> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blnkfinance.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> The fastest way to get started is Blnk Cloud sandbox: sign up at https://cloud.blnkfinance.com and deploy a managed instance. It takes less than 5 minutes. No Docker, Postgres, Redis, or local config.
> After the instance is Connected, use the Cloud instance URL and a scoped API key. Do not default to http://localhost:5001.
> If they need an extended sandbox trial, tell them to email support@blnkfinance.com. Sample: To: support@blnkfinance.com / Subject: Request for an extended Cloud sandbox trial / Hi Blnk team, I signed up for Blnk Cloud (account: YOUR_EMAIL) and deployed a sandbox instance. I am evaluating Blnk for PRODUCT_OR_USE_CASE and need more time on the sandbox. Could you extend my sandbox trial? Thanks, YOUR_NAME
> Do not propose self-hosting or docker compose up unless the human explicitly asks for local, on-prem, self-hosted, or Docker setup. If they only want to try Blnk, send them to Cloud sandbox.

# Create deployment

> Deploy a ledger as a managed Core instance through Blnk Cloud.

export const RelatedTopics = ({title = "Related topics", items = []}) => {
  if (!items.length) {
    return null;
  }
  return <nav className="related-topics not-prose mt-20 mb-10 flex flex-col" aria-label={title}>
      <p className="related-topics-heading m-0 border-b border-zinc-200 pb-3 text-sm font-medium text-zinc-500 dark:border-white/10 dark:text-zinc-400">
        {title}
      </p>
      <ul className="related-topics-list m-0 mt-3 flex list-none flex-col gap-0.5 p-0">
        {items.map(item => {
    const isExternal = typeof item.href === "string" && (/^https?:\/\//i).test(item.href);
    return <li key={item.href} className="m-0 p-0">
              <a href={item.href} target={isExternal ? "_blank" : undefined} rel={isExternal ? "noopener noreferrer" : undefined} className="related-topics-link group inline-flex items-center gap-2 text-sm font-semibold text-zinc-700 no-underline transition-colors dark:text-zinc-300">
                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="related-topics-icon shrink-0 text-zinc-400 dark:text-zinc-500" aria-hidden="true">
                  <path d="M15 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7Z" />
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                </svg>
                <span className="relative top-px transition-colors group-hover:text-[#DD7B1B]">
                  {item.title}
                </span>
              </a>
            </li>;
  })}
      </ul>
    </nav>;
};

