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---
layout: api
page_title: ACL Binding Rules - HTTP API
sidebar_title: 'Binding Rules'
sidebar_current: api-acl-binding-rules
description: The /acl/binding-rule endpoints manage Consul's ACL Binding Rules.
---
# ACL Binding Rule HTTP API
-> **1.5.0+:** The binding rule APIs are available in Consul versions 1.5.0 and newer.
The `/acl/binding-rule` endpoints [create](#create-a-binding-rule),
[read](#read-a-binding-rule), [update](#update-a-binding-rule),
[list](#list-binding-rules) and [delete](#delete-a-binding-rule) ACL binding
rules in Consul.
For more information on how to setup ACLs, please see
the [ACL Guide](https://learn.hashicorp.com/consul/advanced/day-1-operations/production-acls).
## Create a Binding Rule
This endpoint creates a new ACL binding rule.
| Method | Path | Produces |
| ------ | ------------------- | ------------------ |
| `PUT` | `/acl/binding-rule` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/features/blocking.html),
[consistency modes](/api/features/consistency.html),
[agent caching](/api/features/caching.html), and
[required ACLs](/api/index.html#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `NO` | `none` | `none` | `acl:write` |
### Parameters
- `Description` `(string: "")` - Free form human readable description of the binding rule.
- `AuthMethod` `(string: <required>)` - The name of the auth method that this
rule applies to. This field is immutable.
- `Selector` `(string: "")` - Specifies the expression used to match this rule
against valid identities returned from an auth method validation. If empty
this binding rule matches all valid identities returned from the auth method. For example:
```text
serviceaccount.namespace==default and serviceaccount.name!=vault
```
- `BindType` `(string: <required>)` - Specifies the way the binding rule
affects a token created at login.
- `BindType=service` - The computed bind name value is used as an
`ACLServiceIdentity.ServiceName` field in the token that is created.
```json
{ ...other fields...
"ServiceIdentities": [
{ "ServiceName": "<computed BindName>" }
]
}
```
- `BindType=role` - The computed bind name value is used as a `RoleLink.Name`
field in the token that is created. This binding rule will only apply if a
role with the given name exists at login-time. If it does not then this
rule is ignored.
```json
{ ...other fields...
"Roles": [
{ "Name": "<computed BindName>" }
]
}
```
- `BindName` `(string: <required>)` - The name to bind to a token at
login-time. What it binds to can be adjusted with different values of the
`BindType` field. This can either be a plain string or lightly templated
using [HIL syntax](https://github.com/hashicorp/hil) to interpolate the same
values that are usable by the `Selector` syntax. For example:
```text
prefixed-${serviceaccount.name}
```
- `Namespace` `(string: "")` - **(Enterprise Only)** Specifies the namespace to
create the binding rule. If not provided in the JSON body, the value of
the `ns` URL query parameter or in the `X-Consul-Namespace` header will be used.
If not provided at all, the namespace will be inherited from the request's ACL
token or will default to the `default` namespace. Added in Consul 1.7.0.
### Sample Payload
```json
{
"Description": "example rule",
"AuthMethod": "minikube",
"Selector": "serviceaccount.namespace==default",
"BindType": "service",
"BindName": "{{ serviceaccount.name }}"
}
```
### Sample Request
```sh
$ curl -X PUT \
--data @payload.json \
http://127.0.0.1:8500/v1/acl/binding-rule
```
### Sample Response
```json
{
"ID": "000ed53c-e2d3-e7e6-31a5-c19bc3518a3d",
"Description": "example rule",
"AuthMethod": "minikube",
"Selector": "serviceaccount.namespace==default",
"BindType": "service",
"BindName": "{{ serviceaccount.name }}",
"CreateIndex": 17,
"ModifyIndex": 17
}
```
## Read a Binding Rule
This endpoint reads an ACL binding rule with the given ID. If no
binding rule exists with the given ID, a 404 is returned instead of a 200
response.
| Method | Path | Produces |
| ------ | ----------------------- | ------------------ |
| `GET` | `/acl/binding-rule/:id` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/features/blocking.html),
[consistency modes](/api/features/consistency.html),
[agent caching](/api/features/caching.html), and
[required ACLs](/api/index.html#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `YES` | `all` | `none` | `acl:read` |
### Parameters
- `id` `(string: <required>)` - Specifies the UUID of the ACL binding rule
to read. This is required and is specified as part of the URL path.
- `ns` `(string: "")` - **(Enterprise Only)** Specifies the namespace to lookup
the binding rule. This value can be specified as the `ns` URL query
parameter or the `X-Consul-Namespace` header. If not provided by either,
the namespace will be inherited from the request's ACL token or will default
to the `default` namespace. Added in Consul 1.7.0.
### Sample Request
```sh
$ curl -X GET http://127.0.0.1:8500/v1/acl/binding-rule/000ed53c-e2d3-e7e6-31a5-c19bc3518a3d
```
### Sample Response
```json
{
"ID": "000ed53c-e2d3-e7e6-31a5-c19bc3518a3d",
"Description": "example rule",
"AuthMethod": "minikube",
"Selector": "serviceaccount.namespace==default",
"BindType": "service",
"BindName": "{{ serviceaccount.name }}",
"CreateIndex": 17,
"ModifyIndex": 17
}
```
## Update a Binding Rule
This endpoint updates an existing ACL binding rule.
| Method | Path | Produces |
| ------ | ----------------------- | ------------------ |
| `PUT` | `/acl/binding-rule/:id` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/features/blocking.html),
[consistency modes](/api/features/consistency.html),
[agent caching](/api/features/caching.html), and
[required ACLs](/api/index.html#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `NO` | `none` | `none` | `acl:write` |
### Parameters
- `ID` `(string: <required>)` - Specifies the ID of the binding rule to update.
