---
layout: api
page_title: ACL Tokens - HTTP API
description: The /acl/token endpoints manage Consul's ACL Tokens.
---
# ACL Token HTTP API
-> **1.4.0+:** The APIs are available in Consul versions 1.4.0 and later. The documentation for the legacy ACL API is [here](/api-docs/acl/legacy).
The `/acl/token` endpoints [create](#create-a-token), [read](#read-a-token),
[update](#update-a-token), [list](#list-tokens), [clone](#clone-a-token) and [delete](#delete-a-token) ACL tokens in Consul.
For more information on how to setup ACLs, please check
the [ACL tutorial](https://learn.hashicorp.com/tutorials/consul/access-control-setup-production).
## Create a Token
This endpoint creates a new ACL token.
| Method | Path | Produces |
| ------ | ------------ | ------------------ |
| `PUT` | `/acl/token` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs/features/blocking),
[consistency modes](/api-docs/features/consistency),
[agent caching](/api-docs/features/caching), and
[required ACLs](/api-docs#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `NO` | `none` | `none` | `acl:write` |
The corresponding CLI command is [`consul acl token create`](/commands/acl/token/create).
### Query Parameters
- `ns` `(string: "")` - Specifies the namespace of the token you create.
You can also [specify the namespace through other methods](#methods-to-specify-namespace).
### JSON Request Body Schema
- `AccessorID` `(string: "")` - Specifies a UUID to use as the token's Accessor ID.
If not specified a UUID will be generated for this field. Added in v1.5.0.
- `SecretID` `(string: "")` - Specifies a UUID to use as the token's Secret ID.
If not specified a UUID will be generated for this field. Added in v1.5.0.
**Note**: The SecretID is used to authorize operations against Consul and should
be generated from an appropriate cryptographic source.
- `Description` `(string: "")` - Free form human readable description of the token.
- `Policies` `(array)` - The list of policies that should be
applied to the token. A PolicyLink is an object with an "ID" and/or "Name"
field to specify a policy. With the PolicyLink, tokens can be linked to
policies either by the policy name or by the policy ID. When policies are
linked by name they will be internally resolved to the policy ID. With
linking tokens internally by IDs, Consul enables policy renaming without
breaking tokens.
- `Roles` `(array)` - The list of roles that should be applied to the
token. A RoleLink is an object with an "ID" and/or "Name" field to specify a
role. With the RoleLink, tokens can be linked to roles either by the role
name or by the role ID. When roles are linked by name they will be internally
resolved to the role ID. With linking tokens internally by IDs, Consul
enables role renaming without breaking tokens. Added in Consul 1.5.0.
- `ServiceIdentities` `(array)` - The list of [service
identities](/docs/security/acl#service-identities) that should be
applied to the token. Added in Consul 1.5.0.
- `ServiceName` `(string: )` - The name of the service. The name
must be no longer than 256 characters, must start and end with a lowercase
alphanumeric character, and can only contain lowercase alphanumeric
characters as well as `-` and `_`.
- `Datacenters` `(array)` - Specifies the datacenters the effective
policy is valid within. When no datacenters are provided the effective
policy is valid in all datacenters including those which do not yet exist
but may in the future.
- `NodeIdentities` `(array)` - The list of [node
identities](/docs/security/acl#node-identities) that should be
applied to the token. Added in Consul 1.8.1.
- `NodeName` `(string: )` - The name of the node. The name
must be no longer than 256 characters, must start and end with a lowercase
alphanumeric character, and can only contain lowercase alphanumeric
characters as well as `-` and `_`.
- `Datacenter` `(string: )` - Specifies the nodes datacenter. This
will result in effective policy only being valid in that datacenter.
- `Local` `(bool: false)` - If true, indicates that the token should not be
replicated globally and instead be local to the current datacenter.
