GitHub: Create or update external custom property values for a property across organization repositories

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Operation github.orgs_external_properties_for_repos_create_or_update_values_for_organization_property

Provider route: PATCH /orgs/{org}/properties/installations/values/{property_name}. Alter supplies the connection’s credentials and routing.

Call through Alter

Install @alter-ai/sdk @alter-ai/github with npm, or alter-sdk-github with pip. Supply your connected customer’s grant ID and the arguments described below.

import { App } from "@alter-ai/sdk";
import { GitHubIntegration } from "@alter-ai/github";

async function execute(input: Parameters<GitHubIntegration["orgs"]["orgsExternalPropertiesForReposCreateOrUpdateValuesForOrganizationProperty"]>[0]) {
  const app = new App({ apiKey: process.env.ALTER_API_KEY! });
  try {
    const provider = new GitHubIntegration(app, { grantId: process.env.PROVIDER_GRANT_ID! });
    const call = await provider.orgs.orgsExternalPropertiesForReposCreateOrUpdateValuesForOrganizationProperty(input);
    const result = await call.wait();
    return result.bodyJson();
  } finally {
    await app.close();
  }
}

import os
from alter_sdk import App
from alter_sdk_github import GitHubIntegration

async def execute(arguments):
    async with App(api_key=os.environ["ALTER_API_KEY"]) as app:
        provider = GitHubIntegration(app, {"grant_id": os.environ["PROVIDER_GRANT_ID"]})
        call = await provider.orgs.orgs_external_properties_for_repos_create_or_update_values_for_organization_property(arguments)
        result = await call.wait()
        return result.body_json()

Input

Field	Type	Presence	Description and constraints
$	object	Root	Additional keys: not allowed
path	object	Required within parent	Additional keys: not allowed
path.org	string	Required within parent
path.property_name	string	Required within parent
body	object	Required within parent
body.repository_values	array	Required within parent	The names of repositories and the values that the named external custom property will be set to. Maximum items: 100 Minimum items: 1
body.repository_values[]	Model	Each item	Expand Create or update external custom property values for a property across organization repositories — request body — body repository values item

Referenced models: Create or update external custom property values for a property across organization repositories — request body — body repository values item

Response

Response media type: application/json. The table describes the pinned successful response. Referenced models link to their complete fields.

Field	Type	Presence	Description and constraints
$	null	Root

Schemas

Create or update external custom property values for a property across organization repositories — request body — body repository values item

Field	Type	Presence	Description and constraints
$	object	Root	Repository name and associated external custom property value
repository_name	string	Required within parent	The name of the repository
value	JSON	Required within parent
value (anyOf 1)	string	Alternative	The value assigned to the repository. Set to `null` to unset the value for this repository.
value (anyOf 2)	null	Alternative

Policy, approvals and errors

SDK function policy ID: github.orgs_external_properties_for_repos_create_or_update_values_for_organization_property. Catalog operation: orgs/external-properties-for-repos-create-or-update-values-for-organization-property. Rules can name either ID; function rules distinguish managed calls and conservatively cover raw calls sharing the route. Existing grant permissions and policy rules apply. wait() returns an immediate result or waits for a required approval; it never approves the request itself. Persist the approval ID to resume after a restart.

Provider errors retain their response; JSON decoding raises ProviderAPIError for provider failures. ManagedOperationError identifies contract/input/retention errors. See error handling and provider-specific behavior. Sensitive input may be refused before approval storage. A decoding error never resubmits a write.

Pinned headers: {"X-GitHub-Api-Version": "2026-03-10", "User-Agent": "Alter", "Accept": "application/vnd.github+json"}

No-content response statuses: [204]

Official provider source