This is required in the URL path but may also be specified in the JSON body.
If specified in both places then they must match exactly.
- `Description` `(string: "")` - Free form human readable description of the binding rule.
- `AuthMethod` `(string: <required>)` - Specifies the name of the auth
method that this rule applies to. 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.
- `Selector` `(string: "")` - Specifies the expression used to match this rule
against valid identities returned from an auth method validation. If empty
this binding rule matches all valid identities returned from the auth method. For example:
```text
serviceaccount.namespace==default and serviceaccount.name!=vault
```
- `BindType` `(string: <required>)` - Specifies the way the binding rule
affects a token created at login.
- `BindType=service` - The computed bind name value is used as an
`ACLServiceIdentity.ServiceName` field in the token that is created.
```json
{ ...other fields...
"ServiceIdentities": [
{ "ServiceName": "<computed BindName>" }
]
}
```
- `BindType=role` - The computed bind name value is used as a `RoleLink.Name`
field in the token that is created. This binding rule will only apply if a
role with the given name exists at login-time. If it does not then this
rule is ignored.
```json
{ ...other fields...
"Roles": [
{ "Name": "<computed BindName>" }
]
}
```
- `BindName` `(string: <required>)` - The name to bind to a token at
login-time. What it binds to can be adjusted with different values of the
`BindType` field. This can either be a plain string or lightly templated
using [HIL syntax](https://github.com/hashicorp/hil) to interpolate the same
values that are usable by the `Selector` syntax. For example:
```text
prefixed-${serviceaccount.name}
```
- `Namespace` `(string: "")` - **(Enterprise Only)** Specifies the namespace of
the binding rule to update. If not provided in the JSON body, the value of
the `ns` URL query parameter or in the `X-Consul-Namespace` header will be used.
If not provided at all, the namespace will be inherited from the request's ACL
token or will default to the `default` namespace. Added in Consul 1.7.0.
### Sample Payload
```json
{
"Description": "updated rule",
"Selector": "serviceaccount.namespace=dev",
"BindType": "role",
"BindName": "{{ serviceaccount.name }}"
}
```
### Sample Request
```sh
$ curl -X PUT \
--data @payload.json \
http://127.0.0.1:8500/v1/acl/binding-rule/000ed53c-e2d3-e7e6-31a5-c19bc3518a3d
```
### Sample Response
```json
{
"ID": "000ed53c-e2d3-e7e6-31a5-c19bc3518a3d",
"Description": "updated rule",
"AuthMethod": "minikube",
"Selector": "serviceaccount.namespace=dev",
"BindType": "role",
"BindName": "{{ serviceaccount.name }}",
"CreateIndex": 17,
"ModifyIndex": 18
}
```
## Delete a Binding Rule
This endpoint deletes an ACL binding rule.
| Method | Path | Produces |
| -------- | ----------------------- | ------------------ |
| `DELETE` | `/acl/binding-rule/:id` | `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/features/blocking.html),
[consistency modes](/api/features/consistency.html),
[agent caching](/api/features/caching.html), and
[required ACLs](/api/index.html#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `NO` | `none` | `none` | `acl:write` |
### Parameters
- `id` `(string: <required>)` - Specifies the UUID of the ACL binding rule to
delete. This is required and is specified as part of the URL path.
- `ns` `(string: "")` - **(Enterprise Only)** Specifies the namespace of the
binding rule to delete. This value can be specified as the `ns` URL query
parameter or the `X-Consul-Namespace` header. If not provided by either,
the namespace will be inherited from the request's ACL token or will default
to the `default` namespace. Added in Consul 1.7.0.
### Sample Request
```sh
$ curl -X DELETE \
http://127.0.0.1:8500/v1/acl/binding-rule/000ed53c-e2d3-e7e6-31a5-c19bc3518a3d
```
### Sample Response
```json
true
```
## List Binding Rules
This endpoint lists all the ACL binding rules.
| Method | Path | Produces |
| ------ | -------------------- | ------------------ |
| `GET` | `/acl/binding-rules` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/features/blocking.html),
[consistency modes](/api/features/consistency.html),
[agent caching](/api/features/caching.html), and
[required ACLs](/api/index.html#authentication).
| Blocking Queries | Consistency Modes | Agent Caching | ACL Required |
| ---------------- | ----------------- | ------------- | ------------ |
| `YES` | `all` | `none` | `acl:read` |
## Parameters
- `authmethod` `(string: "")` - Filters the binding rule list to those binding
rules that are linked with the specific named auth method.
- `ns` `(string: "")` - **(Enterprise Only)** Specifies the namespace to list
the binding rules for. This value can be specified as the `ns` URL query
parameter or the `X-Consul-Namespace` header. If not provided by either,
the namespace will be inherited from the request's ACL token or will default
to the `default` namespace. The namespace may be specified as '\*' and then
results will be returned for all namespaces. Added in Consul 1.7.0.
## Sample Request
```sh
$ curl -X GET http://127.0.0.1:8500/v1/acl/binding-rules
```
### Sample Response
```json
[
{
"ID": "000ed53c-e2d3-e7e6-31a5-c19bc3518a3d",
"Description": "example 1",
"AuthMethod": "minikube-1",
"BindType": "service",
"BindName": "k8s-{{ serviceaccount.name }}",
"CreateIndex": 17,
"ModifyIndex": 17
},
{
"ID": "b4f0a0a3-69f2-7a4f-6bef-326034ace9fa",
"Description": "example 2",
"AuthMethod": "minikube-2",
"Selector": "serviceaccount.namespace==default",
"BindName": "k8s-{{ serviceaccount.name }}",
"CreateIndex": 18,
"ModifyIndex": 18
}
]
```
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