Documentation / API · Live values / Stream authorized current values and states over SSE GET Stream authorized current values and states over SSE/api/v1/live
Browser sessions and machine credentials with telemetry:read can subscribe to live data. Machine access requires the independent runtime gate and is limited to two connections per account and 64 per API process. Credentials, accounts, roles and every series are rechecked before each five-second update. Connections end after 15 minutes. Tokens in URLs are not accepted.
On this page Access and permissions Parameters and headers Request body Responses Retries and asynchronous work Request examples Related guides Browser sessions and machine credentials with telemetry:read can subscribe to live data. Machine access requires the independent runtime gate and is limited to two connections per account and 64 per API process. Credentials, accounts, roles and every series are rechecked before each five-second update. Connections end after 15 minutes. Tokens in URLs are not accepted.
Browser session: __Host-mb_session cookie.
Machine management credentials in Authorization: Bearer. Check the permissions (scopes) required by the operation.
Required machine permissions (scopes): telemetry:read Field Location Type and limits Required Meaning workspace_id URL query string; {"format":"uuid"} Yes UUID of an owned workspace. When optional, omission selects the documented default or all owned workspaces. series_ids URL query string Yes Up to 32 unique, comma-separated series UUIDs
200 · SSE event latest. data is a LiveSnapshot JSON object; transport closes when access expires. Header Type and limits Meaning Cache-Control string; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"} Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation. Content-Language string; {"enum":["en","de"]} Language of human-readable response text, resolved from Accept-Language or the documented browser preference. Technical codes and identifiers remain stable. Referrer-Policy JSON; {"enum":["strict-origin-when-cross-origin","no-referrer"]} The default referrer policy is strict-origin-when-cross-origin. Provider-login responses use no-referrer to protect login parameters. Vary string Responses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie. X-Content-Type-Options JSON; {"const":"nosniff"} The browser must use the declared content type. X-Frame-Options JSON; {"const":"DENY"} The response must not be embedded in a frame. X-Request-ID string Server-generated request identifier. Include this when reporting an error; inbound values are not trusted.
text/event-stream
Field Type and limits Required Meaning $ string Yes —
text Copy example
event: latest
data: { "values" :[], "observed_at" : "2026-09-30T10:00:00Z" }
401 · Request rejected. Inspect the stable problem code. Stable error codes invalid_credential unauthorized
Header Type and limits Meaning Cache-Control string; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"} Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation. Content-Language string; {"enum":["en","de"]} Language of human-readable response text, resolved from Accept-Language or the documented browser preference. Technical codes and identifiers remain stable. Referrer-Policy JSON; {"enum":["strict-origin-when-cross-origin","no-referrer"]} The default referrer policy is strict-origin-when-cross-origin. Provider-login responses use no-referrer to protect login parameters. Vary string Responses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie. X-Content-Type-Options JSON; {"const":"nosniff"} The browser must use the declared content type. X-Frame-Options JSON; {"const":"DENY"} The response must not be embedded in a frame. X-Request-ID string Server-generated request identifier. Include this when reporting an error; inbound values are not trusted.
application/problem+json
Field Type and limits Required Meaning $ Problem Yes — $.code string Yes Stable machine-readable error code $.detail string Yes Short localized explanation without internal error details $.instance string Yes Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource $.message string Yes Temporarily identical to detail for existing clients $.message_key string Yes Stable translation key for changing the displayed language without another request $.message_params object; {"additionalProperties":true} Yes Named, safely rendered message parameters; never arbitrary HTML $.request_id string; {"pattern":"^[0-9a-f]{32}$"} Yes Server-generated diagnostic identifier. It contains no login token or credential. $.status integer; {"maximum":599,"minimum":400} Yes — $.title string Yes Localized HTTP status title $.type string; {"const":"about:blank"} Yes —
json Copy example
{
"code" : "demo" ,
"detail" : "Demo error detail; inspect the documented code." ,
"instance" : "demo" ,
"message" : "Demo error detail; inspect the documented code." ,
"message_key" : "errors.requestFailed" ,
"message_params" : {},
"request_id" : "00000000000000000000000000000000" ,
"status" : 401,
"title" : "Demo error" ,
"type" : "about:blank"
} 403 · Request rejected. Inspect the stable problem code. Stable error codes browser_session_required csrf insufficient_scope invalid_origin
Header Type and limits Meaning Cache-Control string; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"} Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation. Content-Language string; {"enum":["en","de"]} Language of human-readable response text, resolved from Accept-Language or the documented browser preference. Technical codes and identifiers remain stable. Referrer-Policy JSON; {"enum":["strict-origin-when-cross-origin","no-referrer"]} The default referrer policy is strict-origin-when-cross-origin. Provider-login responses use no-referrer to protect login parameters. Vary string Responses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie. X-Content-Type-Options JSON; {"const":"nosniff"} The browser must use the declared content type. X-Frame-Options JSON; {"const":"DENY"} The response must not be embedded in a frame. X-Request-ID string Server-generated request identifier. Include this when reporting an error; inbound values are not trusted.
