# text_diff

Line-level diff of two texts (LCS): counts of added/removed lines plus a marked-up line list. Runs on smart-tools.xyz.

Agent View of the PolicyLayer registry record for `text_diff`. HTML page: https://policylayer.com/tools/io-github-9thshini-smart-tools/text-diff

## Facts

- Tool: `text_diff`
- Server: SmartTools (`https://smart-tools.xyz/mcp`) — https://policylayer.com/tools/io-github-9thshini-smart-tools.md
- Homepage: https://github.com/https://smart-tools.xyz/mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 5 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `a` | string | yes | First (original) text |
| `b` | string | yes | Second (changed) text |
| `trim` | boolean | no | Trim each line before comparing (default true) |
| `locale` | string | no | Language for the source_url link (default en) |
| `ignore_case` | boolean | no | Compare case-insensitively (default false) |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "text_diff",
    "arguments": {
      "a": "<a>",
      "b": "<b>"
    }
  }
}
```

## Why text_diff is rated Low

Even though text_diff only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

## Use case

AI agents call text_diff to retrieve information from SmartTools without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches SmartTools:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "text_diff": {}
  }
}
```

## Other tools on SmartTools (72)

- `remove_duplicates` — Destructive — https://policylayer.com/tools/io-github-9thshini-smart-tools/remove-duplicates.md
- `vat_calculator` — Destructive — https://policylayer.com/tools/io-github-9thshini-smart-tools/vat-calculator.md
- `age_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/age-calculator.md
- `angle_converter` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/angle-converter.md
- `area_converter` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/area-converter.md
- `aspect_ratio_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/aspect-ratio-calculator.md
- `base64` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/base64.md
- `bmi_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/bmi-calculator.md
- `bmr_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/bmr-calculator.md
- `body_fat_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/body-fat-calculator.md
- `case_converter` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/case-converter.md
- `color_converter` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/color-converter.md
- `compound_interest_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/compound-interest-calculator.md
- `cron_parser` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/cron-parser.md
- `csv_to_json` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/csv-to-json.md
- `csv_to_sql` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/csv-to-sql.md
- `date_difference_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/date-difference-calculator.md
- `discount_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/discount-calculator.md
- `due_date_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/due-date-calculator.md
- `electricity_cost_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/electricity-cost-calculator.md
- `energy_converter` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/energy-converter.md
- `file_hash` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/file-hash.md
- `fraction_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/fraction-calculator.md
- `fuel_cost_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/fuel-cost-calculator.md
- `gitignore_generator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/gitignore-generator.md
- `gpa_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/gpa-calculator.md
- `gradient_generator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/gradient-generator.md
- `hash_generator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/hash-generator.md
- `hours_calculator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/hours-calculator.md
- `htaccess_generator` — Execute — https://policylayer.com/tools/io-github-9thshini-smart-tools/htaccess-generator.md
- …and 42 more: https://policylayer.com/tools/io-github-9thshini-smart-tools.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-9thshini-smart-tools · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-9thshini-smart-tools