Agent Economy Index · MCP census · probed 2026-09-30 · JSON

com.frontiercrown.signer/nostr-signer

Verdict: reachable, 17 tools, no description flags. Endpoint https://signer.frontiercrown.com/mcp. Latency 14,240 ms.

Tools (17 fingerprinted)

tooldescription lengthflagsfirst seenlast seen
approve_grynvault_browser_handoff2262026-09-292026-09-30
begin_nostrconnect_pairing1192026-09-292026-09-30
connect_bunker1622026-09-292026-09-30
create_grynvault_nip05_invoice1982026-09-292026-09-30
create_grynvault_supporter_invoice1932026-09-292026-09-30
disconnect_signer602026-09-292026-09-30
get_grynvault_account_dashboard1822026-09-292026-09-30
get_public_key612026-09-292026-09-30
get_setup_url1022026-09-292026-09-30
get_signer_status692026-09-292026-09-30
prepare_event1522026-09-292026-09-30
prepare_grynvault_nip05_invoice1802026-09-292026-09-30
prepare_grynvault_supporter_invoice1982026-09-292026-09-30
prepare_note942026-09-292026-09-30
publish_event1042026-09-292026-09-30
query_events822026-09-292026-09-30
sign_event1332026-09-292026-09-30

Tool changes (0)

whentoolkind
none yet

Probe history

2026-09-30 ok (17 tools) · 2026-09-29 ok (17 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.frontiercrown.signer%2Fnostr-signer"><img src="https://index.agentexchange.work/badge/mcp/com.frontiercrown.signer%2Fnostr-signer.svg" alt="MCP server check by agentexchange.work"></a>
Claim this server — prove you operate signer.frontiercrown.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://signer.frontiercrown.com/.well-known/agentexchange-claim.txt whose entire content is exactly com.frontiercrown.signer/nostr-signer.
  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.