application/problem+json
Field Type and limits Required Meaning $ Problem Yes — $.code string Yes Stable machine-readable error code $.detail string Yes Short localized explanation without internal error details $.instance string Yes Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource $.message string Yes Temporarily identical to detail for existing clients $.message_key string Yes Stable translation key for changing the displayed language without another request $.message_params object; {"additionalProperties":true} Yes Named, safely rendered message parameters; never arbitrary HTML $.request_id string; {"pattern":"^[0-9a-f]{32}$"} Yes Server-generated diagnostic identifier. It contains no login token or credential. $.status integer; {"maximum":599,"minimum":400} Yes — $.title string Yes Localized HTTP status title $.type string; {"const":"about:blank"} Yes —
json Copy example
{
"code" : "demo" ,
"detail" : "Demo error detail; inspect the documented code." ,
"instance" : "demo" ,
"message" : "Demo error detail; inspect the documented code." ,
"message_key" : "errors.requestFailed" ,
"message_params" : {},
"request_id" : "00000000000000000000000000000000" ,
"status" : 403,
"title" : "Demo error" ,
"type" : "about:blank"
} 404 · Request rejected. Inspect the stable problem code. Stable error codes not_found
Header Type and limits Meaning Cache-Control string; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"} Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation. Content-Language string; {"enum":["en","de"]} Language of human-readable response text, resolved from Accept-Language or the documented browser preference. Technical codes and identifiers remain stable. Referrer-Policy JSON; {"enum":["strict-origin-when-cross-origin","no-referrer"]} The default referrer policy is strict-origin-when-cross-origin. Provider-login responses use no-referrer to protect login parameters. Vary string Responses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie. X-Content-Type-Options JSON; {"const":"nosniff"} The browser must use the declared content type. X-Frame-Options JSON; {"const":"DENY"} The response must not be embedded in a frame. X-Request-ID string Server-generated request identifier. Include this when reporting an error; inbound values are not trusted.
application/problem+json
Field Type and limits Required Meaning $ Problem Yes — $.code string Yes Stable machine-readable error code $.detail string Yes Short localized explanation without internal error details $.instance string Yes Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource $.message string Yes Temporarily identical to detail for existing clients $.message_key string Yes Stable translation key for changing the displayed language without another request $.message_params object; {"additionalProperties":true} Yes Named, safely rendered message parameters; never arbitrary HTML $.request_id string; {"pattern":"^[0-9a-f]{32}$"} Yes Server-generated diagnostic identifier. It contains no login token or credential. $.status integer; {"maximum":599,"minimum":400} Yes — $.title string Yes Localized HTTP status title $.type string; {"const":"about:blank"} Yes —
json Copy example
{
"code" : "demo" ,
"detail" : "Demo error detail; inspect the documented code." ,
"instance" : "demo" ,
"message" : "Demo error detail; inspect the documented code." ,
"message_key" : "errors.requestFailed" ,
"message_params" : {},
"request_id" : "00000000000000000000000000000000" ,
"status" : 404,
"title" : "Demo error" ,
"type" : "about:blank"
} 422 · Request rejected. Inspect the stable problem code. Stable error codes invalid_live live_limit
Header Type and limits Meaning Cache-Control string; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"} Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation. Content-Language string; {"enum":["en","de"]} Language of human-readable response text, resolved from Accept-Language or the documented browser preference. Technical codes and identifiers remain stable. Referrer-Policy JSON; {"enum":["strict-origin-when-cross-origin","no-referrer"]} The default referrer policy is strict-origin-when-cross-origin. Provider-login responses use no-referrer to protect login parameters. Vary string Responses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie. X-Content-Type-Options JSON; {"const":"nosniff"} The browser must use the declared content type. X-Frame-Options JSON; {"const":"DENY"} The response must not be embedded in a frame. X-Request-ID string Server-generated request identifier. Include this when reporting an error; inbound values are not trusted.
