Signal8 is answering right now. Last checked 8 min ago. 128 installs a week from npm. It exposes 101 tools. Last commit 31 Jul 2026.
SEC filings, dilution, insider & institutional ownership, and political-trade data for AI agents.
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 21 August 2026. No other catalogue keeps this.
We read the source, 23 h ago · tools taken from the live server · rules 3dff92dd89df
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
пакет @signal8ai/mcp ссылается на signal8ai/signal8
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.
claude mcp add mcp --transport http https://mcp.signal8.ai/mcp
{
"mcpServers": {
"mcp": {
"url": "https://mcp.signal8.ai/mcp"
}
}
}
[mcp_servers.mcp]
url = "https://mcp.signal8.ai/mcp"
{
"mcpServers": {
"mcp": {
"url": "https://mcp.signal8.ai/mcp"
}
}
}
{
"mcpServers": {
"mcp": {
"url": "https://mcp.signal8.ai/mcp"
}
}
}
This one needs environment variables set before it will start:
SIGNAL8_API_KEY (Signal8 API key (starts with sk_live_ or sk_test_). Create one at https://signal8.ai/settings/api-keys.).
The author declared them in the registry entry; get the values from the project itself.
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
get_politician_activity
get_politician_committees
get_politician_detail
get_politician_donor_summary
get_politician_donors
get_politician_late_filers
get_politician_pnl
get_politician_recent_trades
get_politician_roles
get_politician_transactions
get_politician_votes
get_institution_activity
get_institution_derivatives
get_institution_detail
get_institution_filings
get_institution_holdings
get_institution_portfolio_analytics
get_institution_position_changes
get_institution_top_aum
get_dilution_coverage
get_dilution_history
get_dilution_instruments
get_dilution_performance
get_dilution_risk
get_dilution_snapshot
get_insider_cluster_buys
get_insider_cross_company
get_insider_positions
get_insider_positions_by_ticker
get_insider_transactions
get_analyst_consensus
get_analyst_coverage
get_analyst_estimates
get_analyst_grades
get_filing_calendar
get_filing_document
get_filing_exhibits
search_filing_text
screen_companies
screen_must_raise
screen_sec_filings
screen_sec_filings_performance
get_cash_history
get_cash_position
get_cash_runway_calendar
get_institutions
get_institutions_leaderboards
search_institutions
get_market_breadth
get_market_metrics
get_market_news
get_policy_events
get_policy_trade_leaderboard
get_policy_trade_overlap
get_politicians
get_politicians_most_active
get_politicians_pnl_leaderboard
get_recent_congressional_votes
get_recent_material_filings
get_recent_uplistings
get_clinical_trials
search_clinical_trials
get_earnings
get_earnings_calendar
get_float
get_float_history
get_premarket_scan_history
get_premarket_scanner
get_accumulation_snapshot
get_baby_shelf_capacity
search_companies
get_company_profile
get_compliance
get_donor_aggregates
get_economic_calendar
get_etf_bundle
get_executives
get_exhibit_content
get_financials
get_historical_prices
get_insiders
get_intraday_bars
get_legislative_calendar
lookup_accession_number
get_news
get_ownership
get_political_sector_rotation
get_post_earnings_movers
get_price_target
get_quote
get_recently_sponsored_bills
get_rvol_history
search_sec_filings
get_senate_trades_by_ticker
get_short_interest
get_split_history
get_stock_price_change
get_top_movers
get_trading_halts
get_upcoming_reverse_splits
get_volume_profile
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://mcp.signal8.ai/mcp | streamable-http | answering | 195 ms | 8 min ago |
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Answers built from our own checks of this server.