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POST Link a verified provider identity with an action code

/api/v1/auth/identities/{provider}

A provider callback must have completed for an attempt owned by this session. The code binds provider and attempt ID. One provider identity belongs to only one account.

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Access and permissions

A provider callback must have completed for an attempt owned by this session. The code binds provider and attempt ID. One provider identity belongs to only one account.

Browser session: __Host-mb_session cookie.

When using a browser session for a mutation, send the current CSRF token in X-CSRF-Token with the same-site cookie. OAuth consent uses its documented form field.

Parameters and headers

FieldLocationType and limitsRequiredMeaning
providerPathstring; {"enum":["google","github"]}YesSupported login provider: google or github.
OriginHeaderstring; {"format":"uri"}NoIf present, must match the canonical HTTPS origin. Sec-Fetch-Site cross-site is rejected.
X-CSRF-TokenHeaderstringYesBrowser CSRF cookie value. Not required when an allowed machine management credential is used.

Request body

FieldType and limitsRequiredMeaning
$object; {"additionalProperties":false}Yes—
$.attempt_idstring; {"format":"uuid"}YesUUID of the browser-bound provider attempt.
$.confirmationActionConfirmationYes—
$.confirmation.codestring; {"pattern":"^[0-9]{6}$"}Yes—
$.confirmation.idstring; {"format":"uuid"}YesUUID of this resource. Keep the returned identifier for subsequent operations.

Responses

HeaderType and limitsMeaning
Cache-Controlstring; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"}Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation.
Content-Languagestring; {"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-PolicyJSON; {"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.
VarystringResponses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie.
X-Content-Type-OptionsJSON; {"const":"nosniff"}The browser must use the declared content type.
X-Frame-OptionsJSON; {"const":"DENY"}The response must not be embedded in a frame.
X-Request-IDstringServer-generated request identifier. Include this when reporting an error; inbound values are not trusted.

application/json

FieldType and limitsRequiredMeaning
$objectYes—
$.statusstringYes—
json
{
  "status": "demo"
}
Stable error codes
invalid_credential
unauthorized
HeaderType and limitsMeaning
Cache-Controlstring; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"}Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation.
Content-Languagestring; {"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-PolicyJSON; {"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.
VarystringResponses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie.
X-Content-Type-OptionsJSON; {"const":"nosniff"}The browser must use the declared content type.
X-Frame-OptionsJSON; {"const":"DENY"}The response must not be embedded in a frame.
X-Request-IDstringServer-generated request identifier. Include this when reporting an error; inbound values are not trusted.

application/problem+json

FieldType and limitsRequiredMeaning
$ProblemYes—
$.codestringYesStable machine-readable error code
$.detailstringYesShort localized explanation without internal error details
$.instancestringYesUnique relative identifier /api/v1/requests/{request_id}; not a retrievable resource
$.messagestringYesTemporarily identical to detail for existing clients
$.message_keystringYesStable translation key for changing the displayed language without another request
$.message_paramsobject; {"additionalProperties":true}YesNamed, safely rendered message parameters; never arbitrary HTML
$.request_idstring; {"pattern":"^[0-9a-f]{32}$"}YesServer-generated diagnostic identifier. It contains no login token or credential.
$.statusinteger; {"maximum":599,"minimum":400}Yes—
$.titlestringYesLocalized HTTP status title
$.typestring; {"const":"about:blank"}Yes—
json
{
  "code": "demo",
  "detail": "Demo error detail; inspect the documented code.",
  "instance": "demo",
  "message": "Demo error detail; inspect the documented code.",
  "message_key": "errors.requestFailed",
  "message_params": {},
  "request_id": "00000000000000000000000000000000",
  "status": 401,
  "title": "Demo error",
  "type": "about:blank"
}
Stable error codes
csrf
insufficient_scope
invalid_origin
HeaderType and limitsMeaning
Cache-Controlstring; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"}Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation.
Content-Languagestring; {"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-PolicyJSON; {"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.
VarystringResponses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie.
X-Content-Type-OptionsJSON; {"const":"nosniff"}The browser must use the declared content type.
X-Frame-OptionsJSON; {"const":"DENY"}The response must not be embedded in a frame.
X-Request-IDstringServer-generated request identifier. Include this when reporting an error; inbound values are not trusted.

