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Enforce tool permissions before execution

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The Rust CLI/runtime now models permissions as ordered access levels, derives tool requirements from the shared tool specs, and prompts REPL users before one-off danger-full-access escalations from workspace-write sessions. This also wires explicit --permission-mode parsing and makes /permissions operate on the live session state instead of an implicit env-derived default.

Constraint: Must preserve the existing three user-facing modes read-only, workspace-write, and danger-full-access

Constraint: Must avoid new dependencies and keep enforcement inside the existing runtime/tool plumbing

Rejected: Keep the old Allow/Deny/Prompt policy model | could not represent ordered tool requirements across the CLI surface

Rejected: Continue sourcing live session mode solely from RUSTY_CLAUDE_PERMISSION_MODE | /permissions would not reliably reflect the current session state

Confidence: high

Scope-risk: moderate

Reversibility: clean

Directive: Add required_permission entries for new tools before exposing them to the runtime

Tested: cargo fmt; cargo clippy --workspace --all-targets -- -D warnings; cargo test -q

Not-tested: Manual interactive REPL approval flow in a live Anthropic session
This commit is contained in:
Yeachan-Heo
2026-04-01 00:06:15 +00:00
parent c139fe9bee
commit e2f061fd08
4 changed files with 331 additions and 101 deletions
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22
rust/crates/tools/src/lib.rs
View File

@@ -6,7 +6,7 @@ use std::time::{Duration, Instant};
use reqwest::blocking::Client;
use runtime::{
edit_file, execute_bash, glob_search, grep_search, read_file, write_file, BashCommandInput,
GrepSearchInput,
GrepSearchInput, PermissionMode,
};
use serde::{Deserialize, Serialize};
use serde_json::{json, Value};
@@ -45,6 +45,7 @@ pub struct ToolSpec {
pub name: &'static str,
pub description: &'static str,
pub input_schema: Value,
pub required_permission: PermissionMode,
}
#[must_use]
@@ -66,6 +67,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["command"],
"additionalProperties": false
}),
required_permission: PermissionMode::DangerFullAccess,
},
ToolSpec {
name: "read_file",
@@ -80,6 +82,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["path"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "write_file",
@@ -93,6 +96,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["path", "content"],
"additionalProperties": false
}),
required_permission: PermissionMode::WorkspaceWrite,
},
ToolSpec {
name: "edit_file",
@@ -108,6 +112,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["path", "old_string", "new_string"],
"additionalProperties": false
}),
required_permission: PermissionMode::WorkspaceWrite,
},
ToolSpec {
name: "glob_search",
@@ -121,6 +126,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["pattern"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "grep_search",
@@ -146,6 +152,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["pattern"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "WebFetch",
@@ -160,6 +167,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["url", "prompt"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "WebSearch",
@@ -180,6 +188,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["query"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "TodoWrite",
@@ -207,6 +216,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["todos"],
"additionalProperties": false
}),
required_permission: PermissionMode::WorkspaceWrite,
},
ToolSpec {
name: "Skill",
@@ -220,6 +230,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["skill"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "Agent",
@@ -236,6 +247,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["description", "prompt"],
"additionalProperties": false
}),
required_permission: PermissionMode::DangerFullAccess,
},
ToolSpec {
name: "ToolSearch",
@@ -249,6 +261,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["query"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "NotebookEdit",
@@ -265,6 +278,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["notebook_path"],
"additionalProperties": false
}),
required_permission: PermissionMode::WorkspaceWrite,
},
ToolSpec {
name: "Sleep",
@@ -277,6 +291,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["duration_ms"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "SendUserMessage",
@@ -297,6 +312,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["message", "status"],
"additionalProperties": false
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "Config",
@@ -312,6 +328,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["setting"],
"additionalProperties": false
}),
required_permission: PermissionMode::WorkspaceWrite,
},
ToolSpec {
name: "StructuredOutput",
@@ -320,6 +337,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"type": "object",
"additionalProperties": true
}),
required_permission: PermissionMode::ReadOnly,
},
ToolSpec {
name: "REPL",
@@ -334,6 +352,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["code", "language"],
"additionalProperties": false
}),
required_permission: PermissionMode::DangerFullAccess,
},
ToolSpec {
name: "PowerShell",
@@ -349,6 +368,7 @@ pub fn mvp_tool_specs() -> Vec<ToolSpec> {
"required": ["command"],
"additionalProperties": false
}),
required_permission: PermissionMode::DangerFullAccess,
},
]
}