CSR Parser API

OnlineCredit Usage:1 per callRefreshed 1 month ago

avg: 289ms|p50: 273ms|p75: 299ms|p90: 331ms|p99: 393ms

Overview

To use CSR Parser, you need an API key. You can get one by creating a free account and visiting your dashboard.

POST Endpoint

URL

https://api.apiverve.com/v1/csrparser

Example

How to call the CSR Parser API in different programming languages.

cURL Request

curl -X POST \
  "https://api.apiverve.com/v1/csrparser" \
  -H "X-API-Key: your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
  "csr": "-----BEGIN CERTIFICATE REQUEST-----\nMIICvDCCAaQCAQAwdzELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlmb3JuaWEx\nFjAUBgNVBAcMDVNhbiBGcmFuY2lzY28xEzARBgNVBAoMCkV4YW1wbGUgQ28xEDAO\nBgNVBAsMB0RldlRlYW0xFDASBgNVBAMMC2V4YW1wbGUuY29tMIIBIjANBgkqhkiG\n9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuqKT3qPzGqKqV3LqR2r3XqKqKqKqKqKqKqKq\nKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq\nKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq\nKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq\nKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq\nKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq\nKwIDAQABoAAwDQYJKoZIhvcNAQELBQADggEBAH4jI5yKqKqKqKqKqKqKqKqKqKqK\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\n-----END CERTIFICATE REQUEST-----"
}'

JavaScript (Fetch API)

const response = await fetch('https://api.apiverve.com/v1/csrparser', {
  method: 'POST',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    "csr": "-----BEGIN CERTIFICATE REQUEST-----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\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\n-----END CERTIFICATE REQUEST-----"
})
});

const data = await response.json();
console.log(data);

Python (Requests)

import requests

headers = {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
}

payload = {
    "csr": "-----BEGIN CERTIFICATE REQUEST-----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\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\n-----END CERTIFICATE REQUEST-----"
}

response = requests.post('https://api.apiverve.com/v1/csrparser', headers=headers, json=payload)

data = response.json()
print(data)

Go (net/http)

package main

import (
    "fmt"
    "io"
    "net/http"
    "bytes"
    "encoding/json"
)

func main() {
    payload := map[string]interface{}{
        "csr": "-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----"
    }

    jsonPayload, _ := json.Marshal(payload)
    req, _ := http.NewRequest("POST", "https://api.apiverve.com/v1/csrparser", bytes.NewBuffer(jsonPayload))

    req.Header.Set("X-API-Key", "your_api_key_here")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}

Example Response

{
  "status": "ok",
  "error": null,
  "data": {
    "version": "v1",
    "subject": {
      "common_name": "example.com",
      "organization": "Example Company Inc",
      "organizational_unit": "IT Department",
      "locality": "San Francisco",
      "state": "California",
      "country": "US",
      "email": "[email protected]"
    },
    "public_key": {
      "algorithm": "RSA",
      "size_bits": 2048,
      "exponent": 65537
    },
    "signature_algorithm": "SHA256withRSA",
    "extensions": [],
    "fingerprints": {
      "sha1": "82:D3:E3:9A:FB:85:22:65:16:84:43:2F:BB:05:35:2A:95:37:BF:58",
      "sha256": "D8:73:E8:A3:DE:22:57:D6:AD:A0:AD:AB:53:75:FB:09:07:79:4D:21:CF:F1:0A:C0:55:EF:4B:67:A0:20:FE:9D",
      "md5": "4A:AC:A6:9D:40:6C:2F:34:51:D3:A7:7E:06:23:66:0A"
    },
    "pem": "-----BEGIN CERTIFICATE REQUEST-----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\nqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK\n-----END CERTIFICATE REQUEST-----",
    "size_bytes": 705,
    "format": "PEM",
    "is_valid": true
  }
}

Authentication

The CSR Parser API requires authentication via API key. Include your API key in the request header:

Required Header

X-API-Key: your_api_key_here

Learn more about authentication →

Interactive API Playground

Test the CSR Parser API directly in your browser with live requests and responses.

Try CSR Parser APIView details and test in the API marketplace

Parameters

The following parameters are available for the CSR Parser API:

Parse CSR

Parameter	Type	Required	Description	Default	Example
`csr`	string	`required`	The PEM-formatted Certificate Signing Request to parse	-	`-----BEGIN CERTIFICATE REQUEST-----...`

Response

The CSR Parser API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.