application/problem+json

FieldType and limitsRequiredMeaning
$ProblemYes—
$.codestringYesStable machine-readable error code
$.detailstringYesShort localized explanation without internal error details
$.instancestringYesUnique relative identifier /api/v1/requests/{request_id}; not a retrievable resource
$.messagestringYesTemporarily identical to detail for existing clients
$.message_keystringYesStable translation key for changing the displayed language without another request
$.message_paramsobject; {"additionalProperties":true}YesNamed, safely rendered message parameters; never arbitrary HTML
$.request_idstring; {"pattern":"^[0-9a-f]{32}$"}YesServer-generated diagnostic identifier. It contains no login token or credential.
$.statusinteger; {"maximum":599,"minimum":400}Yes—
$.titlestringYesLocalized HTTP status title
$.typestring; {"const":"about:blank"}Yes—
json
{
  "code": "demo",
  "detail": "Demo error detail; inspect the documented code.",
  "instance": "demo",
  "message": "Demo error detail; inspect the documented code.",
  "message_key": "errors.requestFailed",
  "message_params": {},
  "request_id": "00000000000000000000000000000000",
  "status": 403,
  "title": "Demo error",
  "type": "about:blank"
}
Stable error codes
identity_in_use
invalid_link
HeaderType and limitsMeaning
Cache-Controlstring; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"}Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation.
Content-Languagestring; {"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-PolicyJSON; {"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.
VarystringResponses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie.
X-Content-Type-OptionsJSON; {"const":"nosniff"}The browser must use the declared content type.
X-Frame-OptionsJSON; {"const":"DENY"}The response must not be embedded in a frame.
X-Request-IDstringServer-generated request identifier. Include this when reporting an error; inbound values are not trusted.

application/problem+json

FieldType and limitsRequiredMeaning
$ProblemYes—
$.codestringYesStable machine-readable error code
$.detailstringYesShort localized explanation without internal error details
$.instancestringYesUnique relative identifier /api/v1/requests/{request_id}; not a retrievable resource
$.messagestringYesTemporarily identical to detail for existing clients
$.message_keystringYesStable translation key for changing the displayed language without another request
$.message_paramsobject; {"additionalProperties":true}YesNamed, safely rendered message parameters; never arbitrary HTML
$.request_idstring; {"pattern":"^[0-9a-f]{32}$"}YesServer-generated diagnostic identifier. It contains no login token or credential.
$.statusinteger; {"maximum":599,"minimum":400}Yes—
$.titlestringYesLocalized HTTP status title
$.typestring; {"const":"about:blank"}Yes—
json
{
  "code": "demo",
  "detail": "Demo error detail; inspect the documented code.",
  "instance": "demo",
  "message": "Demo error detail; inspect the documented code.",
  "message_key": "errors.requestFailed",
  "message_params": {},
  "request_id": "00000000000000000000000000000000",
  "status": 409,
  "title": "Demo error",
  "type": "about:blank"
}
Stable error codes
invalid_input
HeaderType and limitsMeaning
Cache-Controlstring; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"}Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation.
Content-Languagestring; {"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-PolicyJSON; {"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.
VarystringResponses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie.
X-Content-Type-OptionsJSON; {"const":"nosniff"}The browser must use the declared content type.
X-Frame-OptionsJSON; {"const":"DENY"}The response must not be embedded in a frame.
X-Request-IDstringServer-generated request identifier. Include this when reporting an error; inbound values are not trusted.

application/problem+json

FieldType and limitsRequiredMeaning
$ProblemYes—
$.codestringYesStable machine-readable error code
$.detailstringYesShort localized explanation without internal error details
$.instancestringYesUnique relative identifier /api/v1/requests/{request_id}; not a retrievable resource
$.messagestringYesTemporarily identical to detail for existing clients
$.message_keystringYesStable translation key for changing the displayed language without another request
$.message_paramsobject; {"additionalProperties":true}YesNamed, safely rendered message parameters; never arbitrary HTML
$.request_idstring; {"pattern":"^[0-9a-f]{32}$"}YesServer-generated diagnostic identifier. It contains no login token or credential.
$.statusinteger; {"maximum":599,"minimum":400}Yes—
$.titlestringYesLocalized HTTP status title
$.typestring; {"const":"about:blank"}Yes—
json
{
  "code": "demo",
  "detail": "Demo error detail; inspect the documented code.",
  "instance": "demo",
  "message": "Demo error detail; inspect the documented code.",
  "message_key": "errors.requestFailed",
  "message_params": {},
  "request_id": "00000000000000000000000000000000",
  "status": 422,
  "title": "Demo error",
  "type": "about:blank"
}
Stable error codes
provider_unavailable
unavailable
HeaderType and limitsMeaning
Cache-Controlstring; {"pattern":"(?:^|,\\s*)no-store(?:,|$)"}Private API responses prohibit storage. Public OAuth metadata is cached for 300 seconds; live streams additionally prohibit transformation.
Content-Languagestring; {"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-PolicyJSON; {"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-Afterstring; {"pattern":"^[0-9]+$"}Seconds before retry. Preserve supported idempotency identifiers and respect the operation’s mutation semantics.
VarystringResponses vary by Accept-Language; browser-rendered responses can also vary by the preference cookie.
X-Content-Type-OptionsJSON; {"const":"nosniff"}The browser must use the declared content type.
X-Frame-OptionsJSON; {"const":"DENY"}The response must not be embedded in a frame.
X-Request-IDstringServer-generated request identifier. Include this when reporting an error; inbound values are not trusted.

