lean-ctx 3.9.1

Context Runtime for AI Agents with CCP. 71 MCP tools, 10 read modes, 95+ compression patterns, cross-session memory (CCP), persistent AI knowledge with temporal facts + contradiction detection, multi-agent context sharing, LITM-aware positioning, AAAK compact format, adaptive compression with Thompson Sampling bandits. Supports 24+ AI tools. Reduces LLM token consumption by up to 99%.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

//! "Did you mean?" suggestions for mistyped top-level CLI commands.
//!
//! The dispatch match in [`super`] is the source of truth for what commands
//! exist; this list mirrors the user-facing names (primary spellings plus the
//! common aliases). A missing entry only costs a suggestion — never a wrong
//! dispatch — so it can lag the match slightly without breaking anything.

/// Known top-level command names + their well-known aliases.
const KNOWN_COMMANDS: &[&str] = &[
    "shell",
    "gain",
    "spend",
    "savings",
    "learning",
    "conformance",
    "selftest",
    "health",
    "billing",
    "finops",
    "roi",
    "output-savings",
    "token-report",
    "report-tokens",
    "pack",
    "policy",
    "plugin",
    "plugins",
    "addon",
    "addons",
    "rules",
    "proof",
    "verify",
    "eval",
    "verify-cache",
    "cache-selftest",
    "visualize",
    "audit",
    "compliance",
    "agent",
    "instructions",
    "index",
    "semantic-search",
    "search-code",
    "explore",
    "repomap",
    "repo-map",
    "cep",
    "dashboard",
    "team",
    "provider",
    "serve",
    "watch",
    "proxy",
    "daemon",
    "init",
    "setup",
    "onboard",
    "install",
    "bootstrap",
    "status",
    "read",
    "call",
    "diff",
    "grep",
    "glob",
    "find",
    "ls",
    "deps",
    "discover",
    "ghost",
    "filter",
    "heatmap",
    "graph",
    "smells",
    "session",
    "sessions",
    "ledger",
    "control",
    "plan",
    "compile",
    "knowledge",
    "skillify",
    "summary",
    "overview",
    "compress",
    "wrapped",
    "benchmark",
    "compact",
    "profile",
    "tools",
    "config",
    "allow",
    "security",
    "yolo",
    "secure",
    "lockdown",
    "trust",
    "untrust",
    "stats",
    "introspect",
    "cache",
    "theme",
    "tee",
    "terse",
    "compression",
    "cheatsheet",
    "update",
    "upgrade",
    "restart",
    "stop",
    "dev-install",
    "codesign-setup",
    "doctor",
    "harden",
    "export-rules",
    "gotchas",
    "learn",
    "buddy",
    "cloud",
    "help",
    "mcp",
];

/// Returns the closest known command to `input`, or `None` when nothing is
/// near enough to suggest with confidence. Distance + budget live in the
/// shared [`crate::core::levenshtein`] helper (#712), so CLI commands, config
/// keys and MCP tool names all suggest with identical semantics.
pub(super) fn closest_command(input: &str) -> Option<&'static str> {
    crate::core::levenshtein::closest(input, KNOWN_COMMANDS.iter().copied())
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn suggests_close_typos() {
        assert_eq!(closest_command("udpate"), Some("update"));
        assert_eq!(closest_command("doctr"), Some("doctor"));
        assert_eq!(closest_command("statuss"), Some("status"));
        assert_eq!(closest_command("upgrad"), Some("upgrade"));
    }

    #[test]
    fn exact_match_returns_itself() {
        assert_eq!(closest_command("read"), Some("read"));
        assert_eq!(closest_command("doctor"), Some("doctor"));
    }

    #[test]
    fn rejects_unrelated_input() {
        assert_eq!(closest_command("xyzzyplughfoo"), None);
        assert_eq!(closest_command(""), None);
        assert_eq!(closest_command("   "), None);
    }
}