Other Response Formats

XML Response

200 OK

<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>ok</status>
  <error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
  <data>
    <version>v1</version>
    <subject>
      <common_name>example.com</common_name>
      <organization>Example Company Inc</organization>
      <organizational_unit>IT Department</organizational_unit>
      <locality>San Francisco</locality>
      <state>California</state>
      <country>US</country>
      <email>[email protected]</email>
    </subject>
    <public_key>
      <algorithm>RSA</algorithm>
      <size_bits>2048</size_bits>
      <exponent>65537</exponent>
    </public_key>
    <signature_algorithm>SHA256withRSA</signature_algorithm>
    <extensions>
    </extensions>
    <fingerprints>
      <sha1>82:D3:E3:9A:FB:85:22:65:16:84:43:2F:BB:05:35:2A:95:37:BF:58</sha1>
      <sha256>D8:73:E8:A3:DE:22:57:D6:AD:A0:AD:AB:53:75:FB:09:07:79:4D:21:CF:F1:0A:C0:55:EF:4B:67:A0:20:FE:9D</sha256>
      <md5>4A:AC:A6:9D:40:6C:2F:34:51:D3:A7:7E:06:23:66:0A</md5>
    </fingerprints>
    <pem>-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----</pem>
    <size_bytes>705</size_bytes>
    <format>PEM</format>
    <is_valid>true</is_valid>
  </data>
</response>

YAML Response

200 OK

status: ok
error: null
data:
  version: v1
  subject:
    common_name: example.com
    organization: Example Company Inc
    organizational_unit: IT Department
    locality: San Francisco
    state: California
    country: US
    email: [email protected]
  public_key:
    algorithm: RSA
    size_bits: 2048
    exponent: 65537
  signature_algorithm: SHA256withRSA
  extensions: []
  fingerprints:
    sha1: 82:D3:E3:9A:FB:85:22:65:16:84:43:2F:BB:05:35:2A:95:37:BF:58
    sha256: >-
      D8:73:E8:A3:DE:22:57:D6:AD:A0:AD:AB:53:75:FB:09:07:79:4D:21:CF:F1:0A:C0:55:EF:4B:67:A0:20:FE:9D
    md5: 4A:AC:A6:9D:40:6C:2F:34:51:D3:A7:7E:06:23:66:0A
  pem: |-
    -----BEGIN CERTIFICATE REQUEST-----
    MIICvDCCAaQCAQAwdzELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlmb3JuaWEx
    FjAUBgNVBAcMDVNhbiBGcmFuY2lzY28xEzARBgNVBAoMCkV4YW1wbGUgQ28xEDAO
    BgNVBAsMB0RldlRlYW0xFDASBgNVBAMMC2V4YW1wbGUuY29tMIIBIjANBgkqhkiG
    9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuqKT3qPzGqKqV3LqR2r3XqKqKqKqKqKqKqKq
    KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq
    KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq
    KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq
    KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq
    KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq
    KwIDAQABoAAwDQYJKoZIhvcNAQELBQADggEBAH4jI5yKqKqKqKqKqKqKqKqKqKqK
    qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK
    qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK
    qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK
    qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK
    qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK
    -----END CERTIFICATE REQUEST-----
  size_bytes: 705
  format: PEM
  is_valid: true

CSV Response

200 OK

key	value
version	v1
subject	{common_name:example.com,organization:Example Company Inc,organizational_unit:IT Department,locality:San Francisco,state:California,country:US,email:[email protected]}
public_key	{algorithm:RSA,size_bits:2048,exponent:65537}
signature_algorithm	SHA256withRSA
extensions	[]
fingerprints	{sha1:82:D3:E3:9A:FB:85:22:65:16:84:43:2F:BB:05:35:2A:95:37:BF:58,sha256:D8:73:E8:A3:DE:22:57:D6:AD:A0:AD:AB:53:75:FB:09:07:79:4D:21:CF:F1:0A:C0:55:EF:4B:67:A0:20:FE:9D,md5:4A:AC:A6:9D:40:6C:2F:34:51:D3:A7:7E:06:23:66:0A}
pem	-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----
size_bytes	705
format	PEM
is_valid	true

View in Marketplace

Response Structure

All API responses follow a consistent structure with the following fields:

Field	Type	Description	Example
`status`	string	Indicates whether the request was successful ("ok") or failed ("error")	`ok`
`error`	string \| null	Contains error message if status is "error", otherwise null	`null`
`data`	object \| null	Contains the API response data if successful, otherwise null	`{...}`

Learn more about response formats →

Response Data Fields

When the request is successful, the data object contains the following fields:

Response fields marked with Premium are available exclusively on paid plans.View pricing

