticated fetch with persisted sessions), `non_robot_search` (last resort rendering)
Memory	`memory_search` (LanceDB-backed research history)
Deep research	`deep_research` (multi-hop search + scrape + synthesis via OpenAI-compatible APIs)

Ecosystem Integration

While CortexScout runs as a standalone tool today, it is designed to integrate with CortexDB and CortexStudio for multi-agent scaling, shared retrieval artifacts, and centralized governance.

Anti-Bot Efficacy & Validation

This repository includes captured evidence artifacts that validate extraction and HITL flows against representative protected targets.

Target	Protection	Evidence	Notes
LinkedIn	Cloudflare + Auth	JSON · Snippet	Auth-gated listings extraction
Ticketmaster	Cloudflare Turnstile	JSON · Snippet	Challenge-handled extraction
Airbnb	DataDome	JSON · Snippet	Large result sets under bot controls
Upwork	reCAPTCHA	JSON · Snippet	Protected listings retrieval
Amazon	AWS Shield	JSON · Snippet	Search result extraction
nowsecure.nl	Cloudflare	JSON	Manual return path validated

See proof/README.md for methodology and raw outputs.

Quick Start

Option A — Prebuilt binaries

Download the latest release assets from GitHub Releases and run one of:

cortex-scout-mcp — MCP stdio server (recommended for VS Code / Cursor / Claude Desktop)
cortex-scout — optional HTTP server (default port 5000; override via --port, PORT, or CORTEX_SCOUT_PORT)

Health check (HTTP server):

./cortex-scout --port 5000
curl http://localhost:5000/health

Option B — Build from source

git clone https://github.com/cortex-works/cortex-scout.git
cd cortex-scout

cd mcp-server
cargo build --release --all-features

MCP Integration (VS Code / Cursor / Claude Desktop)

Add a server entry to your MCP config. Example for VS Code (stdio transport):

{
  "servers": {
    "cortex-scout": {
      "type": "stdio",
      "command": "env",
      "args": [
        "RUST_LOG=info",
        "SEARCH_ENGINES=google,bing,duckduckgo,brave",
        "LANCEDB_URI=/YOUR_PATH/cortex-scout/lancedb",
        "HTTP_TIMEOUT_SECS=30",
        "MAX_CONTENT_CHARS=10000",
        "IP_LIST_PATH=/YOUR_PATH/cortex-scout/ip.txt",
        "PROXY_SOURCE_PATH=/YOUR_PATH/cortex-scout/proxy_source.json",
        "/YOUR_PATH/cortex-scout/mcp-server/target/release/cortex-scout-mcp"
      ]
    }
  }
}

Multi-IDE guide: docs/IDE_SETUP.md

Configuration (cortex-scout.json)

Create cortex-scout.json in the same directory as the binary (or repository root). All fields are optional; environment variables act as fallback.

{
  "deep_research": {
    "enabled": true,
    "llm_base_url": "http://localhost:1234/v1",
    "llm_api_key": "",
    "llm_model": "lfm2-2.6b",
    "synthesis_enabled": true,
    "synthesis_max_sources": 3,
    "synthesis_max_chars_per_source": 800,
    "synthesis_max_tokens": 1024
  }
}

Key Environment Variables

Variable	Default	Description
`CHROME_EXECUTABLE`	auto-detected	Override path to Chromium/Chrome/Brave
`SEARCH_ENGINES`	`google,bing,duckduckgo,brave`	Active engines (comma-separated)
`SEARCH_MAX_RESULTS_PER_ENGINE`	`10`	Results per engine before merge
`SEARCH_CDP_FALLBACK`	auto	Retry blocked retrieval via native Chromium CDP
`LANCEDB_URI`	—	Path for semantic memory (optional)
`CORTEX_SCOUT_MEMORY_DISABLED`	`0`	Set `1` to disable memory features
`HTTP_TIMEOUT_SECS`	`30`	Per-request timeout
`OUTBOUND_LIMIT`	`32`	Max concurrent outbound connections
`MAX_CONTENT_CHARS`	`10000`	Max chars per scraped document
`IP_LIST_PATH`	—	Proxy IP list path
`PROXY_SOURCE_PATH`	—	Proxy source definition path
`DEEP_RESEARCH_ENABLED`	`1`	Disable the `deep_research` tool at runtime by setting `0`
`OPENAI_API_KEY`	—	API key for synthesis (omit for key-less local endpoints)
`OPENAI_BASE_URL`	`https://api.openai.com/v1`	OpenAI-compatible endpoint (Ollama/LM Studio supported)
`DEEP_RESEARCH_LLM_MODEL`	`gpt-4o-mini`	Model name (OpenAI-compatible)
`DEEP_RESEARCH_SYNTHESIS_MAX_TOKENS`	`1024`	Response token budget for synthesis

Agent Best Practices

Recommended operational flow:

Use memory_search before new research runs to avoid re-fetching.
Prefer web_search_json for initial discovery (search + content summaries).
Use web_fetch for known URLs; use output_format="clean_json" and set query + strict_relevance=true for token efficiency.
On 403/429/rate-limit: call proxy_control with action:"grab", then retry with use_proxy:true.
For auth walls: visual_scout to confirm gating, then human_auth_session to complete login and persist sessions under ~/.cortex-scout/sessions/.

Full agent rules: /.github/copilot-instructions.md

Versioning and Changelog

See CHANGELOG.md.

License

MIT. See LICENSE.

CortexScout (cortex-scout) — Search and Web Extraction Engine for AI Agents