Check public PyPI or npm package identity and a requested version
Check public PyPI or npm package identity and a requested version. Compare up to five supplied candidate names for normalized-name equality and bounded edit-distance confusion. Return sourced existence and version evidence without downloading code. No malware, vulnerability, publisher-authenticity or installation-safety guarantee.
Answeringour last check, 2026-10-20
1 of 1checks answered this week
1007 msmedian answer time
$0.005listed price per call
$0.005price it asked us
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://api.mekler.ai/v1/data/packages/check-registry-identity
| Category | Code and developer |
|---|---|
| Provider host | api.mekler.ai |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-20 | valid payment request | 402 | $0.005 | 1007 ms |
Example input (from the provider)
{
"body": {
"compare_names": [
"pip-tools"
],
"ecosystem": "pypi",
"name": "pip",
"request_id": "package-identity-example-001"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"compare_names": {
"default": [],
"items": {
"maxLength": 128,
"type": "string"
},
"maxItems": 5,
"type": "array"
},
"ecosystem": {
"enum": [
"pypi",
"npm"
],
"type": "string"
},
"name": {
"maxLength": 128,
"type": "string"
},
"request_id": {
"pattern": "^[A-Za-z0-9_-]{16,64}$",
"type": "string"
},
"version": {
"maxLength": 80,
"type": [
"string",
"null"
]
}
},
"required": [
"ecosystem",
"name",
"request_id"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"comparisons": {
"items": {
"additionalProperties": false,
"properties": {
"edit_distance": {
"type": "integer"
},
"exists": {
"type": "boolean"
},
"name": {
"type": "string"
},
"package_exists": {
"type": "boolean"
},
"possible_name_confusion": {
"type": "boolean"
},
"requested_version": {
"type": [
"string",
"null"
]
},
"same_normalized_name": {
"type": "boolean"
},
"source_url": {
"type": "string"
},
"version": {
"type": [
"string",
"null"
]
},
"version_exists": {
"type": [
"boolean",
"null"
]
}
},
"required": [
"exists",
"name",
"version",
"source_url",
"requested_version",
"package_exists",
"version_exists",
"edit_distance",
"same_normalized_name",
"possible_name_confusion"
],
"type": "object"
},
"type": "array"
},
"ecosystem": {
"type": "string"
},
"identity": {
"additionalProperties": false,
"properties": {
"exists": {
"type": "boolean"
},
"name": {
"type": "string"
},
"package_exists": {
"type": "boolean"
},
"requested_version": {
"type": [
"string",
"null"
]
},
"source_url": {
"type": "string"
},
"version": {
"type": [
"string",
"null"
]
},
"version_exists": {
"type": [
"boolean",
"null"
]
}
},
"required": [
"exists",
"name",
"version",
"source_url",
"requested_version",
"package_exists",
"version_exists"
],
"type": "object"
},
"limitations": {
"items": {
"type": "string"
},
"type": "array"
},
"observed_at": {
"type": "string"
},
"status": {
"type": "string"
}
},
"required": [
"status",
"ecosystem",
"identity",
"comparisons",
"observed_at",
"limitations"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}