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Xcode IndexSAFE

mcp/block/xcode-index
MCP server by block · Audited 2026-10-08
⚑ Report / re-scanSource ↗

Give AI agents access to Xcode's index

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
4 4r · 0w · 0d
Transport
—
License
Apache-2.0
Stars
68
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

Gives Goose/Cursor access to your iOS/macOS project index through the Model Control Protocol (MCP) and IndexStoreDB. This provides exhaustive lists of function call sites to help your agent with refactoring and code navigation.

Example prompt

"Remove myParameter from the initializer on line 48 of MyViewController.swift. Use the Xcode Index MCP to ensure all references are updated."

How to use

  1. Install uv (Python package manager) and run uv sync
brew install uv
cd /path/to/this/repo
uv sync
  1. Build the Swift service (Xcode must be installed)
cd swift-service
swift build

This step is required as it provides the interface to Xcode's index.

  1. Install in Agent of your choice

Goose:

Go to settings and add a custom extension. In the modal that pops up, under the command field, add this line:

/Users//Development/xcode-index-mcp/.venv/bin/xcode-index-mcp

Note: Replace `` with your actual system username, or with the correct path xcode-index-mcp on your machine.

The rest should look something like this:

Cursor:

Go to Settings > MCP > Add new global MCP server. Update mcp.json (typically located in your Cursor configuration directory) to look something like this:

{
"mcpServers": {
"Xcode Index MCP": {
"command": "/Users//Development/xcode-index-mcp/.venv/bin/xcode-index-mcp"
}
}
}

Note: Replace `` with your actual system username, or with the correct path xcode-index-mcp on your machine.

Claude Code:

Run this command in the terminal to add the mcp to Claude Code

claude mcp add xcode-index-mcp -- /Users//Development/xcode-index-mcp/.venv/bin/xcode-index-m
Read from source at commit 961a7c6f779aOBSERVED · 2026-10-08
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.

claude-code
claude mcp add xcode-index-mcp -- uvx xcode-index-mcp
claude-desktop
{
  "mcpServers": {
    "xcode-index-mcp": {
      "command": "uvx",
      "args": [
        "xcode-index-mcp"
      ]
    }
  }
}
03

Exposed tools (4)

4 read · 0 write · 0 destructive.

ToolRiskDescription
get_occurrencesread
load_indexread
search_patternread
symbol_occurrencesread
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (1 observation(s))
Network
none-observed
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (2)

LOWInventory / provenance · inv.hidden_file · CWE-1104
.gooseHints
.gooseHints
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
src/xcode_index_mcp/server.py:104
relative_swift_executable_dir = "../../swift-service/.build/debug"

Gates applied: no_behavioural_pass.

Audited 2026-10-08 · audit v0.4.1 · source sha 961a7c6f779afull audit observations/trust-audit/mcp-server/block__xcode-index.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-08961a7c6f779aSAFEB89first audit
06

Questions

What is the Xcode Index MCP server?

Give AI agents access to Xcode's index

What tools does Xcode Index expose?

4 in total: 4 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Xcode Index safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does Xcode Index need?

No credential environment variables were found in its source, so it appears to need none.

How current is this page?

The grade is for one exact copy of the source (961a7c6f779a), read on 2026-10-08. The repository is watched and re-audited when it changes.

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