The Tool Desk
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What the Indexing API requires before a request can succeed
Every publish or removal request has to pass several independent checks. Fixing one does not compensate for a failure in another. The complete setup is:
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- A Google Cloud project associated with the credentials.
- The Indexing API enabled in that project.
- A service account whose identity is the one actually used to mint the token.
- Search Console ownership for the target site, with that service-account email added as a delegated owner of the relevant property.
- An OAuth 2.0 access token issued with the exact scope
https://www.googleapis.com/auth/indexing. - A supported request containing a valid URL and either
URL_UPDATEDorURL_REMOVED.
Google describes the authentication requirement this way: every call must be authenticated with an OAuth token obtained in exchange for the service account’s private key. The key file identifies the account; it does not grant that account access to a Search Console property.
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The error text usually tells you which layer rejected the request. Capture the complete HTTP response, including the JSON error object, rather than troubleshooting from the status code alone.
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| Error or symptom | Most likely layer | What to check first |
|---|---|---|
accessNotConfigured |
Cloud project and API configuration | Confirm that the project tied to the service-account credentials has the Indexing API enabled and that your application is using that same project. |
Permission denied. Failed to verify the URL ownership. |
Search Console ownership or property matching | Add the exact service-account email as a delegated owner and confirm that the submitted URL belongs to that Domain or URL-prefix property. |
| Account deleted, disabled, or unverified | Credential or service-account state | Check the account in Google Cloud, make sure it is active, and verify that the token is being minted from the intended key. |
| A generic Cloud IAM permission denial | IAM policy or resource eligibility | Inspect the principal, required permission, allow bindings, deny policies, and whether the target resource supports the operation. |
| HTTP 400 for URL or notification type | Request format, not authorization | Validate the URL and use only the documented notification types, URL_UPDATED or URL_REMOVED. |
A 403 is not evidence that the URL itself is malformed. Malformed URLs and unsupported notification values normally produce a 400-level validation response, so solve authorization first only when the response identifies authorization or ownership.
Step 1: confirm the Cloud project and enable the Indexing API
Identify the project actually used by the credentials
Open the service-account JSON file and note its client_email and project fields. The project named there is a useful starting point, but your code can still select a different project when it creates credentials or configures a client. Compare the project shown in your application configuration with the project in Google Cloud Console.
For a service account, the email normally follows the form [email protected]; the exact account and project names vary. Do not assume that a key downloaded from one project is using the project currently selected in the console.
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- In Google Cloud Console, select the project associated with the service-account credentials.
- Open APIs & Services, then Library.
- Find Indexing API and select Enable. If the page offers Manage rather than Enable, it is already active.
- Re-run the request with a newly minted token after the change.
If the response is accessNotConfigured, changing Search Console users will not fix it. The API activation and the project selected by the request must agree.
Step 2: prove which service-account identity is calling
Use the client_email value from the same JSON key that your program loads. Compare it character for character with the address entered in Search Console. A different key, an environment variable pointing at another file, or a workload identity that impersonates another account can make a correctly configured account appear unauthorized.
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Common identity mix-ups
- The key belongs to a staging project while the Indexing API was enabled only in production.
- A deployment uses a default runtime service account instead of the account represented by the local JSON key.
- The email was copied with a trailing space or the wrong project name.
- A rotated or revoked key is still referenced by the application.
Log the non-secret identity (the service-account email and project ID) at startup. Never log the private key, refresh token, or complete access token.
Step 3: add the account as a delegated owner in Search Console
Use the exact property that contains the submitted URL
First verify the site in Search Console. Then open the property’s Settings, choose Users and permissions, and add the service-account email with the Owner permission. Google refers to this as adding a delegated owner.
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The property must cover the URL you send:
- A Domain property covers the verified domain and its protocol and subdomain variants according to Search Console’s domain verification rules.
- A URL-prefix property covers only URLs under its exact protocol, host, and path prefix. For example, a property beginning with
https://www.example.com/does not automatically coverhttp://example.com/or a different subdomain.
Ownership of a related property is not enough. If the account owns https://www.example.com/ but the request sends a URL on https://shop.example.com/, or sends an HTTP URL to an HTTPS-only URL-prefix property, the API can return Permission denied. Failed to verify the URL ownership.
Check the invitation and effective permission
- Confirm that the email in Users and permissions exactly matches
client_email. - Make sure the account is listed as an owner, not merely as a restricted or full user.
- Verify the property selector in Search Console before copying the URL into your request.
- Allow a short propagation interval, then mint a fresh token and retry.
A valid JSON key can authenticate the caller while ownership verification still fails. Authentication and authorization are separate checks.
