Free tier — company & market lookup, 200 calls/day

Cybersecurity intelligence
for your AI workflows

Connect Claude, Cursor, or any MCP client to The Signal. Query companies, investors, funding rounds, and M&A activity with natural language.

Get started View Plans →
4,000+
Cybersecurity companies
6,000+
Investors tracked
8,000+
Funding rounds
1,400+
M&A deals

How it works

Three steps to cybersecurity market intelligence in your AI workflows.

1

Sign up

Create your free Signal account in 30 seconds — no credit card required.

2

Connect

Add The Signal's MCP server URL to Claude, Cursor, or any MCP-compatible client.

3

Ask

Authenticate via your browser, then ask questions in natural language.

Connect the MCP

Before you begin

You need a free Signal account

The MCP server authenticates against your Signal account. Create one first — takes 30 seconds, no credit card — then come back to connect your client.

Create free account I already have one
1

In Claude or Claude Desktop, open Settings → Connectors → Add custom connector.

2

Set the name to "The Signal" and paste this connector URL:

https://mcp.returnonsecurity.com/mcp
3

Sign in with your Signal account when Claude redirects you. Open a new chat — The Signal's tools will appear in the connector menu.

1

Run this in your terminal:

claude mcp add signal-mcp https://mcp.returnonsecurity.com/mcp
2

Claude Code opens your browser. Sign in with your Signal account to authorize.

3

Confirm the server is connected:

claude mcp list
1

In Cursor, open Settings → MCP → Add Server.

2

Paste this server URL:

https://mcp.returnonsecurity.com/mcp
3

Cursor opens a browser window — sign in with your Signal account to authorize. The server will show as Connected in Settings → MCP.

1

Run these in your terminal:

codex mcp add signal-mcp https://mcp.returnonsecurity.com/mcp
codex mcp login signal-mcp
2

Codex opens your browser. Sign in with your Signal account to authorize.

1

Add a server with this URL in your MCP client's config:

https://mcp.returnonsecurity.com/mcp
2

Use these transport settings:

Transport: Streamable HTTP

Auth: OAuth 2.1 (handled by your MCP client)

3

On first use your client opens a browser for the OAuth flow — sign in with your Signal account.

Free covers company lookup, market overview, and top investors — 200 calls/day, no credit card. Pro, Team, Enterprise add investor deep-dives, graph traversal, forecasting, and consolidation signals — 1,000–10,000 calls/day. View Plans →

Example prompts

Ask these questions in natural language — your AI tool translates them into the right tool calls.

Screening
"Which Series B+ cloud security companies in Europe raised funding in the last 12 months?"
Market Overview
"Give me a 1-quarter overview of cybersecurity funding and M&A."
Company Deep-Dive
"Enrich Wiz with funding history, investor network, and growth signals."
Relationship
"How is Sequoia connected to CrowdStrike?"
Investor Analysis
"Which PE firms are most active in identity security?"
Likely Acquirers
"Who are the most likely acquirers for a CSPM company like Wiz?"

Available tools

From quick lookups to graph traversal and funding forecasts. Free covers company lookup and market overview; Pro adds investor deep-dives, graph traversal, forecasting, and consolidation signals.

search_companies FREE
Find cybersecurity companies by category, product type, funding stage, geography, status, and basic funding. Free tier returns top 10 matches; Pro unlocks valuation, continent, founded-year, and funding-type filters.
enrich_company FREE
Company profile with funding history. Free tier returns basic profile + last 3 rounds; Pro adds competitive position, investor network, growth signals, and full acquisition history.
get_market_overview FREE
Market summary: funding totals, top companies, top investors, and recent unicorns. Free tier: top-5 lists, last-quarter window. Pro: top-10 across all timeframes.
get_category_momentum FREE
Category momentum rankings. Free tier returns top 10 categories; Pro returns full ranked list with drill-down filters.
get_investor_centrality FREE
Most connected investors by graph centrality. Free tier: top 10. Pro: top 100.
get_investor_tiers FREE
Investor tier classifications. Free tier: Tier 1 only. Pro: all three tiers with full deal metrics.
get_data_status FREE
Data freshness and pipeline status. Shows last sync timestamps, node/edge counts, and cache version.
list_categories FREE
Browse all 210 product categories grouped by domain. Discover valid filter values for other tools.
list_countries FREE
Browse all countries and continents with cybersecurity activity. Discover valid geography filters.
search_investors PRO
Find investors by sector focus, deal activity, geography, and type (VC, PE, Corporate).
get_investor_portfolio PRO
Full deal history for a specific investor with company, amount, stage, date, and category per round.
get_funding_rounds PRO
Funding rounds with filters for company, category, country, stage, investor, timeframe, and amount. Supports count_only and group_by for aggregation.
get_ma_activity PRO
M&A deals by category, geography, acquirer, acquirer type (strategic vs PE), year, timeframe, and deal size. Supports count_only and group_by for aggregation.
find_connections PRO
Graph traversal to find connections between companies and investors through shared relationships.
suggest_acquirers PRO
Heuristic acquirer recommendations based on category overlap, acquisition history, and graph adjacency.
search_growth_signals PRO
Search companies by multi-dimensional growth score (0-100). Combines funding velocity, investor quality, category momentum, and more.
get_funding_timeseries PRO
Bucket cybersecurity funding into monthly, quarterly, or yearly periods in a single call. Returns count, total $, and average per bucket.
compare_periods PRO
Compare funding between two periods (YoY, QoQ, or arbitrary windows). Returns counts, totals, averages, and % deltas in one call.
forecast_funding PRO
Project cybersecurity funding for the next 1–4 quarters or remainder of year using linear trend + quarterly seasonal multipliers.
get_valuation_trends PRO
Post-money valuation percentiles (p25/p50/p75/p90) bucketed by quarter or year. Reports coverage so sparse buckets are easy to spot.
get_round_velocity PRO
Days between successive funding rounds per company or aggregated by category, stage, or country. Shorter gaps signal momentum.
category_consolidation_signals PRO
Detect M&A consolidation by category: acquisitions, total deal value, unique acquirers, and surviving-company count with a 0–100 score.

Troubleshooting

Verify your connection
Your MCP client should list The Signal's tools after sign-in (in Claude's connector menu, Cursor's MCP settings, or via claude mcp list in Claude Code). If you see them, you're connected. Access tokens last 24 hours.
Tools not loading?
Open a fresh client session. Your MCP client will automatically authenticate via your browser on first use.

Ready to connect?

Start free — screen companies and explore the cybersecurity market, 200 calls/day, no credit card. Upgrade for deep intelligence, graph traversal, and forecasting with higher limits.

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