{"id":"90ddfc62-2044-4e55-a1df-5045f7e67a88","shortId":"gHd9b6","kind":"mcp","title":"Nostr Signer","tagline":"Approve Nostr signatures with your own browser signer without exposing a private key.","description":"Approve Nostr signatures with your own browser signer without exposing a private key.","tags":["com","frontiercrown","signer","nostr"],"capabilities":["mcp","transport-streamable-http","remote-server"],"categories":[],"synonyms":[],"warnings":[],"endpointUrl":"https://signer.frontiercrown.com/mcp","protocol":"mcp","transport":"streamable-http","auth":{"type":"mcp","details":{"transport":"streamable-http","remote_url":"https://signer.frontiercrown.com/mcp"}},"qualityScore":"0.450","qualityRationale":"deterministic score 0.45 from registry signals: · indexed on anthropic_mcp · remote streamable-http","verified":false,"liveness":"unknown","lastLivenessCheck":null,"agentReviews":{"count":0,"score_avg":null,"cost_usd_avg":null,"success_rate":null,"latency_p50_ms":null,"narrative_summary":null,"summary_updated_at":null},"enrichmentModel":"deterministic:mcp:v1","enrichmentVersion":1,"enrichedAt":"2026-09-18T08:24:56.124Z","embedding":null,"createdAt":"2026-09-11T06:21:26.920Z","updatedAt":"2026-09-18T08:24:56.124Z","lastSeenAt":"2026-09-18T08:24:56.124Z","tsv":"'approv':3,16 'browser':9,22 'expos':12,25 'key':15,28 'mcp' 'nostr':1,4,17 'privat':14,27 'remote-server' 'signatur':5,18 'signer':2,10,23 'transport-streamable-http' 'without':11,24","prices":[{"id":"5b5a8bbd-e488-4190-a593-7dff478a0063","listingId":"90ddfc62-2044-4e55-a1df-5045f7e67a88","amountUsd":"0","unit":"free","nativeCurrency":null,"nativeAmount":null,"chain":null,"payTo":null,"paymentMethod":"mcp-free","isPrimary":true,"details":{"transport":"streamable-http","remote_url":"https://signer.frontiercrown.com/mcp"},"createdAt":"2026-09-11T06:21:26.920Z"}],"sources":[{"listingId":"90ddfc62-2044-4e55-a1df-5045f7e67a88","source":"anthropic_mcp","sourceId":"com.frontiercrown.signer/nostr-signer:0.4.0","sourceUrl":"https://registry.modelcontextprotocol.io/v0/servers","isPrimary":true,"firstSeenAt":"2026-09-11T06:21:26.920Z","lastSeenAt":"2026-09-18T08:24:56.124Z"}],"details":{"listingId":"90ddfc62-2044-4e55-a1df-5045f7e67a88","quickStartSnippet":null,"exampleRequest":null,"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[],"useCases":[],"bestFor":[],"notFor":[],"kindDetails":{"source":"anthropic_mcp","version":"0.4.0","transport":"streamable-http","remote_url":"https://signer.frontiercrown.com/mcp","server_name":"com.frontiercrown.signer/nostr-signer","server_title":"Nostr Signer"},"updatedAt":"2026-09-18T08:24:56.124Z"}}