application/problem+json
Field Type and limits Required Meaning $ Problem Yes — $.code string Yes Stable machine-readable error code $.detail string Yes Short localized explanation without internal error details $.instance string Yes Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource $.message string Yes Temporarily identical to detail for existing clients $.message_key string Yes Stable translation key for changing the displayed language without another request $.message_params object; {"additionalProperties":true} Yes Named, safely rendered message parameters; never arbitrary HTML $.request_id string; {"pattern":"^[0-9a-f]{32}$"} Yes Server-generated diagnostic identifier. It contains no login token or credential. $.status integer; {"maximum":599,"minimum":400} Yes — $.title string Yes Localized HTTP status title $.type string; {"const":"about:blank"} Yes —
json Copy example
{
"code" : "demo" ,
"detail" : "Demo error detail; inspect the documented code." ,
"instance" : "demo" ,
"message" : "Demo error detail; inspect the documented code." ,
"message_key" : "errors.requestFailed" ,
"message_params" : {},
"request_id" : "00000000000000000000000000000000" ,
"status" : 422,
"title" : "Demo error" ,
"type" : "about:blank"
} 503 · Request rejected. Inspect the stable problem code. Stable error codes stream_unavailable unavailable feature_unavailable
Header Type and limits Meaning Cache-Control string; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"} Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation. Content-Language string; {"enum":["en","de"]} Language of human-readable response text, resolved from Accept-Language or the documented browser preference. Technical codes and identifiers remain stable. Referrer-Policy JSON; {"enum":["strict-origin-when-cross-origin","no-referrer"]} The default referrer policy is strict-origin-when-cross-origin. Provider-login responses use no-referrer to protect login parameters. Retry-After string; {"pattern":"^[0-9]+$"} Seconds before retry. Preserve supported idempotency identifiers and respect the operation’s mutation semantics. Vary string Responses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie. X-Content-Type-Options JSON; {"const":"nosniff"} The browser must use the declared content type. X-Frame-Options JSON; {"const":"DENY"} The response must not be embedded in a frame. X-Request-ID string Server-generated request identifier. Include this when reporting an error; inbound values are not trusted.
application/problem+json
Field Type and limits Required Meaning $ Problem Yes — $.code string Yes Stable machine-readable error code $.detail string Yes Short localized explanation without internal error details $.instance string Yes Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource $.message string Yes Temporarily identical to detail for existing clients $.message_key string Yes Stable translation key for changing the displayed language without another request $.message_params object; {"additionalProperties":true} Yes Named, safely rendered message parameters; never arbitrary HTML $.request_id string; {"pattern":"^[0-9a-f]{32}$"} Yes Server-generated diagnostic identifier. It contains no login token or credential. $.status integer; {"maximum":599,"minimum":400} Yes — $.title string Yes Localized HTTP status title $.type string; {"const":"about:blank"} Yes —
json Copy example
{
"code" : "demo" ,
"detail" : "Demo error detail; inspect the documented code." ,
"instance" : "demo" ,
"message" : "Demo error detail; inspect the documented code." ,
"message_key" : "errors.requestFailed" ,
"message_params" : {},
"request_id" : "00000000000000000000000000000000" ,
"status" : 503,
"title" : "Demo error" ,
"type" : "about:blank"
} 429 · Request rejected. Inspect the stable problem code. Stable error codes feature_unavailable unavailable live_capacity
Header Type and limits Meaning Cache-Control string; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"} Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation. Content-Language string; {"enum":["en","de"]} Language of human-readable response text, resolved from Accept-Language or the documented browser preference. Technical codes and identifiers remain stable. Referrer-Policy JSON; {"enum":["strict-origin-when-cross-origin","no-referrer"]} The default referrer policy is strict-origin-when-cross-origin. Provider-login responses use no-referrer to protect login parameters. Retry-After string; {"pattern":"^[0-9]+$"} Seconds before retry. Preserve supported idempotency identifiers and respect the operation’s mutation semantics. Vary string Responses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie. X-Content-Type-Options JSON; {"const":"nosniff"} The browser must use the declared content type. X-Frame-Options JSON; {"const":"DENY"} The response must not be embedded in a frame. X-Request-ID string Server-generated request identifier. Include this when reporting an error; inbound values are not trusted.
