open-nomad/website/content/api-docs/evaluations.mdx

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---
layout: api
page_title: Evaluations - HTTP API
description: The /evaluation are used to query for and interact with evaluations.
---
# Evaluations HTTP API
The `/evaluation` endpoints are used to query for and interact with evaluations.
## List Evaluations
This endpoint lists all evaluations.
| Method | Path | Produces |
| ------ | ----------------- | ------------------ |
| `GET` | `/v1/evaluations` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs#blocking-queries) and
[required ACLs](/api-docs#acls).
| Blocking Queries | ACL Required |
| ---------------- | -------------------- |
| `YES` | `namespace:read-job` |
### Parameters
- `prefix` `(string: "")`- Specifies a string to filter evaluations based on an
ID prefix. Because the value is decoded to bytes, the prefix must have an
even number of hexadecimal characters (0-9a-f). This is specified as a query
string parameter.
- `next_token` `(string: "")` - This endpoint supports paging. The
`next_token` parameter accepts a string which is the `ID` field of
the next expected evaluation. This value can be obtained from the
`X-Nomad-NextToken` header from the previous response.
- `per_page` `(int: 0)` - Specifies a maximum number of evaluations to
return for this request. If omitted, the response is not
paginated. The `ID` of the last evaluation in the response can be
used as the `last_token` of the next request to fetch additional
pages.
- `job` `(string: "")` - Filter the list of evaluations to a specific
job ID.
- `status` `(string: "")` - Filter the list of evaluations to a
specific evaluation status (one of `blocked`, `pending`, `complete`,
`failed`, or `canceled`).
- `namespace` `(string: "default")` - Specifies the target
namespace. Specifying `*` will return all evaluations across all
authorized namespaces.
### Sample Request
```shell-session
$ curl \
https://localhost:4646/v1/evaluations
```
```shell-session
$ curl \
https://localhost:4646/v1/evaluations?prefix=25ba81
```
### Sample Response
```json
[
{
"ID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577",
"Priority": 50,
"Type": "service",
"TriggeredBy": "job-register",
"JobID": "example",
"JobModifyIndex": 52,
"NodeID": "",
"NodeModifyIndex": 0,
"Status": "complete",
"StatusDescription": "",
"Wait": 0,
"NextEval": "",
"PreviousEval": "",
"BlockedEval": "",
"FailedTGAllocs": null,
"ClassEligibility": null,
"EscapedComputedClass": false,
"AnnotatePlan": false,
"SnapshotIndex": 53,
"QueuedAllocations": {
"cache": 0
},
"CreateIndex": 53,
"ModifyIndex": 55
}
]
```
## Read Evaluation
This endpoint reads information about a specific evaluation by ID.
| Method | Path | Produces |
| ------ | ------------------------- | ------------------ |
| `GET` | `/v1/evaluation/:eval_id` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs#blocking-queries) and
[required ACLs](/api-docs#acls).
| Blocking Queries | ACL Required |
| ---------------- | -------------------- |
| `YES` | `namespace:read-job` |
### Parameters
- `:eval_id` `(string: <required>)`- Specifies the UUID of the evaluation. This
must be the full UUID, not the short 8-character one. This is specified as
part of the path.
### Sample Request
```shell-session
$ curl \
https://localhost:4646/v1/evaluation/5456bd7a-9fc0-c0dd-6131-cbee77f57577
```
### Sample Response
```json
{
"ID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577",
"Priority": 50,
"Type": "service",
"TriggeredBy": "job-register",
"JobID": "example",
"JobModifyIndex": 52,
"NodeID": "",
"NodeModifyIndex": 0,
"Status": "complete",
"StatusDescription": "",
"Wait": 0,
"NextEval": "",
"PreviousEval": "",
"BlockedEval": "",
"FailedTGAllocs": null,
"ClassEligibility": null,
"EscapedComputedClass": false,
"AnnotatePlan": false,
"SnapshotIndex": 53,
"QueuedAllocations": {
"cache": 0
},
"CreateIndex": 53,
"ModifyIndex": 55
}
```
## List Allocations for Evaluation
This endpoint lists the allocations created or modified for the given
evaluation.
| Method | Path | Produces |
| ------ | ------------------------------------- | ------------------ |
| `GET` | `/v1/evaluation/:eval_id/allocations` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api-docs#blocking-queries) and
[required ACLs](/api-docs#acls).
| Blocking Queries | ACL Required |
| ---------------- | -------------------- |
| `YES` | `namespace:read-job` |
### Parameters
- `:eval_id` `(string: <required>)`- Specifies the UUID of the evaluation. This
must be the full UUID, not the short 8-character one. This is specified as
part of the path.
### Sample Request
```shell-session
$ curl \
https://localhost:4646/v1/evaluation/5456bd7a-9fc0-c0dd-6131-cbee77f57577/allocations
```
### Sample Response
```json
[
{
"ID": "a8198d79-cfdb-6593-a999-1e9adabcba2e",
"EvalID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577",
"Name": "example.cache[0]",
"NodeID": "fb2170a8-257d-3c64-b14d-bc06cc94e34c",
"JobID": "example",
"TaskGroup": "cache",
"DesiredStatus": "run",
"DesiredDescription": "",
"ClientStatus": "running",
"ClientDescription": "",
"TaskStates": {
"redis": {
"State": "running",
"Failed": false,
"Events": [
{
"Type": "Received",
"Time": 1495747371795703800,
"FailsTask": false,
"RestartReason": "",
"SetupError": "",
"DriverError": "",
"ExitCode": 0,
"Signal": 0,
"Message": "",
"KillTimeout": 0,
"KillError": "",
"KillReason": "",
"StartDelay": 0,
"DownloadError": "",
"ValidationError": "",
"DiskLimit": 0,
"FailedSibling": "",
"VaultError": "",
"TaskSignalReason": "",
"TaskSignal": "",
"DriverMessage": ""
},
{
"Type": "Driver",
"Time": 1495747371798867200,
"FailsTask": false,
"RestartReason": "",
"SetupError": "",
"DriverError": "",
"ExitCode": 0,
"Signal": 0,
"Message": "",
"KillTimeout": 0,
"KillError": "",
"KillReason": "",
"StartDelay": 0,
"DownloadError": "",
"ValidationError": "",
"DiskLimit": 0,
"FailedSibling": "",
"VaultError": "",
"TaskSignalReason": "",
"TaskSignal": "",
"DriverMessage": "Downloading image redis:3.2"
},
{
"Type": "Started",
"Time": 1495747379525667800,
"FailsTask": false,
"RestartReason": "",
"SetupError": "",
"DriverError": "",
"ExitCode": 0,
"Signal": 0,
"Message": "",
"KillTimeout": 0,
"KillError": "",
"KillReason": "",
"StartDelay": 0,
"DownloadError": "",
"ValidationError": "",
"DiskLimit": 0,
"FailedSibling": "",
"VaultError": "",
"TaskSignalReason": "",
"TaskSignal": "",
"DriverMessage": ""
}
]
}
},
"CreateIndex": 54,
"ModifyIndex": 57,
"CreateTime": 1495747371794276400
}
]
```