Agent Economy Index · MCP census · probed 2026-10-05 · JSON

com.signalaf/sigrank

Verdict: reachable, 16 tools, no description flags. Endpoint https://signalaf.com/api/mcp. Latency 13,981 ms.

Tools (32 fingerprinted)

tooldescription lengthflagsfirst seenlast seen
benchmark_me4182026-10-052026-10-05
compare_to_field3312026-10-052026-10-05
diagnose_cascade3912026-10-052026-10-05
field_anomaly3522026-10-052026-10-05
get_leaderboard1302026-10-052026-10-05
get_operator1192026-10-052026-10-05
get_sigrank_standard_record2562026-10-052026-10-05
operator_gap3502026-10-052026-10-05
operator_signature3492026-10-052026-10-05
rank_if4682026-10-052026-10-05
rank_paste1682026-10-052026-10-05
rank_windows2672026-10-052026-10-05
self_improve4142026-10-052026-10-05
simulate_change3522026-10-052026-10-05
suggest_improvements4402026-10-052026-10-05
who_operates_like_me4032026-10-052026-10-05
benchmark_me4182026-09-292026-10-02
compare_to_field3312026-09-292026-10-02
diagnose_cascade3912026-09-292026-10-02
field_anomaly3522026-09-292026-10-02
get_leaderboard1302026-09-292026-10-02
get_operator1192026-09-292026-10-02
get_sigrank_standard_record2712026-09-292026-10-02
operator_gap3502026-09-292026-10-02
operator_signature3492026-09-292026-10-02
rank_if4682026-09-292026-10-02
rank_paste1682026-09-292026-10-02
rank_windows2672026-09-292026-10-02
self_improve4142026-09-292026-10-02
simulate_change3522026-09-292026-10-02
suggest_improvements4402026-09-292026-10-02
who_operates_like_me4032026-09-292026-10-02

Tool changes (16)

whentoolkind
2026-10-05 23:21operator_signaturemutated
2026-10-05 23:21compare_to_fieldmutated
2026-10-05 23:21who_operates_like_memutated
2026-10-05 23:21field_anomalymutated
2026-10-05 23:21operator_gapmutated
2026-10-05 23:21rank_ifmutated
2026-10-05 23:21benchmark_memutated
2026-10-05 23:21rank_windowsmutated
2026-10-05 23:21self_improvemutated
2026-10-05 23:21suggest_improvementsmutated
2026-10-05 23:21diagnose_cascademutated
2026-10-05 23:21simulate_changemutated
2026-10-05 23:21get_operatormutated
2026-10-05 23:21get_leaderboardmutated
2026-10-05 23:21get_sigrank_standard_recordmutated
2026-10-05 23:21rank_pastemutated

Probe history

2026-10-05 ok (16 tools) · 2026-10-04 payment_required · 2026-10-03 payment_required · 2026-10-02 ok (16 tools) · 2026-10-01 timeout · 2026-09-30 ok (16 tools) · 2026-09-29 ok (16 tools)

Depend on this server? Watch it with ToolDrift, $29/month: an alert within six hours when it changes a tool or trips a detector. Flags here are pattern matches on tool descriptions, not verdicts; read the description before deciding.
Run this server? Show today's check on your README or site with a badge that refreshes daily: badge
<a href="https://index.agentexchange.work/mcp-server/com.signalaf%2Fsigrank"><img src="https://index.agentexchange.work/badge/mcp/com.signalaf%2Fsigrank.svg" alt="MCP server check by agentexchange.work"></a>
Claim this server — prove you operate signalaf.com and this page gets a "Claimed by the operator" line, the badge gets a CLAIMED prefix, and you get a JSON webhook alert when a daily probe records a tool change or more flagged descriptions than the day before (at most one alert per 6 hours). No account, no email, nothing to install.
  1. Put a text file at https://signalaf.com/.well-known/agentexchange-claim.txt whose entire content is exactly com.signalaf/sigrank.
  2. Submit this form. We fetch that URL once (7-second timeout, User-Agent agentexchange-index-claim) and compare the trimmed body with the registry name.

Alert payload: {event, server, day, drift:[{tool, kind, detected_at}], findings, previous_findings, page_url, badge_url}. Public list of claims (names and hosts only): /v1/claims.json.

Run this server? MCP servers process users' data and often accept content; the laws that follow are a 45-day privacy request process, an opt-out path, and for hosted content a takedown or notice-and-action process. Check your site free or get a hosted desk.

Pay-per-call tools and data for agents, no key: store gateway (300+ routes, one origin, Coinbase-settled) · AI media and inference from $0.001 · the x402 directory · sector gap lists (card or USDC) · MCP integrity report.