---
layout: api
page_title: Certificate Authority - Connect - HTTP API
description: |-
The /connect/ca endpoints provide tools for interacting with Connect's
Certificate Authority mechanism via Consul's HTTP API.
---
# Certificate Authority (CA) - Connect HTTP API
The `/connect/ca` endpoints provide tools for interacting with Connect's
Certificate Authority mechanism.
## List CA Root Certificates
This endpoint returns the current list of trusted CA root certificates in
the cluster.
| Method | Path | Produces |
| ------ | ------------------- | ------------------ |
| `GET` | `/connect/ca/roots` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/features/blocking),
[consistency modes](/api/features/consistency),
[agent caching](/api/features/caching), and
[required ACLs](/api#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `YES` | `all` | `none` | `none` |
### Parameters
- `pem` `(boolean: false)` - Specifies that the return body should be a PEM encoded
certificate chain suitable for use by applications needing to trust Connect CA
signed certificates. The Content-Type will be set to `application/pem-certificate-chain`
to indicate the format of the response.
### Sample Request
```shell-session
$ curl \
http://127.0.0.1:8500/v1/connect/ca/roots
```
### Sample Response
```json
{
"ActiveRootID": "c7:bd:55:4b:64:80:14:51:10:a4:b9:b9:d7:e0:75:3f:86:ba:bb:24",
"TrustDomain": "7f42f496-fbc7-8692-05ed-334aa5340c1e.consul",
"Roots": [
{
"ID": "c7:bd:55:4b:64:80:14:51:10:a4:b9:b9:d7:e0:75:3f:86:ba:bb:24",
"Name": "Consul CA Root Cert",
"SerialNumber": 7,
"SigningKeyID": "2d:09:5d:84:b9:89:4b:dd:e3:88:bb:9c:e2:b2:69:81:1f:4b:a6:fd:4d:df:ee:74:63:f3:74:55:ca:b0:b5:65",
"ExternalTrustDomain": "a1499528-fbf6-df7b-05e5-ae81e1873fc4",
"NotBefore": "2018-05-25T21:39:23Z",
"NotAfter": "2028-05-22T21:39:23Z",
"RootCert": "-----BEGIN CERTIFICATE-----\nMIICmDCCAj6gAwIBAgIBBzAKBggqhkjOPQQDAjAWMRQwEgYDVQQDEwtDb25zdWwg\nQ0EgNzAeFw0xODA1MjUyMTM5MjNaFw0yODA1MjIyMTM5MjNaMBYxFDASBgNVBAMT\nC0NvbnN1bCBDQSA3MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEq4S32Pu0/VL4\nG75gvdyQuAhqMZFsfBRwD3pgvblgZMeJc9KDosxnPR+W34NXtMD/860NNVJIILln\n9lLhIjWPQqOCAXswggF3MA4GA1UdDwEB/wQEAwIBhjAPBgNVHRMBAf8EBTADAQH/\nMGgGA1UdDgRhBF8yZDowOTo1ZDo4NDpiOTo4OTo0YjpkZDplMzo4ODpiYjo5Yzpl\nMjpiMjo2OTo4MToxZjo0YjphNjpmZDo0ZDpkZjplZTo3NDo2MzpmMzo3NDo1NTpj\nYTpiMDpiNTo2NTBqBgNVHSMEYzBhgF8yZDowOTo1ZDo4NDpiOTo4OTo0YjpkZDpl\nMzo4ODpiYjo5YzplMjpiMjo2OTo4MToxZjo0YjphNjpmZDo0ZDpkZjplZTo3NDo2\nMzpmMzo3NDo1NTpjYTpiMDpiNTo2NTA/BgNVHREEODA2hjRzcGlmZmU6Ly83ZjQy\nZjQ5Ni1mYmM3LTg2OTItMDVlZC0zMzRhYTUzNDBjMWUuY29uc3VsMD0GA1UdHgEB\n/wQzMDGgLzAtgis3ZjQyZjQ5Ni1mYmM3LTg2OTItMDVlZC0zMzRhYTUzNDBjMWUu\nY29uc3VsMAoGCCqGSM49BAMCA0gAMEUCIBBBDOWXWApx4S6bHJ49AW87Nw8uQ/gJ\nJ6lvm3HzEQw2AiEA4PVqWt+z8fsQht0cACM42kghL97SgDSf8rgCqfLYMng=\n-----END CERTIFICATE-----\n",
"IntermediateCerts": null,
"Active": true,
"PrivateKeyType": "ec",
"PrivateKeyBits": 256,
"CreateIndex": 8,
"ModifyIndex": 8
}
]
}
```
### Sample PEM Encoded Response
```
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
```
## Get CA Configuration
This endpoint returns the current CA configuration.