application/problem+json

FieldType and limitsRequiredMeaning
$ProblemYes—
$.codestringYesStable machine-readable error code
$.detailstringYesShort localized explanation without internal error details
$.instancestringYesUnique relative identifier /api/v1/requests/{request_id}; not a retrievable resource
$.messagestringYesTemporarily identical to detail for existing clients
$.message_keystringYesStable translation key for changing the displayed language without another request
$.message_paramsobject; {"additionalProperties":true}YesNamed, safely rendered message parameters; never arbitrary HTML
$.request_idstring; {"pattern":"^[0-9a-f]{32}$"}YesServer-generated diagnostic identifier. It contains no login token or credential.
$.statusinteger; {"maximum":599,"minimum":400}Yes—
$.titlestringYesLocalized HTTP status title
$.typestring; {"const":"about:blank"}Yes—
json
{
  "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"
}

Retries and asynchronous work

This change does not have a general retry guarantee. If the response is unclear, read the affected resource before trying again. Follow Retry-After waiting times and request new sign-in or action codes when they expire.

Request examples

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
curl --silent --show-error --output /dev/null --write-out "%{http_code}\n" \
  --request POST \
  --header @"$HOME/.config/metribeacon/headers.txt" \
  --header "Content-Type: application/json" \
  --data-binary '{"attempt_id":"00000000-0000-4000-8000-000000000001","confirmation":{"code":"123456","id":"00000000-0000-4000-8000-000000000001"}}' \
  "https://metribeacon.com/api/v1/auth/identities/google"
python
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())
headers["Content-Type"] = "application/json"
request = Request("https://metribeacon.com/api/v1/auth/identities/google", data="{\"attempt_id\":\"00000000-0000-4000-8000-000000000001\",\"confirmation\":{\"code\":\"123456\",\"id\":\"00000000-0000-4000-8000-000000000001\"}}".encode("utf-8"), headers=headers, method="POST")
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
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"));
headers["Content-Type"] = "application/json";
const response = await fetch("https://metribeacon.com/api/v1/auth/identities/google", {
  method: "POST", headers, redirect: "manual",
  signal: AbortSignal.timeout(10000), body: "{\"attempt_id\":\"00000000-0000-4000-8000-000000000001\",\"confirmation\":{\"code\":\"123456\",\"id\":\"00000000-0000-4000-8000-000000000001\"}}",
});
console.log(response.status);
await response.body?.cancel();
go
package main

import (
  "fmt"
  "net/http"
  "time"
  "encoding/json"
  "os"
  "path/filepath"
  "strings"
)

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("POST", "https://metribeacon.com/api/v1/auth/identities/google", strings.NewReader("{\"attempt_id\":\"00000000-0000-4000-8000-000000000001\",\"confirmation\":{\"code\":\"123456\",\"id\":\"00000000-0000-4000-8000-000000000001\"}}"))
  if err != nil { panic("request failed; credentials and response omitted") }
  for name, value := range headers { request.Header.Set(name, value) }
  request.Header.Set("Content-Type", "application/json")
  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)
}
  • HTTP API, OAuth and MCP

    Find the user API endpoints, their permissions, fields, examples and response formats.

  • DELETE Unlink a provider identity with an action code

    The code binds provider and identity ID. Unlinking revokes browser sessions; sign in again by email. Machine identity, origin, quotas and telemetry remain unchanged.

  • GET Read your linked identities and pending links

    Read your linked identities and pending links.

  • POST Request a code for one sensitive action

    Request a six-digit confirmation code for a sensitive account or workspace change. It lasts five minutes and allows five incorrect attempts. Use the same signed-in browser, action, target and parameters when confirming. A replacement requested after 60 seconds invalidates the previous code for that action. For your own account use link_identity, unlink_identity, add_passkey, remove_passkey or delete_self; workspace membership actions require owner permission. Do not use sign-in codes to confirm changes.