- `ExpirationTime` `(time: "")`- If set this represents the point after which a
token should be considered revoked and is eligible for destruction. The
default unset value represents NO expiration. This value must be between 1
minute and 24 hours in the future. Added in Consul 1.5.0.
- `ExpirationTTL` `(duration: 0s)` - This is a convenience field and if set
will initialize the `ExpirationTime` field to a value of `CreateTime + ExpirationTTL`. This field is not persisted beyond its initial use. Can be
specified in the form of `"60s"` or `"5m"` (i.e., 60 seconds or 5 minutes,
respectively). This value must be no smaller than 1 minute and no longer than
24 hours. Added in Consul 1.5.0.
- `Namespace` `(string: "")` - Specifies the namespace of the token you create.
This field takes precedence over the `ns` query parameter,
one of several [other methods to specify the namespace](#methods-to-specify-namespace).
### Sample Payload
```json
{
"Description": "Agent token for 'node1'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7"
},
{
"Name": "node-read"
}
],
"Local": false
}
```
### Sample Request
```shell-session
$ curl --request PUT \
--data @payload.json \
http://127.0.0.1:8500/v1/acl/token
```
### Sample Response
```json
{
"AccessorID": "6a1253d2-1785-24fd-91c2-f8e78c745511",
"SecretID": "45a3bd52-07c7-47a4-52fd-0745e0cfe967",
"Description": "Agent token for 'node1'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7",
"Name": "node1-write"
},
{
"ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
"Name": "node-read"
}
],
"Local": false,
"CreateTime": "2018-10-24T12:25:06.921933-04:00",
"Hash": "UuiRkOQPRCvoRZHRtUxxbrmwZ5crYrOdZ0Z1FTFbTbA=",
"CreateIndex": 59,
"ModifyIndex": 59
}
```
## Read a Token
This endpoint reads an ACL token with the given Accessor ID.
| Method | Path | Produces |
| ------ | ------------------------ | ------------------ |
| `GET` | `/acl/token/:AccessorID` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs/features/blocking),
[consistency modes](/api-docs/features/consistency),
[agent caching](/api-docs/features/caching), and
[required ACLs](/api-docs#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `YES` | `all` | `none` | `acl:read` |
The corresponding CLI command is [`consul acl token read`](/commands/acl/token/read).
### Path Parameters
- `AccessorID` `(string: )` - Specifies the accessor ID of the token you lookup.
### Query Parameters
- `ns` `(string: "")` - Specifies the namespace of the token you lookup.
You can also [specify the namespace through other methods](#methods-to-specify-namespace).
- `expanded` `(bool: false)` - If this field is set, the contents of all policies and
roles affecting the token will also be returned.
### Sample Request
```shell-session
$ curl --request GET http://127.0.0.1:8500/v1/acl/token/6a1253d2-1785-24fd-91c2-f8e78c745511
```
### Sample Response
-> **Note** If the token used for accessing the API has `acl:write` permissions,
then the `SecretID` will contain the tokens real value. Only when accessed with
a token with only `acl:read` permissions will the `SecretID` be redacted. This
is to prevent privilege escalation whereby having `acl:read` privileges allows
for reading other secrets which given even more permissions.
