# Guarded Filesystem Slice

This slice implements filesystem operations (`edit_file`, `write_file`, etc.) that are guarded by the Session Guard's Investigation State Machine.

## Purpose

Instead of using an external, unguarded filesystem MCP server, Arela internally implements these tools. This allows us to intercept every write operation and block it if the agent has not completed the investigation phase.

## Tools Provided

| Tool | Guarded | Purpose |
|------|---------|---------|
| `edit_file` | ✅ YES | Modify existing files |
| `write_file` | ✅ YES | Create or overwrite files |
| `read_file` | ❌ NO | Read file content (Tracked as Evidence) |
| `list_directory` | ❌ NO | Explore file structure |
| `delete_file` | ✅ YES | Delete files |
| `create_directory` | ✅ YES | Create directories |
| `move_file` | ✅ YES | Rename/move files |

## Security Implementation

Every write operation calls `checkWriteAccessOp(toolName)` from `slices/guard/ops.ts`.
- If Arela is in `DISCOVERY`, `ANALYSIS`, or `VERIFICATION` state, the operation throws an error.
- If Arela is in `IMPLEMENTATION` or `REVIEW` state, the operation proceeds.

## Path Safety

All operations use strict path validation:
- Must be absolute paths
- Must resolve to strings (no nulls)
- Must not traverse outside allowed CWD (future enhancement)


The AI's Memory Layer for Vibecoding - Context persistence via MCP. 

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An ambiguous license classifier was found.

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Bad semver

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Bad dependency semver

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Bidirectional unicode control characters

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Bin script confusion

This Chrome extension includes content scripts that execute JavaScript on specified websites.

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Chrome: Content Script

This Chrome extension requests host permissions to access specific websites or domains.

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Chrome: Host Permission

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Chrome: Permission

This Chrome extension requests wildcard host permissions that grant broad access to websites.

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Chrome: Wildcard Host Permission

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

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Title

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Uses debug, reflection and dynamic code execution features.

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Dynamic require

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Accesses the file system, and could potentially read sensitive data.

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A GitHub context variable (such as issue title, PR description, or comment body) is being exported as an environment variable. These context values are user-controlled and could be exploited by subsequent workflow steps.

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High entropy strings

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Unicode homoglyphs

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HTTP dependency

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Modified license exception

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What is network access?

Network access

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arela

Guarded Filesystem Slice

Purpose

Tools Provided

Security Implementation

Path Safety

Keywords

Related posts

Tool	Guarded	Purpose
`edit_file`	✅ YES	Modify existing files
`write_file`	✅ YES	Create or overwrite files
`read_file`	❌ NO	Read file content (Tracked as Evidence)
`list_directory`	❌ NO	Explore file structure
`delete_file`	✅ YES	Delete files
`create_directory`	✅ YES	Create directories
`move_file`	✅ YES	Rename/move files

arela

Guarded Filesystem Slice

Purpose

Tools Provided

Security Implementation

Path Safety

Keywords

Related posts

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