JSON pointer list

json-pointer-list · version 1.0.0 · JSON & JSONL · free, no key needed

List RFC 6901 pointers to every reachable JSON node, root first.

Use when you need to: json pointer list · list json pointers · enumerate json pointers.

Decide before calling

Read the versioned contract and the supported scope below. Reuse json-pointer-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 json-pointer-list@1.0.0 for json pointer list. 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

json pointer list
list json pointers
enumerate json pointers

Not supported

json path
regex
prototype walk

Behavior

Accept only JSON values: null, boolean, finite number, string, array, and plain objects.
Reject NaN, Infinity, -Infinity, undefined, BigInt, functions, symbols, Date, Map, Set, RegExp, boxed primitives, Buffer, and sparse holes.
Canonicalize -0 to 0.
Objects may have null or Object.prototype; use own enumerable string keys only.
Treat __proto__, constructor, and toString as ordinary own keys. Never mutate Object.prototype.
Output objects must be Object.create(null). Deep-clone all returned JSON values.
Bound walk: max depth 32, max nodes 10000, max UTF-8 JSON bytes 250KiB of the input document string if provided as text; when json is already a value, bound the walked node count and depth.
Preorder walk: emit the pointer for the current node, then object keys in lexicographic UTF-16 order, then array indexes 0..n-1.
Root pointer is "". Object key tokens are escaped (~ -> ~0, / -> ~1).
Include both intermediate and leaf nodes. Max 10000 pointers (same as node bound).

Input

json (any JSON value, required)

Output

pointers (array of string, required): max items 10000

Limits

max json depth: 32
max json nodes: 10000

Example

Request input:

{
  "json": {
    "b": 1,
    "a": [
      false
    ]
  }
}

Response:

{
  "result": {
    "pointers": [
      "",
      "/a",
      "/a/0",
      "/b"
    ]
  }
}

How to call it

MCP

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

{
  "id": "json-pointer-list",
  "version": "1.0.0",
  "input": {
    "json": {
      "b": 1,
      "a": [
        false
      ]
    }
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/json-pointer-list/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"json":{"b":1,"a":[false]}}'

The machine-readable contract is at /v1/tools/json-pointer-list/versions/1.0.0.

CLI

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

Get the client at /clients/cli/.

JSON flatten: Flatten a JSON value into a null-prototype map keyed by RFC 6901 JSON Pointers.
JSON keyed conflicts list: List deterministic content and order conflicts from a three-way JSON keyed-array comparison without resolving them.
JSON schema additional find: Find every member a JSON Schema 2020-12 "additionalProperties": false forbids, with the member's JSON Pointer.
JSON schema batch validate: Validate many JSON records against one Draft 2020-12 subset schema; per-record validity, error pointers, counts.
JSON schema instance locate: Resolve RFC 6901 instance locations (string or URI fragment) from schema errors to values, or say why they fail.
JSON schema required missing: List every property a JSON Schema 2020-12 "required" keyword demands but the instance lacks, with JSON Pointers.