```json
{
"AccessorID": "6a1253d2-1785-24fd-91c2-f8e78c745511",
"SecretID": "",
"Description": "Agent token for 'node1'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7",
"Name": "node1-write"
},
{
"ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
"Name": "node-read"
}
],
"Local": false,
"CreateTime": "2018-10-24T12:25:06.921933-04:00",
"Hash": "UuiRkOQPRCvoRZHRtUxxbrmwZ5crYrOdZ0Z1FTFbTbA=",
"CreateIndex": 59,
"ModifyIndex": 59
}
```
Sample response when setting the `expanded` parameter:
```json
{
"AccessorID": "fbd2447f-7479-4329-ad13-b021d74f86ba",
"SecretID": "869c6e91-4de9-4dab-b56e-87548435f9c6",
"Description": "test token",
"Policies": [
{
"ID": "beb04680-815b-4d7c-9e33-3d707c24672c",
"Name": "foo"
},
{
"ID": "18788457-584c-4812-80d3-23d403148a90",
"Name": "bar"
}
],
"Local": false,
"CreateTime": "2020-05-22T18:52:31Z",
"Hash": "YWJjZGVmZ2g=",
"ExpandedPolicies": [
{
"ID": "beb04680-815b-4d7c-9e33-3d707c24672c",
"Name": "foo",
"Description": "user policy on token",
"Rules": "service_prefix \"\" {\n policy = \"read\"\n}",
"Datacenters": null,
"Hash": null,
"CreateIndex": 0,
"ModifyIndex": 0
},
{
"ID": "18788457-584c-4812-80d3-23d403148a90",
"Name": "bar",
"Description": "other user policy on token",
"Rules": "operator = \"read\"",
"Datacenters": null,
"Hash": null,
"CreateIndex": 0,
"ModifyIndex": 0
},
{
"ID": "6204f4cd-4709-441c-ac1b-cb029e940263",
"Name": "admin policy",
"Description": "policy for admin role",
"Rules": "operator = \"write\"",
"Datacenters": null,
"Hash": null,
"CreateIndex": 0,
"ModifyIndex": 0
}
],
"ExpandedRoles": [
{
"ID": "3b0a78fe-b9c3-40de-b8ea-7d4d6674b366",
"Name": "admin",
"Description": "admin role",
"Policies": [
{
"ID": "6204f4cd-4709-441c-ac1b-cb029e940263",
"Name": "admin policy"
}
],
"ServiceIdentities": [
{
"ServiceName": "web",
"Datacenters": [
"southwest"
]
}
],
"Hash": null,
"CreateIndex": 0,
"ModifyIndex": 0
}
],
"NamespaceDefaultPolicies": null,
"NamespaceDefaultRoles": null,
"AgentACLDefaultPolicy": "allow",
"AgentACLDownPolicy": "deny",
"ResolvedByAgent": "server-1",
"CreateIndex": 42,
"ModifyIndex": 100
}
```
## Read Self Token
This endpoint returns the ACL token details that matches the secret ID
specified with the `X-Consul-Token` header or the `token` query parameter.
| Method | Path | Produces |
| ------ | ----------------- | ------------------ |
| `GET` | `/acl/token/self` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs/features/blocking),
[consistency modes](/api-docs/features/consistency),
[agent caching](/api-docs/features/caching), and
[required ACLs](/api-docs#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `YES` | `all` | `none` | `none` |
-> **Note** - This endpoint requires no specific privileges as it is just
retrieving the data for a token that you must already possess its secret.
The corresponding CLI command is [`consul acl token read -self`](/commands/acl/token/read#self).
### Sample Request
```shell-session
$ curl --header "X-Consul-Token: 6a1253d2-1785-24fd-91c2-f8e78c745511" \
http://127.0.0.1:8500/v1/acl/token/self
```
### Sample Response
```json
{
"AccessorID": "6a1253d2-1785-24fd-91c2-f8e78c745511",
"SecretID": "45a3bd52-07c7-47a4-52fd-0745e0cfe967",
"Description": "Agent token for 'node1'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7",
"Name": "node1-write"
},
{
"ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
"Name": "node-read"
}
],
"Local": false,
"CreateTime": "2018-10-24T12:25:06.921933-04:00",
"Hash": "UuiRkOQPRCvoRZHRtUxxbrmwZ5crYrOdZ0Z1FTFbTbA=",
"CreateIndex": 59,
"ModifyIndex": 59
}
```
## Update a Token
This endpoint updates an existing ACL token.
| Method | Path | Produces |
| ------ | ------------------------ | ------------------ |
| `PUT` | `/acl/token/:AccessorID` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs/features/blocking),
[consistency modes](/api-docs/features/consistency),
[agent caching](/api-docs/features/caching), and
[required ACLs](/api-docs#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `NO` | `none` | `none` | `acl:write` |
The corresponding CLI command is [`consul acl token update`](/commands/acl/token/update).
