Semver Parser and Compare
Semver parser and comparator: parse a semantic version into major, minor, patch, prerelease and build parts; compare two versions by precedence including prerelease ordering; or test whether a version satisfies a range expression using caret, tilde, hyphen, x-ranges and comparator sets. Returns the parsed structure, the comparison result and the reason a range did not match.
Offering
- Provider
- api.duoleads.com
- Method
- GET
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Development
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://api.duoleads.com/v1/code/semver- MIME type
- application/json
- First seen
- 2026-10-16T01:50:38.788Z
- Last seen
- Tags
- semver, semantic-version, version-compare, versions, code
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "50000",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39"
}
]Observed health
- Status
- Healthy
- Latest latency
- 55 ms
- Average latency
- 578 ms
- HTTP status
- 402
- Last checked
- Reachability
- 100% over 14 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"GET"
]
},
"queryParams": {
"type": "object",
"properties": {
"op": {
"type": "string",
"description": "parse (default), compare, satisfies or sort.",
"enum": [
"parse",
"compare",
"satisfies",
"sort"
],
"maxLength": 64,
"default": "parse"
},
"version": {
"type": "string",
"description": "Version to parse (op=parse) or test (op=satisfies).",
"maxLength": 256
},
"a": {
"type": "string",
"description": "First version for op=compare.",
"maxLength": 256
},
"b": {
"type": "string",
"description": "Second version for op=compare.",
"maxLength": 256
},
"range": {
"type": "string",
"description": "Range expression for op=satisfies, e.g. ^1.2.0.",
"maxLength": 256
},
"versions": {
"type": "string",
"description": "Comma-separated versions for op=sort, at most 100.",
"maxLength": 2048
}
},
"required": []
}
},
"required": [
"type",
"method"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"a": {
"description": "First version for op=compare.",
"maxLength": 256,
"type": "string"
},
"b": {
"description": "Second version for op=compare.",
"maxLength": 256,
"type": "string"
},
"op": {
"default": "parse",
"description": "parse (default), compare, satisfies or sort.",
"enum": [
"parse",
"compare",
"satisfies",
"sort"
],
"maxLength": 64,
"type": "string"
},
"range": {
"description": "Range expression for op=satisfies, e.g. ^1.2.0.",
"maxLength": 256,
"type": "string"
},
"version": {
"description": "Version to parse (op=parse) or test (op=satisfies).",
"maxLength": 256,
"type": "string"
},
"versions": {
"description": "Comma-separated versions for op=sort, at most 100.",
"maxLength": 2048,
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"a": {
"type": "string"
},
"b": {
"type": "string"
},
"build": {
"items": {
"type": "string"
},
"type": "array"
},
"canonical": {
"type": [
"string",
"null"
]
},
"comparators": {
"items": {
"type": "string"
},
"type": "array"
},
"invalid": {
"items": {
"type": "string"
},
"type": "array"
},
"is_prerelease": {
"type": "boolean"
},
"major": {
"type": [
"integer",
"null"
]
},
"minor": {
"type": [
"integer",
"null"
]
},
"patch": {
"type": [
"integer",
"null"
]
},
"precedence_note": {
"type": "string"
},
"prerelease": {
"items": {
"type": [
"number",
"string"
]
},
"type": "array"
},
"range": {
"type": "string"
},
"reason": {
"type": [
"string",
"null"
]
},
"result": {
"type": "integer"
},
"satisfies": {
"type": "boolean"
},
"sorted": {
"items": {
"type": "string"
},
"type": "array"
},
"valid": {
"type": "boolean"
}
},
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"description": "RFC 3339 UTC with milliseconds",
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"items": {
"required": [
"id",
"version",
"published"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/code/semver"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}