sigil_searchUsername
Search usernames by ASCII prefix, with limit.
Method
sigil_searchUsername is registered in the canonical JSON-RPC catalog. Use POST /rpc, Content-Type: application/json, JSON-RPC 2.0 and a caller-controlled request id. Node RPC profile, build feature and runtime activation checks still apply.
Search usernames by ASCII prefix, with limit.
Request binding
Source handler: rpc_username::handle_search_username in sigil/node/sigil-node/src/rpc_username.rs, line 110.
The handler directly reads these named fields: limit. Additional typed parsing, aliases and nested validation are defined by its request types. Field presence alone does not establish optionality.
Parsing excerpt
These source excerpts show binding and validation; they are not runnable client code.
let prefix = match extract_string_param(&req.params, 0, "prefix") {
Some(p) => p,
None => return RpcResponse::error(req.id.clone(), -32602, "missing 'prefix' parameter"),
};
.or_else(|| req.params.get(1).and_then(|v| v.as_u64()))
.unwrap_or(DEFAULT_SEARCH_LIMIT as u64) as usize;Responses and failures
Check HTTP status, parse the JSON-RPC envelope, reject error, and require result on success. Preserve large base-unit integers without floating-point rounding. A catalog method does not bypass authentication, capability, policy or activation requirements.