Should my agent depend on the MCP server ai.signal8/mcp?

Verdict: allow — rich-slow-solo — safe to depend on As of 2026-08-15T11:28:18Z: a dated observation with receipts, not a warranty.

Signal8

ai.signal8/mcp

SEC filings, dilution, insider & institutional ownership, and political-trade data for AI agents.

— the operator's own registry description reported

Publisher ai.signal8 · first seen 2026-08-12 · endpoint https://mcp.signal8.ai/mcp

allow

verdict

rich-slow-solo

cluster

ok_tools

answers

tools served

Dependency rating derived

allow — rich-slow-solo — safe to depend on

Cluster rich-slow-solo · distinctiveness 0.832 (unusual). Every figure is a percentile or class within the 11,094-server census — see the whole spectrum.

Reach — can an agent get to it?

answersalive_tools

latency675 ms

vs populationslow

protocolcurrent

authopen

Use — can it use it?

tools92

vs populationhigh

capabilities3

harnessA

Trust — can it rely on it?

identitysolo

servers on its host1

verifiabilityunassessed

duplicate inventoryno

drift events0

answers trueno primary

🔏 Signed receipt rr_684add50e345ff96e43473e2 · ed25519 · key rs-rcpt-2026-08 — this rating is tamper-evident; an agent gets the full signature from check_server and can verify it against the published key.

Tools last seen

get_accumulation_snapshot get_analyst_consensus get_analyst_coverage get_analyst_estimates get_analyst_grades get_cash_history get_cash_position get_cash_runway_calendar get_clinical_trials get_company_profile get_compliance get_donor_aggregates get_earnings get_earnings_calendar get_economic_calendar get_etf_bundle get_executives get_exhibit_content get_filing_calendar get_filing_document get_filing_exhibits get_financials get_float get_float_history get_historical_prices get_insider_cluster_buys get_insider_cross_company get_insider_positions get_insider_positions_by_ticker get_insider_transactions get_insiders 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_institutions get_institutions_leaderboards get_intraday_bars get_legislative_calendar get_market_breadth get_market_metrics get_market_news get_news get_ownership get_policy_events get_policy_trade_leaderboard get_policy_trade_overlap get_political_sector_rotation 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_politicians get_politicians_most_active get_politicians_pnl_leaderboard get_post_earnings_movers get_premarket_scan_history get_premarket_scanner get_price_target get_quote get_recent_congressional_votes get_recent_material_filings get_recently_sponsored_bills get_rvol_history get_senate_trades_by_ticker get_short_interest get_split_history get_stock_price_change get_top_movers get_trading_halts get_volume_profile lookup_accession_number screen_companies screen_must_raise screen_sec_filings screen_sec_filings_performance search_clinical_trials search_companies search_filing_text search_institutions search_sec_filings

Harness readiness observed

Can an agent's harness pick this tool and call it correctly? Graded on the three things an agent reads — name, description, typed parameters. Band A — an agent can pick and call these reliably.

legibility check	tools passing	ok
name is clear & specific	92/92	✓
has a description	92/92	✓
description is substantive	92/92	✓
parameters are typed	92/92	✓
parameters are described	92/92	✓

92 of 92 tools graded · 92 with a captured input schema. RS-008, Tier-1 — no domain knowledge, applies to any tool. “Alive” is not the same as “usable”.

Truth checks observed

Not in the Tier-2 trade lane, or not yet checked. Tier-2 re-derives a server's answers against published primary sources — see truth checks.

Protocol conformance observed

2025-06-18

protocol version

—

session model

0.15.0

server version signal8-mcp

Capabilities: prompts resources tools

Drift

No confirmed drift on record. Baseline set 2026-08-14; changes appear here after human review.

History observed

Every probe we made, oldest → newest (2 shown, 2026-08-12 → 2026-08-14). Green answered · amber answered-but-walled · red no useful answer. A gap in our cadence is a gap in coverage, not evidence about the server.

changelog (1 events)

date	type	what changed
2026-08-12	outcome	first probe: ok_tools

raw probe records

probed (UTC)	outcome	http	ms	protocol
2026-08-14T19:57:39Z	ok_tools	200	675	2025-06-18
2026-08-12T05:32:56Z	ok_tools	200	242	2025-06-18

Watch or embed this verdict

Operators: put the live verdict in your README — it updates with every census, links back here, and is a dated observation, never a warranty:

[![Robin Saige verdict](https://robinsaige.com/badge/ai.signal8/mcp.svg)](https://robinsaige.com/s/ai.signal8/mcp)

Depend on it? Subscribe to its change feed — outcome changes and confirmed drift, no account needed. Building on it? The full dossier as JSON — verdict, rating, truth checks, history — stable enough to gate CI on.

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