### Path Parameters
- `AccessorID` `(string: )` - Specifies the accessor ID of the token you update.
### Query Parameters
- `ns` `(string: "")` - Specifies the namespace of the token you update.
You can also [specify the namespace through other methods](#methods-to-specify-namespace).
### JSON Request Body Schema
- `AccessorID` `(string: "")` - Specifies the accessor ID of the token being updated.
This field is required in the URL path but may also be specified in the JSON body.
If specified in both places then they must be an exact match.
This field is immutable. If not present in
the body and only in the URL then it will be filled in by Consul.
- `SecretID` `(string: "")` - Specifies the secret ID of the token being updated. This field is
immutable so if present in the body then it must match the existing value. If not present
then the value will be filled in by Consul.
- `Description` `(string: "")` - Free form human readable description of this token.
- `Policies` `(array)` - This is the list of policies that should
be applied to this token. A PolicyLink is an object with an "ID" and/or
"Name" field to specify a policy. With the PolicyLink tokens can be linked to policies
either by the policy name or by the policy ID. When policies are linked by
name they will internally be resolved to the policy ID. With linking tokens
internally by IDs, Consul enables policy renaming without breaking tokens.
- `Roles` `(array)` - The list of roles that should be applied to the
token. A RoleLink is an object with an "ID" and/or "Name" field to specify a
role. With the RoleLink, tokens can be linked to roles either by the role
name or by the role ID. When roles are linked by name they will be internally
resolved to the role ID. With linking tokens internally by IDs, Consul
enables role renaming without breaking tokens.
- `ServiceIdentities` `(array)` - The list of [service
identities](/docs/security/acl#service-identities) that should be
applied to the token. Added in Consul 1.5.0.
- `ServiceName` `(string: )` - The name of the service. The name
must be no longer than 256 characters, must start and end with a lowercase
alphanumeric character, and can only contain lowercase alphanumeric
characters as well as `-` and `_`.
- `Datacenters` `(array)` - Specifies the datacenters the effective
policy is valid within. When no datacenters are provided the effective
policy is valid in all datacenters including those which do not yet exist
but may in the future.
- `NodeIdentities` `(array)` - The list of [node
identities](/docs/security/acl#node-identities) that should be
applied to the token. Added in Consul 1.8.1.
- `NodeName` `(string: )` - The name of the node. The name
must be no longer than 256 characters, must start and end with a lowercase
alphanumeric character, and can only contain lowercase alphanumeric
characters as well as `-` and `_`.
- `Datacenter` `(string: )` - Specifies the nodes datacenter. This
will result in effective policy only being valid in that datacenter.
- `Local` `(bool: false)` - If true, indicates that this token should not be
replicated globally and instead be local to the current datacenter. This
value must match the existing value or the request will return an error.
- `AuthMethod` `(string: "")` - Specifies the name of the auth method that
created this token. This field is immutable so if present in the body then it
must match the existing value. If not present then the value will be filled
in by Consul.
- `ExpirationTime` `(time: "")` - Specifies the expiration time for the token
being updated. This field is immutable so if present in the body then it must
match the existing value. If not present then the value will be filled in by
Consul.
- `Namespace` `(string: "")` - Specifies the namespace of the token you update.
This field takes precedence over the `ns` query parameter,
one of several [other methods to specify the namespace](#methods-to-specify-namespace).
