From 1df7b1b37c1bea8011fe937451213aef113a5611 Mon Sep 17 00:00:00 2001
From: Jon Staab <shtaab@gmail.com>
Date: Wed, 25 Feb 2026 14:08:43 -0800
Subject: [PATCH] Publish metadata on startup

---
 backend/README.md       | 11 ++++++++-
 backend/src/config.rs   | 14 +++++++++++
 backend/src/main.rs     | 10 ++++++++
 backend/src/platform.rs | 53 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 backend/src/platform.rs

diff --git a/backend/README.md b/backend/README.md
index c18b8d7..77dcba7 100644
--- a/backend/README.md
+++ b/backend/README.md
@@ -37,6 +37,9 @@ Environment variables:
 | `RELAY_DOMAIN` | Relay base domain for subdomains | `spaces.coracle.social` |
 | `NWC_URL` | Platform NWC URL for invoice generation | _required for billing_ |
 | `NOSTR_INDEXER_RELAYS` | Comma-separated relays to fetch kind `10050` DM relays | _required for notifications_ |
+| `PLATFORM_NAME` | Platform display name for kind `0` metadata | _optional_ |
+| `PLATFORM_DESCRIPTION` | Platform description for kind `0` metadata | _optional_ |
+| `PLATFORM_MESSAGING_RELAYS` | Comma-separated relays published in kind `10050` | _optional_ |
 
 The database directory is created automatically if it doesn’t exist.
 
@@ -82,6 +85,13 @@ The backend runs an in-process billing loop that:
 - Sends NIP-17 DMs with invoices when recurring is off
 - Sends NIP-17 DMs on successful payment when recurring is on
 
+On startup, the backend publishes:
+
+- Kind `0` metadata (name/description)
+- Kind `10050` relay list for DMs
+
+These are published to the relays listed in `NOSTR_INDEXER_RELAYS`.
+
 ## API Routes
 
 Tenant routes (all require NIP-98 auth; pubkey is inferred from the token):
@@ -108,4 +118,3 @@ Admin routes (all require NIP-98 auth; pubkey must be in `HOSTING_ADMIN_PUBKEYS`
 ## Next Steps
 
 - Add invoice generation and billing jobs
-- On start, publish kind 0, 10002, 10050 to indexer relays based on env vars
diff --git a/backend/src/config.rs b/backend/src/config.rs
index f46f4b5..a0ad3d4 100644
--- a/backend/src/config.rs
+++ b/backend/src/config.rs
@@ -11,6 +11,9 @@ pub struct Config {
     pub relay_domain: String,
     pub platform_nwc_url: String,
     pub indexer_relays: Vec<String>,
+    pub platform_name: String,
+    pub platform_description: String,
+    pub platform_messaging_relays: Vec<String>,
 }
 
 impl Config {
@@ -40,6 +43,14 @@ impl Config {
             .map(|v| v.trim().to_string())
             .filter(|v| !v.is_empty())
             .collect::<Vec<_>>();
+        let platform_name = env::var("PLATFORM_NAME").unwrap_or_default();
+        let platform_description = env::var("PLATFORM_DESCRIPTION").unwrap_or_default();
+        let platform_messaging_relays = env::var("PLATFORM_MESSAGING_RELAYS")
+            .unwrap_or_default()
+            .split(',')
+            .map(|v| v.trim().to_string())
+            .filter(|v| !v.is_empty())
+            .collect::<Vec<_>>();
 
         Self {
             database_url,
@@ -51,6 +62,9 @@ impl Config {
             relay_domain,
             platform_nwc_url,
             indexer_relays,
+            platform_name,
+            platform_description,
+            platform_messaging_relays,
         }
     }
 }
diff --git a/backend/src/main.rs b/backend/src/main.rs
index 84443df..b8b4718 100644
--- a/backend/src/main.rs
+++ b/backend/src/main.rs
@@ -5,6 +5,7 @@ mod config;
 mod db;
 mod models;
 mod notifications;
+mod platform;
 mod provisioning;
 mod repo;
 
@@ -20,6 +21,7 @@ use crate::config::Config;
 use crate::db::init_pool;
 use crate::billing::BillingService;
 use crate::notifications::Nip17Notifier;
+use crate::platform::publish_platform_identity;
 use crate::provisioning::Provisioner;
 use crate::repo::Repo;
 
@@ -35,6 +37,14 @@ async fn main() -> Result<()> {
 
     let pool = init_pool(&config.database_url).await?;
     let repo = Repo::new(pool);
+    publish_platform_identity(
+        &config.platform_secret,
+        &config.indexer_relays,
+        &config.platform_name,
+        &config.platform_description,
+        &config.platform_messaging_relays,
+    )
+    .await?;
     let notifier = Nip17Notifier::new(config.platform_secret.clone(), config.indexer_relays.clone()).await?;
     let billing = BillingService::new(
         repo.clone(),
diff --git a/backend/src/platform.rs b/backend/src/platform.rs
new file mode 100644
index 0000000..833d9d6
--- /dev/null
+++ b/backend/src/platform.rs
@@ -0,0 +1,53 @@
+use anyhow::{anyhow, Result};
+use nostr_sdk::prelude::*;
+
+pub async fn publish_platform_identity(
+    platform_secret: &str,
+    indexer_relays: &[String],
+    name: &str,
+    description: &str,
+    messaging_relays: &[String],
+) -> Result<()> {
+    if indexer_relays.is_empty() {
+        return Ok(());
+    }
+
+    if platform_secret.trim().is_empty() {
+        return Err(anyhow!("PLATFORM_SECRET is required for platform identity"));
+    }
+
+    let keys = Keys::parse(platform_secret)?;
+    let client = Client::new(keys);
+
+    for relay in indexer_relays {
+        client.add_relay(relay).await?;
+    }
+
+    client.connect().await;
+
+    let mut metadata = Metadata::new();
+    if !name.is_empty() {
+        metadata = metadata.name(name);
+    }
+    if !description.is_empty() {
+        metadata = metadata.about(description);
+    }
+
+    let metadata_builder = EventBuilder::metadata(&metadata);
+    client.send_event_builder(metadata_builder).await?;
+
+    if messaging_relays.is_empty() {
+        return Ok(());
+    }
+
+    let mut tags = Vec::new();
+    for relay in messaging_relays {
+        let tag = Tag::parse(["relay", relay.as_str()])?;
+        tags.push(tag);
+    }
+
+    let relay_builder = EventBuilder::new(Kind::Custom(10050), "").tags(tags);
+    client.send_event_builder(relay_builder).await?;
+
+    Ok(())
+}