application/problem+json
Field Type and limits Required Meaning $ Problem Yes — $.code string Yes Stable machine-readable error code $.detail string Yes Short localized explanation without internal error details $.instance string Yes Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource $.message string Yes Temporarily identical to detail for existing clients $.message_key string Yes Stable translation key for changing the displayed language without another request $.message_params object; {"additionalProperties":true} Yes Named, safely rendered message parameters; never arbitrary HTML $.request_id string; {"pattern":"^[0-9a-f]{32}$"} Yes Server-generated diagnostic identifier. It contains no login token or credential. $.status integer; {"maximum":599,"minimum":400} Yes — $.title string Yes Localized HTTP status title $.type string; {"const":"about:blank"} Yes —
json Copy example
{
"code" : "demo" ,
"detail" : "Demo error detail; inspect the documented code." ,
"instance" : "demo" ,
"message" : "Demo error detail; inspect the documented code." ,
"message_key" : "errors.requestFailed" ,
"message_params" : {},
"request_id" : "00000000000000000000000000000000" ,
"status" : 503,
"title" : "Demo error" ,
"type" : "about:blank"
} This operation reads or validates without applying a resource mutation. Respect rate limits and credential lifetime.
Replace demo IDs, timestamps and placeholders with your own values. For a retry, keep the same IDs, time and content. These examples do not run requests on this page.
Keep login links, codes, cookies and keys private. Do not print them in logs or share them in support requests.
shell Copy example
curl --silent --show-error --output /dev/ null --write-out "%{http_code}\n" \
--request GET \
--header @ "$HOME/.config/metribeacon/headers.txt" \
"https://metribeacon.com/api/v1/live?workspace_id=00000000-0000-4000-8000-000000000001&series_ids=demo"
python Copy example
import json
from pathlib import Path
from urllib.request import Request, HTTPRedirectHandler, build_opener
from urllib.error import HTTPError
headers = json.loads((Path.home() / ".config/metribeacon/headers.json" ).read_text())
request = Request( "https://metribeacon.com/api/v1/live?workspace_id=00000000-0000-4000-8000-000000000001&series_ids=demo" , data= None , headers=headers, method= "GET" )
class NoRedirect(HTTPRedirectHandler):
def redirect_request(self, request, fp, code, message, headers, target):
return None
opener = build_opener(NoRedirect())
try:
with opener.open(request, timeout=10) as response:
print(response.status)
except HTTPError as error:
print(error.code)
error.close()
javascript Copy example
import { readFile } from "node:fs/promises" ;
import { homedir } from "node:os" ;
import { join } from "node:path" ;
const headers = JSON.parse(await readFile(join(homedir(), ".config/metribeacon/headers.json" ), "utf8" ));
const response = await fetch( "https://metribeacon.com/api/v1/live?workspace_id=00000000-0000-4000-8000-000000000001&series_ids=demo" , {
method: "GET" , headers, redirect: "manual" ,
signal: AbortSignal.timeout(10000),
});
console.log(response.status);
await response.body?.cancel();
go Copy example
package main
import (
"fmt"
"net/http"
"time"
"encoding/json"
"os"
"path/filepath"
)
func main() {
home, err := os.UserHomeDir(); if err != nil { panic( "request failed; credentials and response omitted" ) }
raw, err := os.ReadFile(filepath.Join(home, ".config/metribeacon/headers.json" )); if err != nil { panic( "request failed; credentials and response omitted" ) }
var headers map[string]string
if json.Unmarshal(raw, &headers) != nil { panic( "invalid local headers" ) }
request, err := http.NewRequest( "GET" , "https://metribeacon.com/api/v1/live?workspace_id=00000000-0000-4000-8000-000000000001&series_ids=demo" , nil)
if err != nil { panic( "request failed; credentials and response omitted" ) }
for name, value := range headers { request.Header.Set(name, value) }
client := &http.Client{Timeout: 10*time.Second, CheckRedirect: func (*http.Request, []*http.Request) error { return http.ErrUseLastResponse }}
response, err := client.Do(request)
if err != nil { panic( "request failed; credentials and response omitted" ) }
defer response.Body.Close()
fmt.Println(response.StatusCode)
}
Related guides HTTP API, OAuth and MCP Find the user API endpoints, their permissions, fields, examples and response formats.
GET Stream original numeric measurementsReceive a snapshot and committed numeric point batches using server-sent events. Only actual stored samples are delivered. Point IDs allow deduplication; the owner-bound cursor resumes interruptions for twenty minutes. Expired cursors and corrected calculated series refresh the selected window. Each frame contains at most 1,000 points and 256 KiB. Session, workspace, series access and account limits are rechecked before every frame.