nostcat

Websocket client for nostr relay scripting

Examples

Using interactive input shell $ nostcat wss://relay.damus.io <return> ["REQ", "RAND", {"kinds": [1], "limit": 8}] <return> <ctrl-D>

Using stdin (supports multiple lines of commands) ```shell $ echo '["REQ", "RAND", {"kinds": [1], "limit": 8}]' | nostcat wss://relay.damus.io

$ cat commands.txt ["REQ", "RAND", {"kinds": [1], "limit": 2}] ["REQ", "RAND2", {"kinds": [2], "limit": 2}]

$ cat commands.txt | nostcat wss://relay.damus.io

```

Using jq to query Nostr JSON events and select the event JSON ```shell $ echo '["REQ", "RAND", {"kinds": [1], "limit": 8}]' | nostcat wss://relay.damus.io | jq '.[2]'

$ echo '["REQ", "RAND", {"kinds": [1], "limit": 8}]' | nostcat wss://relay.damus.io | jq '.[2].content' ```

Unique (dedupe) results as they come in (note: no longer applies sorting events - FIFO) shell $ echo '["REQ", "RAND", {"kinds": [1], "limit": 8}]' | nostcat --unique wss://relay.damus.io wss://nostr.ono.re

With a websocket connection timeout in milliseconds shell $ echo '["REQ", "RAND", {"kinds": [1], "limit": 2}]' | nostcat --connect-timeout 250 wss://relay.damus.io

Stream websocket data (like tail -f) shell $ echo '["REQ", "RAND", {"kinds": [1], "limit": 8}]' | nostcat --stream wss://relay.damus.io

Output info log messages which can assist with debugging shell $ echo '["REQ", "RAND", {"kinds": [1], "limit": 8}]' | RUST_LOG=info nostcat wss://relay.damus.io

Pipe events from one server to another (currently limited to 1 event at a time) shell $ echo '["REQ", "CID", {"limit": 1}]' | nostcat wss://relay.damus.io | jq -c 'del(.[1])' | nostcat wss://nostr.ono.re

Pipe events from one server to another (for multiple events, ctrl-C when finished) shell $ echo '["REQ", "CID", {"limit": 3}]' | nostcat wss://relay.damus.io | jq -c 'del(.[1])' | nostcat --stream wss://nostr.ono.re <ctrl-C>

Getting started

Using Cargo to install (requires ~/.cargo/bin to be in PATH) shell $ cargo install nostcat

Building from source (may be unstable) shell $ git clone https://github.com/blakejakopovic/nostcat $ cargo build --release