# Subscribe Signal

## POST /v1/signals/{id}/subscribe

> Subscribe to a Signal.

```json
{"openapi":"3.0.1","info":{"title":"Agent API","version":"25.8.1"},"servers":[{"url":"youragentURL.symphony.com/agent"}],"paths":{"/v1/signals/{id}/subscribe":{"post":{"tags":["Signals"],"summary":"Subscribe to a Signal.","parameters":[{"name":"sessionToken","in":"header","description":"Session authentication token.","required":true,"schema":{"type":"string"}},{"name":"keyManagerToken","in":"header","description":"Key Manager authentication token.","schema":{"type":"string"}},{"name":"id","in":"path","description":"The id of the signal.","required":true,"schema":{"type":"string"}},{"name":"pushed","in":"query","description":"Prevent the user to unsubscribe (only for bulk subscription)","schema":{"type":"boolean"}}],"requestBody":{"description":"UserIds to subscribe (only for bulk subscription)","content":{"application/json":{"schema":{"type":"array","items":{"type":"integer","format":"int64"}}}},"required":false},"responses":{"200":{"description":"Signal subscribed.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ChannelSubscriptionResponse"}}}},"400":{"description":"Client error, see response body for further details.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/V2Error"}}}},"401":{"description":"Unauthorized: Session tokens invalid.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/V2Error"}}}},"403":{"description":"Forbidden: Caller lacks necessary entitlement.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/V2Error"}}}},"500":{"description":"Server error, see response body for further details.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/V2Error"}}}}}}}},"components":{"schemas":{"ChannelSubscriptionResponse":{"type":"object","properties":{"requestedSubscription":{"type":"integer","description":"The number of requested userIds to subscribe","format":"int64"},"successfulSubscription":{"type":"integer","description":"The number of successful subscriptions done","format":"int64"},"failedSubscription":{"type":"integer","description":"The number of subscription failures","format":"int64"},"subscriptionErrors":{"type":"array","items":{"$ref":"#/components/schemas/ChannelSubscriptionError"}}}},"ChannelSubscriptionError":{"type":"object","properties":{"userId":{"type":"integer","description":"The userId on which failure happened","format":"int64"},"code":{"type":"string","description":"subscription failure code"},"message":{"type":"string","description":"subscription failure message"}}},"V2Error":{"required":["code","message"],"type":"object","properties":{"code":{"type":"integer","format":"int32"},"message":{"type":"string"},"details":{"type":"object"}}}}}}
```

### Request Examples

```bash
curl -X POST \
https://acme.symphony.com/agent/v1/signals/5a6efc9db9d8210001b9960b/subscribe \
  -H 'content-type: application/json' \
  -H 'sessiontoken: SESSION_TOKEN' \
  -H 'keymanagertoken: KEYMANAGER_TOKEN' \   
  -d '[68719476759, 68719476760, 68719476761]'
```

```bash
curl -X POST
  -H 'content-type: application/json'
  -H 'sessiontoken: SESSION_TOKEN'
  -H 'keymanagertoken: KEYMANAGER_TOKEN'  
  https://acme.symphony.com/agent/v1/signals/5a6efc9db9d8210001b9960b/subscribe
```

> #### 🚧 Required Permissions
>
> To subscribe other users to a specific signal, the requesting user needs to have the `canManageSignalSubscription` entitlement.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://rest-api.symphony.com/main/signals/subscribe-signal.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.