Step 4: mint an OAuth token with the required scope
The Indexing API requires OAuth 2.0 and the exact scope https://www.googleapis.com/auth/indexing. An access token issued for another Google API, an API key, or an unscoped service-account credential will not satisfy this requirement.
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Use a Google-supported client library
Google recommends client libraries because they handle JWT signing, token exchange, expiration, and refresh details that are easy to implement incorrectly. A minimal Python example using a service-account key is:
from google.auth.transport.requests import Request
from google.oauth2 import service_account
SCOPES = ["https://www.googleapis.com/auth/indexing"]
credentials = service_account.Credentials.from_service_account_file(
"service-account.json",
scopes=SCOPES,
)
credentials.refresh(Request())
print(credentials.token)Use the resulting bearer token in the authorization header of the documented Indexing API publish method. Do not paste the token into source control or a ticket. Tokens expire; if a long-running process receives an authorization failure after working earlier, refresh the credentials rather than reusing an old token.
Verify the token without exposing it
- Confirm that the credential object was created from the intended key file.
- Inspect the credential’s configured scopes in application diagnostics, but do not print the full token.
- Check the token’s expiration time and refresh it before sending a request when necessary.
- Ensure the HTTP request sends
Authorization: Bearer <access-token>.
Every request must carry an authorization token. Supplying the scope during credential creation is not enough if the application later sends a request without the bearer header.
Step 5: send a supported notification request
Once project, ownership, and token checks pass, use the documented Indexing API publish method. The request body contains a single URL and a notification type. The supported values are:
| Field | Accepted value or requirement | Typical use |
|---|---|---|
url |
A complete, valid URL that belongs to the owned Search Console property | The canonical page address being notified |
type |
URL_UPDATED |
Tell Google that a URL’s content or availability changed |
type |
URL_REMOVED |
Tell Google that a URL was removed |
Keep the authorization diagnosis separate from payload validation. If the API returns a 400 after you fix the 403, inspect URL syntax, encoding, and the notification value instead of changing IAM permissions.
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Step 6: investigate generic Google Cloud IAM 403s
Not every 403 comes from Search Console’s ownership check. A generic Cloud IAM denial can mean that the caller lacks an allow-role permission, a deny policy blocks the operation, or the resource is not eligible for that operation.
Inspect the principal
Use the identity shown by your runtime, not the account you intended to use. For local development this is often the service-account email in the key file; for a managed runtime it may be a different service account or an impersonated principal.
Inspect allow and deny policies
- Review IAM bindings on the project and any parent or related resource.
- Check whether an organization or project deny policy explicitly blocks the required permission.
- Look for conditional bindings whose resource, time, or principal conditions are not met.
- Confirm that the target resource is eligible for the API operation and has not been deleted or disabled.
Grant only the permission required by the documented operation. Broad, unrelated administrator roles can hide the real problem and create unnecessary exposure.
A repeatable 403 troubleshooting checklist
- Copy the complete error message and identify whether it says
accessNotConfigured, ownership verification failure, account state failure, or a generic IAM denial. - Record the Cloud project ID and service-account
client_emailused by the running application. - In that project, confirm that the Indexing API is enabled.
- In Search Console, open the exact Domain or URL-prefix property that contains the submitted URL.
- Confirm that the same service-account email is a delegated owner of that property.
- Mint a new OAuth 2.0 token with
https://www.googleapis.com/auth/indexing. - Verify that the request includes the bearer token and a supported notification type.
- If the response remains a generic IAM denial, inspect principals, allow bindings, deny policies, and resource eligibility.
- After each change, retry one controlled URL and save the response so you can tell which change resolved the failure.
Frequent mistakes and their fixes
“The key is valid, so ownership should work.”
A key proves that the application can act as the service account. It does not associate that account with a Search Console property. Add the account as a delegated owner.
“The account owns the domain, but the API still rejects the URL.”
Check the property type and URL details. Protocol, hostname, subdomain, and path-prefix differences matter for URL-prefix properties.
“I enabled the API, but I still receive accessNotConfigured.”
Compare the project selected in Cloud Console with the project and credentials used at runtime. Enabling the API in a different project has no effect.
“I added the account but reused the old token.”
Refresh the OAuth credentials and send the new bearer token. A token issued before a permission change may not reflect the current authorization state.
“I changed IAM roles for a 400 error.”
Return to the payload. A malformed URL or unsupported notification type is a request-validation problem, not proof that the service account lacks permission.
What a successful diagnostic result looks like
You have isolated the configuration when all four identities line up: the Cloud project that has the API enabled, the service account named in client_email, the Search Console property where that account is a delegated owner, and the URL submitted in the request. The token then carries the exact Indexing scope and the request uses one of the two supported notification types. If those conditions are true and a generic 403 remains, the remaining investigation belongs in Cloud IAM policy and resource eligibility rather than Search Console ownership.
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