### Sample Payload
```json
{
"Description": "Agent token for 'node1'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7"
},
{
"Name": "node-read"
},
{
"Name": "service-read"
}
],
"Local": false
}
```
### Sample Request
```shell-session
$ curl --request PUT \
--data @payload.json \
http://127.0.0.1:8500/v1/acl/token/6a1253d2-1785-24fd-91c2-f8e78c745511
```
### Sample Response
```json
{
"AccessorID": "6a1253d2-1785-24fd-91c2-f8e78c745511",
"SecretID": "45a3bd52-07c7-47a4-52fd-0745e0cfe967",
"Description": "Agent token for 'node1'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7",
"Name": "node1-write"
},
{
"ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
"Name": "node-read"
},
{
"ID": "93d2226b-2046-4db1-993b-c0581b5d2391",
"Name": "service-read"
}
],
"Local": false,
"CreateTime": "2018-10-24T12:25:06.921933-04:00",
"Hash": "UuiRkOQPRCvoRZHRtUxxbrmwZ5crYrOdZ0Z1FTFbTbA=",
"CreateIndex": 59,
"ModifyIndex": 100
}
```
## Clone a Token
This endpoint clones an existing ACL token.
| Method | Path | Produces |
| ------ | ------------------------------ | ------------------ |
| `PUT` | `/acl/token/:AccessorID/clone` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs/features/blocking),
[consistency modes](/api-docs/features/consistency),
[agent caching](/api-docs/features/caching), and
[required ACLs](/api-docs#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `NO` | `none` | `none` | `acl:write` |
The corresponding CLI command is [`consul acl token clone`](/commands/acl/token/clone).
### Path Parameters
- `AccessorID` `(string: )` - The accessor ID of the token to clone.
### Query Parameters
- `ns` `(string: "")` - Specifies the namespace of the token you clone.
You can also [specify the namespace through other methods](#methods-to-specify-namespace).
### JSON Request Body Schema
- `Description` `(string: "")` - Free form human readable description for the cloned token.
- `Namespace` `(string: "")` - Specifies the namespace of the token you clone.
This field takes precedence over the `ns` query parameter,
one of several [other methods to specify the namespace](#methods-to-specify-namespace).
### Sample Payload
```json
{
"Description": "Clone of Agent token for 'node1'"
}
```
### Sample Request
```shell-session
$ curl --request PUT \
--data @payload.json \
http://127.0.0.1:8500/v1/acl/token/6a1253d2-1785-24fd-91c2-f8e78c745511/clone
```
### Sample Response
```json
{
"AccessorID": "773efe2a-1f6f-451f-878c-71be10712bae",
"SecretID": "8b1247ef-d172-4f99-b050-4dbe5d3df0cb",
"Description": "Clone of Agent token for 'node1'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7",
"Name": "node1-write"
},
{
"ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
"Name": "node-read"
},
{
"ID": "93d2226b-2046-4db1-993b-c0581b5d2391",
"Name": "service-read"
}
],
"Local": false,
"CreateTime": "2018-10-24T12:25:06.921933-04:00",
"Hash": "UuiRkOQPRCvoRZHRtUxxbrmwZ5crYrOdZ0Z1FTFbTbA=",
"CreateIndex": 128,
"ModifyIndex": 128
}
```
## Delete a Token
This endpoint deletes an ACL token.
| Method | Path | Produces |
| -------- | ------------------------ | ------------------ |
| `DELETE` | `/acl/token/:AccessorID` | `application/json` |
Even though the return type is application/json, the value is either true or
false, indicating whether the delete succeeded.
The table below shows this endpoint's support for
[blocking queries](/api-docs/features/blocking),
[consistency modes](/api-docs/features/consistency),
[agent caching](/api-docs/features/caching), and
[required ACLs](/api-docs#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `NO` | `none` | `none` | `acl:write` |
The corresponding CLI command is [`consul acl token delete`](/commands/acl/token/delete).
### Path Parameters
- `AccessorID` `(string: )` - Specifies the accessor ID of the ACL token to delete.
### Query Parameters
- `ns` `(string: "")` - Specifies the namespace of the token you delete.
You can also [specify the namespace through other methods](#methods-to-specify-namespace).
