Extract one bounded value from caller-supplied JSON using a deterministic simple

Extract one bounded value from caller-supplied JSON using a deterministic simple path such as items[2].name or $.data.id. Forest performs no network request or model inference, returns an explicit found flag, and supports only dot object keys plus numeric array indexes so lookup behavior stays predictable. Base mainnet USDC

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

POST https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/json/query

Our checks, last 30 days

Example input (from the provider)

{
  "body": {
    "json": {
      "items": [
        {
          "name": "a"
        },
        {
          "name": "b"
        }
      ]
    },
    "path": "items[1].name"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "json": {
              "description": "Public json value used to scope this lookup."
            },
            "path": {
              "description": "Repository file path whose public metadata should be checked.",
              "maxLength": 512,
              "minLength": 1,
              "type": "string"
            }
          },
          "required": [
            "json",
            "path"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "additionalProperties": false,
          "properties": {
            "capability": {
              "const": "json.query",
              "description": "Public capability value used to scope this lookup."
            },
            "data": {
              "additionalProperties": false,
              "description": "Public data value used to scope this lookup.",
              "properties": {
                "found": {
                  "description": "Public found value used to scope this lookup.",
                  "type": "boolean"
                },
                "input_bytes": {
                  "description": "Public input bytes value used to scope this lookup.",
                  "maximum": 102400,
                  "minimum": 0,
                  "type": "integer"
                },
                "path": {
                  "description": "Repository file path whose public metadata should be checked.",
                  "type": "string"
                },
                "scope": {
                  "const": "caller_supplied_json_path_lookup_only",
                  "description": "Public scope value used to scope this lookup."
                },
                "value": {
                  "description": "Public value value used to scope this lookup."
                },
                "value_type": {
                  "description": "Public value type value used to scope this lookup.",
                  "type": [
                    "string",
                    "null"
                  ]
                }
              },
              "required": [
                "path",
                "found",
                "value",
                "value_type",
                "input_bytes",
                "scope"
              ],
              "type": "object"
            },
            "meta": {
              "additionalProperties": false,
              "description": "Public meta value used to scope this lookup.",
              "properties": {
                "cache": {
                  "description": "Public cache value used to scope this lookup.",
                  "enum": [
                    "hit",
                    "miss",
                    "bypass"
                  ]
                },
                "checked_at": {
                  "description": "Public checked at value used to scope this lookup.",
                  "type": "string"
                },
                "duration_ms": {
                  "description": "Public duration ms value used to scope this lookup.",
                  "minimum": 0,
                  "type": "integer"
                },
                "provider": {
                  "description": "Public provider value used to scope this lookup.",
                  "type": [
                    "string",
                    "null"
                  ]
                }
              },
              "required": [
                "provider",
                "checked_at",
                "cache",
                "duration_ms"
              ],
              "type": "object"
            },
            "ok": {
              "const": true,
              "description": "Public ok value used to scope this lookup."
            },
            "version": {
              "const": "1",
              "description": "Package version whose public metadata should be checked."
            }
          },
          "required": [
            "ok",
            "capability",
            "version",
            "data",
            "meta"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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