Insider Buy Signals
https://mcp.tradestarinsider.com/mcp ↗
Description
Filing-verified U.S. insider-buy signals from SEC Form 4: cluster buys and large-vs-holdings buys.
What our measurements say
Insider Buy Signals is a remote MCP server published at mcp.tradestarinsider.com. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 408 ms, placing it among the faster endpoints. It offers a narrow, focused set of 8 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names are descriptive and indicate specific use cases (e.g., 'insider_signals_by_ticker').
- Descriptions include contextual usage (e.g., 'Rule-2 insider-buy signals filed today').
- Parameters are well-defined with required/optional flags and types.
Weaknesses
- Some tools (e.g., 'federal_awards_recent') are unrelated to insider buys, causing potential confusion.
- Tool 'verify_insider_purchase' has 8 optional parameters, risking misuse due to ambiguity.
- Error handling is only explicitly mentioned in 'insider_filing_lookup' and 'verify_insider_purchase'.
federal_awards_recent— Irrelevant to insider buys, may mislead agent.verify_insider_purchase— Too many optional parameters; unclear prioritization.activist_stakes_recent— Description overly detailed, may obscure primary purpose.
Verdict
Event narrative
Risk: low
- 2026-09-12T15:21:42.024Z — era set to legacy · Legacy status confirmed, compliance at maximum
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 82ms → warm 98ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
insider_signals_todayRule-2 insider-buy signals filed today (SEC code P open-market purchases), ranked cluster-first. Each record carries its source filing_url.
insider_signals_by_tickerAll Rule-2 insider-buy signals for one ticker (case-insensitive). Each record carries its source filing_url.
tickerstringrequired
insider_signals_by_date_rangeRule-2 insider-buy signals filed within an inclusive ISO date range. Each record carries its source filing_url.
startstringrequiredendstringrequired
insider_cluster_buysRule-2 cluster buys only (>=2 insiders buying the same issuer in-window) — the highest-signal subset. Each record carries its source filing_url.
insider_filing_lookupThe single Rule-2 record for one SEC filing accession, with its filing_url. Returns an error if no gated filing matches the accession.
accessionstringrequired
federal_awards_recentRecently signed U.S. federal new awards from USAspending.gov, newest first. Optional min_amount (USD floor) and limit. Every award carries its source award_url; awards without a source link are dropped and never returned.
min_amountnumberlimitinteger
activist_stakes_recentRecent activist Schedule 13D / 13D-A filings on US-listed companies, newest first then by stated-intent strength (control/take-private > board/proxy > strategic/value, or none stated). Optional min_percent (percent-of-class floor), ticker, and limit. Every stake carries its source filing_url; filings without a source link are dropped.
min_percentnumbertickerstringlimitinteger
verify_insider_purchaseCheck a claim about an insider open-market buy (ticker/issuer, person, amount, timeframe) against the filed record. Returns status=confirmed with the source filing(s) + link; not_found; partial (same insider/company but value/date differs, itemised claimed-vs-filed); out_of_scope (sales/options/grants aren't covered); or out_of_coverage (outside the collected window). Every response states the coverage window checked. Rule-2: no estimates, no unlabelled partial matches — absence is reported as absence, never guessed.
tickerstringissuer_namestringpersonstringamount_usdnumbersharesnumberdatestringstartstringendstringtxn_typestring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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