Diff Checker

Compare two pieces of text side-by-side with line- and word-level highlighting.

Ignore caseIgnore whitespace

LeftRight

−2 removed+3 added

1	The quick brown fox	1	The quick brown fox
2	jumps over
3	the lazy dog
		2	leaps over
		3	the sleepy dog
		4	at dawn

🔒 Both inputs are compared in your browser. Nothing is uploaded.

</>Use this tool programmaticallycurl · JavaScript · MCP

Same tool, callable from any HTTP client or from Claude (via MCP). Anonymous: 100 req/day per IP. Sign up for 1,000 req/day.

curl

curl https://api.b-e-a-d.com/tools/diff-checker/run \
  -H "Content-Type: application/json" \
  -d '{
  "left": "a",
  "right": "a",
  "ignoreCase": false,
  "ignoreWhitespace": false
}'

JavaScript (fetch)

const res = await fetch("https://api.b-e-a-d.com/tools/diff-checker/run", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
  "left": "a",
  "right": "a",
  "ignoreCase": false,
  "ignoreWhitespace": false
}),
});
const data = await res.json();
console.log(data.result);

MCP (Claude Desktop / Claude Code)

# In Claude Desktop / Claude Code, add to your MCP config:
{
  "mcpServers": {
    "bead": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.b-e-a-d.com"]
    }
  }
}

# Then ask Claude to call:
mcp__bead__bead_diff_checker

Full reference: developer docs · OpenAPI spec

About this tool

Uses the longest-common-subsequence algorithm to find the smallest set of additions and removals that turn one text into the other. For large inputs we cap at 5,000 lines per side — beyond that, use git diff or a desktop tool.

About this tool

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