Program Streams GetTopicSchema

GetTopicSchema returns the program-level proto used by one topic.

All topics from the same program share one schema document.

Request

message GetTopicSchemaRequest {  string topic = 1;}

Response

message GetTopicSchemaResponse {  string proto_schema = 1;  string message_type = 2;}

proto_schema contains every instruction and event message for the program.

message_type identifies the payload message for your selected topic.

grpcurl

grpcurl \  -H "x-api-key: YOUR_API_KEY" \  -import-path . \  -proto program-streams.proto \  -d '{"topic":"solana.pump_fun.trade_event"}' \  events.nln.clr3.org:443 \  nln.stream.v1.StreamService/GetTopicSchema

Schema workflow

1. Call ListTopics.
2. Pick a topic.
3. Call GetTopicSchema.
4. Save the returned proto with a content hash.
5. Generate your payload decoder.
6. Record message_type beside the topic.
7. Regenerate after a schema hash change.

Do not compile a fetched schema inside your event loop.