| Method | Path | Produces |
| ------ | --------------------------- | ------------------ |
| `GET` | `/connect/ca/configuration` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/features/blocking),
[consistency modes](/api/features/consistency),
[agent caching](/api/features/caching), and
[required ACLs](/api#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ----------------------------- |
| `YES` | `all` | `none` | `operator:write` 1 |
1 ACL required was operator:read prior to versions 1.8.6,
1.7.10, and 1.6.10.
<<<<<<< HEAD
-> The corresponding CLI command is [`consul connect ca get-config`](/commands/connect/ca#get-config).
=======
-> The corresponding CLI command is [`consul connect ca get-config`](https://www.consul.io/commands/connect/ca#get-config)
>>>>>>> f3587417d0a80537b28263338c32bfd840714733
### Sample Request
```shell-session
$ curl \
http://127.0.0.1:8500/v1/connect/ca/configuration
```
### Sample Response
```json
{
"Provider": "consul",
"Config": {
"LeafCertTTL": "72h",
"IntermediateCertTTL": "8760h"
},
"CreateIndex": 5,
"ModifyIndex": 5
}
```
## Update CA Configuration
This endpoint updates the configuration for the CA. If this results in a
new root certificate being used, the [Root Rotation](/docs/connect/ca#root-certificate-rotation) process will be triggered.
| Method | Path | Produces |
| ------ | --------------------------- | ------------------ |
| `PUT` | `/connect/ca/configuration` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/features/blocking),
[consistency modes](/api/features/consistency),
[agent caching](/api/features/caching), and
[required ACLs](/api#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ---------------- |
| `NO` | `none` | `none` | `operator:write` |
<<<<<<< HEAD
-> The corresponding CLI command is [`consul connect ca set-config`](/commands/connect/ca#set-config).
=======
-> The corresponding CLI command is [`consul connect ca set-config`](https://www.consul.io/commands/connect/ca#set-config)
>>>>>>> f3587417d0a80537b28263338c32bfd840714733
### Parameters
- `Provider` `(string: )` - Specifies the CA provider type to use.
- `Config` `(map[string]string: )` - The raw configuration to use
for the chosen provider. For more information on configuring the Connect CA
providers, see [Provider Config](/docs/connect/ca).
- `ForceWithoutCrossSigning` `(bool: )` - Indicates that the CA change
should be forced to complete even if the current CA doesn't support cross
signing. Changing root without cross-signing may cause temporary connection
failures until the rollout completes. See [Forced Rotation Without
Cross-Signing](/docs/connect/ca#forced-rotation-without-cross-signing)
for more detail.
### Sample Payload
```json
{
"Provider": "consul",
"Config": {
"LeafCertTTL": "72h",
"PrivateKey": "-----BEGIN RSA PRIVATE KEY-----...",
"RootCert": "-----BEGIN CERTIFICATE-----...",
"IntermediateCertTTL": "8760h"
},
"ForceWithoutCrossSigning": false
}
```
### Sample Request
```shell-session
$ curl \
--request PUT \
--data @payload.json \
http://127.0.0.1:8500/v1/connect/ca/configuration
```