Official MCP RegistryListed
Nostr Signer
Approve Nostr signatures with your own browser signer without exposing a private key.
First seen 2 Oct 2026. Evidence as of 10 Oct 2026.
17
Tools
From an anonymous probe
1
Source listings
Each with its own history
0
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| approve_grynvault_browser_handoff | Sign a short-lived, read-only Grynvault account handoff code so the browser tab that created it can receive its own dashboard. This does not create an invoice, publish a Nostr event, change settlement, or grant wallet custody. | Changes data |
| begin_nostrconnect_pairing | Advanced fallback: create a nostrconnect:// URI for the user to scan or open in a remote signer. Never accepts an nsec. | Changes data |
| connect_bunker | Connect a bunker:// URI only when the user knowingly supplied it. Prefer the local setup page so connection secrets are not placed in chat. Never accepts an nsec. | Changes data |
| create_grynvault_nip05_invoice | After separate explicit user confirmation, sign the prepared authorization and create exactly one pending 2,000-sat [email protected] invoice. Does not pay, settle, activate, or prove identity. | Changes data |
| create_grynvault_supporter_invoice | After separate explicit user confirmation, sign the prepared authorization and create exactly one pending Grynvault supporter invoice. Does not pay it and never treats a redirect as settlement. | Changes data |
| disconnect_signer | Forget the in-memory signer session and all prepared events. | Destructive |
| get_grynvault_account_dashboard | Read the connected Nostr identity's Grynvault supporter, payment, and NIP-05 dashboard using a short-lived signed authorization. This does not create an invoice or change settlement. | Read-only |
| get_public_key | Return the public key exposed by the currently paired signer. | Read-only |
| get_setup_url | Return the loopback-only page used to connect a NIP-07 browser extension or an advanced NIP-46 signer. | Read-only |
| get_signer_status | Check whether a user-controlled NIP-07 or NIP-46 signer is connected. | Read-only |
| prepare_event | Validate and bind an exact unsigned Nostr event for user review. This does not sign or publish. Show the user every field before requesting a signature. | Read-only |
| prepare_grynvault_nip05_invoice | Check and normalize a [email protected] identifier, then prepare its exact 2,000-sat invoice authorization. Does not sign, reserve the name, create, pay, or settle an invoice. | Read-only |
| prepare_grynvault_supporter_invoice | Prepare an exact, short-lived signed-authorization request for a one-time donation of 21 to 1,000,000 sats or the fixed 2,100-sat 30-day membership. Does not sign, create, pay, or settle an invoice. | Read-only |
| prepare_note | Prepare and bind an exact unsigned kind:1 note for user review. This does not sign or publish. | Read-only |
| publish_event | Publish a previously verified signed event to configured relays. Requires separate explicit user intent. | Destructive |
| query_events | Read a bounded set of verified public profile or note events from selected relays. | Read-only |
| sign_event | Ask the paired signer to approve and sign the exact event bound to a fresh intent. Requires explicit user intent and never publishes. | Changes data |
Change history
No changes since the first observation. The first snapshot is the baseline.
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | com.frontiercrown.signer/nostr-signer | 2 Oct 2026 | 10 Oct 2026 | 1 |