lean_ctx/tools/registered/
ctx_expand.rs

1use rmcp::ErrorData;
2use rmcp::model::Tool;
3use serde_json::{Map, Value, json};
4
5use crate::server::tool_trait::{McpTool, ToolContext, ToolOutput};
6use crate::tool_defs::tool_def;
7
8pub struct CtxExpandTool;
9
10impl McpTool for CtxExpandTool {
11    fn name(&self) -> &'static str {
12        "ctx_expand"
13    }
14
15    fn tool_def(&self) -> Tool {
16        tool_def(
17            "ctx_expand",
18            "Retrieve archived tool output: see [Archived:ID] → ctx_expand id=ID \
19             (zero-loss, original preserved). head/tail/search filter lines; \
20             action=list|search_all browses/queries archives.\n\
21             ANTIPATTERN: not for project files — use ctx_read or ctx_compose.",
22            json!({
23                "type": "object",
24                "properties": {
25                    "id": { "type": "string", "description": "Archive ID or @F1 ref" },
26                    "action": { "type": "string", "description": "retrieve|list|search_all" },
27                    "start_line": { "type": "integer" },
28                    "end_line": { "type": "integer" },
29                    "head": { "type": "integer" },
30                    "tail": { "type": "integer" },
31                    "search": { "type": "string" },
32                    "json_keys": { "type": "boolean" },
33                    "json_path": { "type": "string", "description": "e.g. data.items.0" },
34                    "query": { "type": "string" },
35                    "session_id": { "type": "string" }
36                },
37                "allOf": [
38                    { "if": { "properties": { "action": { "const": "search_all" } }, "required": ["action"] }, "then": { "required": ["query"] } },
39                    { "if": { "not": { "properties": { "action": { "enum": ["list", "search_all"] } }, "required": ["action"] } }, "then": { "required": ["id"] } }
40                ]
41            }),
42        )
43    }
44
45    fn handle(
46        &self,
47        args: &Map<String, Value>,
48        _ctx: &ToolContext,
49    ) -> Result<ToolOutput, ErrorData> {
50        let args_val = Value::Object(args.clone());
51        let result = crate::tools::ctx_expand::handle(&args_val);
52        Ok(ToolOutput::simple(result))
53    }
54}
lean_ctx/tools/registered/ctx_expand.rs

lean_ctx/tools/registered/
ctx_expand.rs
