Zip64 entries list

zip64-entries-list · version 1.0.0 · Structured formats · free, no key needed

List ZIP64 central-directory entries with exact decimal-string sizes and offsets.

Use when you need to: list ZIP64 central entries · enumerate ZIP64 file records · read ZIP64 entry sizes.

Decide before calling

Read the versioned contract and the supported scope below. Reuse zip64-entries-list@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 zip64-entries-list@1.0.0 for list ZIP64 central entries. 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

• list ZIP64 central entries
• enumerate ZIP64 file records
• read ZIP64 entry sizes
• show ZIP64 entry offsets
• decode ZIP64 extra fields
• inventory ZIP64 directory names

Not supported

• extracting file contents
• repairing malformed archives
• multi-disk or encrypted archives

Behavior

• Implements PKWARE APPNOTE 6.3.10 sections 4.3.14, 4.3.15, and 4.5.3.
• ZIP64 sentinel replacements are consumed in APPNOTE order: uncompressed size, compressed size, local-header offset, disk start.
• All 64-bit sizes and offsets are returned as exact base-10 strings; malformed input is rejected without repair.
• Only single-disk, unencrypted archives are accepted.
• Disclaimer: format transform only; provides no confidentiality, integrity, or authenticity.

Input

• archive_base64 (string, required): min length 4; max length 87384; pattern ^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$

Output

• standard_version (constant "PKWARE APPNOTE 6.3.10 sections 4.3.14, 4.3.15, and 4.5.3", required)
• entries (array of object, required): max items 64

Limits

• max archive bytes: 65536
• max entries: 64
• max name bytes: 256
• max extra bytes: 1024

Example

Request input:

{
  "archive_base64": "UEsGBiwAAAAAAAAALQAtAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABQSwYHAAAAAAAAAAAAAAAAAQAAAFBLBQYAAAAA////////////////AAA="
}

Response:

{
  "result": {
    "standard_version": "PKWARE APPNOTE 6.3.10 sections 4.3.14, 4.3.15, and 4.5.3",
    "entries": []
  }
}

How to call it

MCP

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

{
  "id": "zip64-entries-list",
  "version": "1.0.0",
  "input": {
    "archive_base64": "UEsGBiwAAAAAAAAALQAtAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABQSwYHAAAAAAAAAAAAAAAAAQAAAFBLBQYAAAAA////////////////AAA="
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/zip64-entries-list/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"archive_base64":"UEsGBiwAAAAAAAAALQAtAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABQSwYHAAAAAAAAAAAAAAAAAQAAAFBLBQYAAAAA////////////////AAA="}'

The machine-readable contract is at /v1/tools/zip64-entries-list/versions/1.0.0.

CLI

node cli.mjs run zip64-entries-list 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

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