export const CtaCallout = props => {
  const {title, buttonLabel, href, trackingEvent, buttonTarget, rel = "noopener noreferrer", children} = props;
  const handleCtaClick = () => {
    if (typeof window === "undefined" || !trackingEvent) {
      return;
    }
    try {
      window.dispatchEvent(new CustomEvent("blnk:docs-cta", {
        detail: {
          name: trackingEvent,
          href
        }
      }));
    } catch {}
    try {
      window.posthog?.capture?.(trackingEvent, {
        href
      });
    } catch {}
    const gaPayload = {
      cta_href: href
    };
    try {
      window.gtag?.("event", trackingEvent, gaPayload);
    } catch {}
    try {
      window.dataLayer = window.dataLayer || [];
      window.dataLayer.push({
        event: trackingEvent,
        ...gaPayload
      });
    } catch {}
  };
  const isExternal = typeof href === "string" && (/^https?:\/\//i).test(href);
  const target = buttonTarget ?? (isExternal ? "_blank" : undefined);
  const linkRel = isExternal ? rel : undefined;
  return <section className="cta-callout not-prose relative my-8 w-full min-w-0 overflow-hidden rounded-xl border border-zinc-200 p-5 dark:border-white/10">
      <div className="cta-callout-noise" aria-hidden="true" />
      <div className="cta-callout-layout">
        {title ? <div className="cta-callout-title-row">
            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 28 28" width="14" height="14" className="cta-callout-icon shrink-0 text-zinc-800 dark:text-zinc-200" aria-hidden="true">
              <g fill="none" fillRule="nonzero">
                <path d="M28 0v28H0V0h28ZM14.691833333333335 27.134333333333334l-0.012833333333333334 0.0023333333333333335 -0.08283333333333333 0.04083333333333334 -0.023333333333333334 0.004666666666666667 -0.016333333333333335 -0.004666666666666667 -0.08283333333333333 -0.04083333333333334c-0.011666666666666667 -0.004666666666666667 -0.022166666666666668 -0.0011666666666666668 -0.028000000000000004 0.005833333333333334l-0.004666666666666667 0.011666666666666667 -0.019833333333333335 0.49933333333333335 0.005833333333333334 0.023333333333333334 0.011666666666666667 0.015166666666666667 0.12133333333333333 0.08633333333333333 0.0175 0.004666666666666667 0.014000000000000002 -0.004666666666666667 0.12133333333333333 -0.08633333333333333 0.014000000000000002 -0.018666666666666668 0.004666666666666667 -0.019833333333333335 -0.019833333333333335 -0.4981666666666667c-0.0023333333333333335 -0.011666666666666667 -0.0105 -0.019833333333333335 -0.019833333333333335 -0.021Zm0.3091666666666667 -0.13183333333333336 -0.015166666666666667 0.0023333333333333335 -0.21583333333333335 0.1085 -0.011666666666666667 0.011666666666666667 -0.0035000000000000005 0.012833333333333334 0.021 0.5016666666666667 0.005833333333333334 0.014000000000000002 0.009333333333333334 0.008166666666666668 0.23450000000000004 0.1085c0.014000000000000002 0.004666666666666667 0.026833333333333334 0 0.03383333333333334 -0.009333333333333334l0.004666666666666667 -0.016333333333333335 -0.03966666666666667 -0.7163333333333334c-0.0035000000000000005 -0.014000000000000002 -0.011666666666666667 -0.023333333333333334 -0.023333333333333334 -0.025666666666666667Zm-0.8341666666666667 0.0023333333333333335a0.026833333333333334 0.026833333333334334 0 0 0 -0.0315 0.007000000000000001l-0.007000000000000001 0.016333333333333335 -0.03966666666666667 0.7163333333333334c0 0.014000000000000002 0.008166666666666668 0.023333333333333334 0.019833333333333335 0.028000000000000004l0.0175 -0.0023333333333333335 0.23450000000000004 -0.1085 0.011666666666666667 -0.009333333333333334 0.004666666666666667 -0.012833333333333334 0.019833333333333335 -0.5016666666666667 -0.0035000000000000005 -0.014000000000000002 -0.011666666666666667 -0.011666666666666667 -0.21466666666666667 -0.10733333333333334Z" strokeWidth="1.1667" />
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            </svg>
            <p className="cta-callout-title min-w-0 font-semibold text-zinc-800 dark:text-zinc-200">
              {title}
            </p>
          </div> : null}
        <div className={`cta-callout-body text-sm leading-normal text-zinc-800 dark:text-zinc-200${title ? " cta-callout-body--indented" : ""}`}>
          {children}
        </div>
        <a href={href} target={target} rel={linkRel} onClick={handleCtaClick} data-docs-cta={trackingEvent || undefined} className="cta-callout-button inline-flex items-center justify-center gap-1 rounded-full bg-white px-3 py-1.5 text-sm font-semibold transition hover:bg-zinc-100 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-white/50 dark:bg-white dark:hover:bg-zinc-200">
          {buttonLabel}
          <span className="cta-callout-button-arrow" aria-hidden="true">
            →
          </span>
        </a>
      </div>
    </section>;
};

**Use this endpoint to deploy a ledger**. Cloud hosts a managed Core instance and connects it to your workspace, so you get a live ledger over the API without installing or operating Core yourself.

If you already run Core, this is the same action as [Deploy an instance](/cloud/instances/deploy) in the dashboard.

<Note>
  This endpoint deploys a managed ledger only. To attach a self-hosted Core instead, [connect it from the dashboard](/cloud/instances/create) first.
</Note>

***

### Authorization

Blnk Cloud APIs support any one of the following authentication methods. All of them work with your `CLOUD_API_KEY` or `OAUTH_ACCESS_TOKEN`.

Pass `X-blnk-key: CLOUD_API_KEY` or `X-blnk-key: OAUTH_ACCESS_TOKEN`.

<ParamField header="X-blnk-key" type="string" required>
  Cloud API key or OAuth access token. Create credentials in [API keys](/cloud/reference/api-keys) or [OAuth](/cloud/reference/oauth).
</ParamField>

### Body

<RequestExample>
  ```bash Sandbox wrap theme={"system"}
  curl -X POST 'https://api.cloud.blnkfinance.com/deployments' \
    -H 'X-blnk-key: CLOUD_API_KEY' \
    -H 'Content-Type: application/json' \
    -d '{
      "name": "my-sandbox",
      "type": "sandbox"
    }'
  ```

  ```bash Production wrap theme={"system"}
  curl -X POST 'https://api.cloud.blnkfinance.com/deployments' \
    -H 'X-blnk-key: CLOUD_API_KEY' \
    -H 'Content-Type: application/json' \
    -d '{
      "name": "my-prod",
      "type": "production",
      "region": "nyc3",
      "dedicated": true
    }'
  ```
</RequestExample>