### Sample Request
```shell-session
$ curl --request DELETE \
http://127.0.0.1:8500/v1/acl/token/8f246b77-f3e1-ff88-5b48-8ec93abf3e05
```
### Sample Response
```json
true
```
## List Tokens
This endpoint lists all the ACL tokens.
| Method | Path | Produces |
| ------ | ------------- | ------------------ |
| `GET` | `/acl/tokens` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs/features/blocking),
[consistency modes](/api-docs/features/consistency),
[agent caching](/api-docs/features/caching), and
[required ACLs](/api-docs#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `YES` | `all` | `none` | `acl:read` |
The corresponding CLI command is [`consul acl token list`](/commands/acl/token/list).
## Query Parameters
- `policy` `(string: "")` - Filters the token list to those tokens that are
linked with this specific policy ID.
- `role` `(string: "")` - Filters the token list to those tokens that are
linked with this specific role ID.
- `authmethod` `(string: "")` - Filters the token list to those tokens that are
linked with this specific named auth method.
- `authmethod-ns` `(string: "")` - Specifies the namespace of the
`authmethod` used for token lookup. If not provided, the namespace
provided by the `ns` parameter or [through other methods](#methods-to-specify-namespace) will be used.
- `ns` `(string: "")` - Return only the tokens in the specified namespace.
The namespace may be specified as '\*' to return results for all namespaces.
You can also [specify the namespace through other methods](#methods-to-specify-namespace).
## Sample Request
```shell-session
$ curl --request GET http://127.0.0.1:8500/v1/acl/tokens
```
### Sample Response
-> **Note** If the token used for accessing the API has `acl:write` permissions,
then the `SecretID` will contain the tokens real value. Only when accessed with
a token with only `acl:read` permissions will the `SecretID` be redacted. This
is to prevent privilege escalation whereby having `acl:read` privileges allows
for reading other secrets which given even more permissions.
```json
[
{
"AccessorID": "6a1253d2-1785-24fd-91c2-f8e78c745511",
"SecretID": "",
"Description": "Agent token for 'my-agent'",
"Policies": [
{
"ID": "165d4317-e379-f732-ce70-86278c4558f7",
"Name": "node1-write"
},
{
"ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
"Name": "node-read"
}
],
"Local": false,
"CreateTime": "2018-10-24T12:25:06.921933-04:00",
"Hash": "UuiRkOQPRCvoRZHRtUxxbrmwZ5crYrOdZ0Z1FTFbTbA=",
"CreateIndex": 59,
"ModifyIndex": 59
},
{
"AccessorID": "00000000-0000-0000-0000-000000000002",
"SecretID": "",
"Description": "Anonymous Token",
"Policies": null,
"Local": false,
"CreateTime": "0001-01-01T00:00:00Z",
"Hash": "RNVFSWnfd5DUOuB8vplp+imivlIna3fKQVnkUHh21cA=",
"CreateIndex": 5,
"ModifyIndex": 5
},
{
"AccessorID": "3328f9a6-433c-02d0-6649-7d07268dfec7",
"SecretID": "",
"Description": "Bootstrap Token (Global Management)",
"Policies": [
{
"ID": "00000000-0000-0000-0000-000000000001",
"Name": "global-management"
}
],
"Local": false,
"CreateTime": "2018-10-24T11:42:02.6427-04:00",
"Hash": "oyrov6+GFLjo/KZAfqgxF/X4J/3LX0435DOBy9V22I0=",
"CreateIndex": 12,
"ModifyIndex": 12
}
]
```
## Methods to Specify Namespace
ACL token endpoints
support several methods for specifying the namespace of the ACL token resources
with the following order of precedence:
1. `Namespace` field of the JSON request body -
only applies to [create](#create-a-token) and [update](#update-a-token) endpoints
1. `ns` query parameter
1. `X-Consul-Namespace` request header
1. Namespace is inherited from the namespace of the request's ACL token (if any)
1. The `default` namespace