Field	Type	Sample Value	Description
`version`	string	`"v1"`	CSR format version identifier
`subject`	object	`{...}`	-
└ `common_name`	string	`"example.com"`	Common name from CSR subject distinguished name
└ `organization`	string	`"Example Company Inc"`	Organization name from CSR subject field
└ `organizational_unit`	string	`"IT Department"`	Organizational unit from CSR subject
└ `locality`	string	`"San Francisco"`	Locality or city from CSR subject
└ `state`	string	`"California"`	State or province from CSR subject
└ `country`	string	`"US"`	Country code from CSR subject
└ `email`	string	`"[email protected]"`	Email address from CSR subject
`public_key`	object	`{...}`	-
└ `algorithm`	string	`"RSA"`	Public key algorithm type used in CSR
└ `size_bits`	number	`2048`	Public key size in bits
└ `exponent`Premium	number	`65537`	RSA public exponent value
`signature_algorithm`Premium	string	`"SHA256withRSA"`	Algorithm used to sign the CSR
`extensions`Premium	array	`[]`	X.509 extensions included in CSR
`fingerprints`Premium	object	`{...}`	CSR fingerprints in various hash formats
└ `sha1`	string	`"82:D3:E3:9A:FB:85:22:65:16:84:43:2F:BB:05:35:2A:95:37:BF:58"`	SHA1 fingerprint of CSR in colon format
└ `sha256`	string	`"D8:73:E8:A3:DE:22:57:D6:AD:A0:AD:AB:53:75:FB:09:07:79:4D:21:CF:F1:0A:C0:55:EF:4B:67:A0:20:FE:9D"`	SHA256 fingerprint of CSR in colon format
└ `md5`	string	`"4A:AC:A6:9D:40:6C:2F:34:51:D3:A7:7E:06:23:66:0A"`	MD5 fingerprint of CSR in colon format
`pem`	string	"-----BEGIN CERTIFICATE REQUEST----- MIICvDCCAaQCAQAwdzELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlmb3JuaWEx FjAUBgNVBAcMDVNhbiBGcmFuY2lzY28xEzARBgNVBAoMCkV4YW1wbGUgQ28xEDAO BgNVBAsMB0RldlRlYW0xFDASBgNVBAMMC2V4YW1wbGUuY29tMIIBIjANBgkqhkiG 9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuqKT3qPzGqKqV3LqR2r3XqKqKqKqKqKqKqKq KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq KqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKq KwIDAQABoAAwDQYJKoZIhvcNAQELBQADggEBAH4jI5yKqKqKqKqKqKqKqKqKqKqK qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK qKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqKqK -----END CERTIFICATE REQUEST-----"	PEM-encoded CSR data

Headers

Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →

GraphQL AccessALPHA

Access CSR Parser through GraphQL to combine it with other API calls in a single request. Query only the csr parser data you need with precise field selection, and orchestrate complex data fetching workflows.

Test CSR Parser in the GraphQL Explorer to confirm availability and experiment with queries.

Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.

GraphQL Endpoint

POST https://api.apiverve.com/v1/graphql

GraphQL Query Example

query {
  csrparser(
    input: {
      csr: "-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----"
    }
  ) {
    version
    subject {
      common_name
      organization
      organizational_unit
      locality
      state
      country
      email
    }
    public_key {
      algorithm
      size_bits
      exponent
    }
    signature_algorithm
    extensions
    fingerprints {
      sha1
      sha256
      md5
    }
    pem
    size_bytes
    format
    is_valid
  }
}

Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.

Try in GraphQL Explorer GraphQL Documentation

CORS Support

The CSR Parser API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →

Rate Limiting

CSR Parser requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →

Error Codes

The CSR Parser API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →

SDKs for CSR Parser

Official CSR Parser packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →

JitPack

No-Code Integrations

CSR Parser works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →

Zapier

Make

Pipedream

n8n

Power Automate

Frequently Asked Questions

How do I get an API key for CSR Parser?

Sign up for a free account at dashboard.apiverve.com. Your API key will be automatically generated and available in your dashboard. The same key works for CSR Parser and all other APIVerve APIs. The free plan includes 1,000 credits plus a 500 credit bonus.

How many credits does CSR Parser cost?

Each successful CSR Parser API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful csr parser lookups.

Can I use CSR Parser in production?

The free plan is for testing and development only. For production use of CSR Parser, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.

Can I use CSR Parser from a browser?

Yes! The CSR Parser API supports CORS with wildcard configuration, so you can call it directly from browser-based JavaScript without needing a proxy server. See the CORS section above for details.

What happens if I exceed my CSR Parser credit limit?

When you reach your monthly credit limit, CSR Parser API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.

What's Next?

Continue your journey with these recommended resources

Browse All APIs

Explore our complete catalog of APIs

Authentication Guide

Learn about API keys and security

Rate Limits

Understand usage limits and best practices

Was this page helpful?

CSR Parser API

Overview

POST Endpoint

Example

Authentication

Interactive API Playground

Parameters

Parse CSR

Response

Other Response Formats

Response Structure

Response Data Fields

Headers

GraphQL AccessALPHA

CORS Support

Rate Limiting

Error Codes

SDKs for CSR Parser

No-Code Integrations

Frequently Asked Questions

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