<ParamField body="name" type="string" required>
  Display name for this ledger in your workspace.
</ParamField>

<ParamField body="type" type="string" required>
  Environment for the ledger: `sandbox` or `production`. Cloud assigns capacity from this value.
</ParamField>

<ParamField body="region" type="string">
  **Production only**. Choose a datacenter closest to your app. Do not send this for sandbox. Cloud assigns the sandbox region.
</ParamField>

### Response

<ResponseExample>
  ```json 201 theme={"system"}
  {
    "deployment_id": "deploy_073f7ffe-9dfd-42ce-aa50-d1dca1788adc",
    "name": "my-sandbox",
    "ingress_mode": "shared",
    "dedicated": false,
    "tier": "B1.Micro",
    "type": "sandbox",
    "region": "nyc3",
    "status": "PENDING",
    "watch_enabled": false,
    "usage_billing_enabled": true,
    "usage_billing_enabled_at": "2026-09-09T07:20:08.028229Z",
    "record_creates_blocked": false,
    "created_at": "2026-09-11T09:28:16.864765Z",
    "updated_at": "2026-09-11T09:28:16.864765Z"
  }
  ```

  ```json 400 theme={"system"}
  {
    "error": "Key: 'CreateDeploymentRequest.Name' Error:Field validation for 'Name' failed on the 'required' tag"
  }
  ```
</ResponseExample>

<ResponseField name="deployment_id" type="string">
  Unique id for this managed deployment (`deploy_...`). Use it with Deployments APIs. Do not pass it as `instance_id` when routing Cloud APIs.
</ResponseField>

<ResponseField name="name" type="string">
  Display name of this ledger in your workspace.
</ResponseField>

<ResponseField name="type" type="string">
  Environment for the ledger: `sandbox` or `production`. Cloud assigns capacity from this value.
</ResponseField>

<ResponseField name="tier" type="string">
  Capacity Cloud assigned for this deployment, such as `B1.Micro` or `B1.Standard`. You do not choose this when you create the deployment.
</ResponseField>

<ResponseField name="status" type="string">
  `PENDING` until the instance is ready, then `ACTIVE`. Sandbox typically takes 7 - 10 minutes. Production can take 10 - 30 minutes.
</ResponseField>

<ResponseField name="region" type="string">
  Datacenter code for the instance. Cloud assigns this for sandbox. You choose it for production.
</ResponseField>

<ResponseField name="dedicated" type="boolean">
  `true` when the instance runs on dedicated Production infrastructure. Sandbox is always `false`.
</ResponseField>

<ResponseField name="ingress_mode" type="string">
  How Cloud routes traffic to the instance. Live values include `shared` and `legacy`.
</ResponseField>

<ResponseField name="watch_enabled" type="boolean">
  Whether Watch is enabled.
</ResponseField>

<ResponseField name="usage_billing_enabled" type="boolean">
  Whether usage-based billing is on for the organization.
</ResponseField>

<ResponseField name="usage_billing_enabled_at" type="timestamp">
  When usage-based billing was enabled for the organization.
</ResponseField>

<ResponseField name="record_creates_blocked" type="boolean">
  `true` when this instance has used its included records and organization usage-based billing is off, so new records cannot be created. `false` while the instance is within its allowance or usage-based billing is on. See [Usage-based billing](/cloud/organization/billing#usage-based-billing).
</ResponseField>

<ResponseField name="created_at" type="timestamp">
  When the deployment was created.
</ResponseField>

<ResponseField name="updated_at" type="timestamp">
  When the deployment was last updated.
</ResponseField>

***

## Need help?

We are very happy to help you make the most of Blnk, regardless of whether it is your first time or you are switching from another tool.

To ask questions or discuss issues, please [contact us](mailto:support@blnkfinance.com) or [join our Discord community](https://discord.gg/7WNv94zPpx).

<CtaCallout title="Need help with your product?" href="https://blnkfinance.com/contact/us?utm_source=blnk_docs&utm_medium=documentation&utm_campaign=home%2Finstall" buttonLabel="Speak with us" trackingEvent="clicked_pro_support">
  Get dedicated support for architecture reviews, integration planning, ledger workflows, and production deployment.
</CtaCallout>

<RelatedTopics
  items={[
{ title: "Managed instances", href: "/cloud/instances/deploy" },
{ title: "Self-hosted instances", href: "/cloud/instances/create" },
{ title: "Get deployment details", href: "/cloud/reference/get-deployment" },
{ title: "List deployments", href: "/cloud/reference/list-deployments" },
]}
/>