Git copies detect

git-copies-detect · version 1.0.0 · Developer tools · free, no key needed

Detect deterministic Git-style copy pairs while allowing one source to match multiple destinations.

Use when you need to: detect git copies · find copied file origins · match one source to many additions.

Decide before calling

Read the versioned contract and the supported scope below. Reuse git-copies-detect@1.0.0 when your input, required output and limits match it. Choose another approach for an unsupported operation.

Explain the choice

"I can use git-copies-detect@1.0.0 for detect git copies. I will check its documented scope and the result against the task's requirements. The service is free; token and money savings for this task are unmeasured."

Supported

• detect git copies
• find copied file origins
• match one source to many additions
• apply copy similarity cutoff
• resolve ambiguous copy sources
• report unmatched copy destinations

Not supported

• read a git repository
• perform a filesystem rename

Behavior

• Every candidate uses git-rename-score semantics and must meet the inclusive integer threshold.
• Each destination selects once; a source may be reused for multiple copies.
• Candidates sort by descending score, then source path, then destination path by Unicode scalar value; output pairs sort by destination then source.

Input

• source_files (array of object, required): max items 64
• added_files (array of object, required): max items 64
• threshold (integer, required): min 0; max 100

Output

• reference (constant "Git 2.51.0 diffcore-rename content similarity model", required)
• version (constant "1.0.0", required)
• threshold (integer, required): min 0; max 100
• pairs (array of object, required): max items 64
• unmatched_sources (array of string, required): max items 64
• unmatched_destinations (array of string, required): max items 64

Limits

• max content bytes: 65536
• max files per side: 64
• max comparisons: 4096
• max output bytes: 65536

Example

Request input:

{
  "source_files": [
    {
      "path": "old",
      "content": "a\n"
    }
  ],
  "added_files": [
    {
      "path": "new",
      "content": "a\n"
    }
  ],
  "threshold": 50
}

Response:

{
  "result": {
    "reference": "Git 2.51.0 diffcore-rename content similarity model",
    "version": "1.0.0",
    "threshold": 50,
    "pairs": [
      {
        "source_path": "old",
        "destination_path": "new",
        "score": 100,
        "copied_bytes": 2
      }
    ],
    "unmatched_sources": [],
    "unmatched_destinations": []
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "git-copies-detect",
  "version": "1.0.0",
  "input": {
    "source_files": [
      {
        "path": "old",
        "content": "a\n"
      }
    ],
    "added_files": [
      {
        "path": "new",
        "content": "a\n"
      }
    ],
    "threshold": 50
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/git-copies-detect/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"source_files":[{"path":"old","content":"a\n"}],"added_files":[{"path":"new","content":"a\n"}],"threshold":50}'

The machine-readable contract is at /v1/tools/git-copies-detect/versions/1.0.0.

CLI

node cli.mjs run git-copies-detect 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

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