> For the complete documentation index, see [llms.txt](https://123-87.gitbook.io/signgate-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://123-87.gitbook.io/signgate-api/en.md).

# Home

SignGate gives agent runtimes, wallets, and payment clients an evidence-backed decision before a sensitive action executes.

{% hint style="info" %}
The current onboarding path is a credential-free safe sample. It does not call production, issue a sandbox key, or charge a payment.
{% endhint %}

[Start with a safe sample](/signgate-api/documentation/quickstart.md) · [Explore API services](/signgate-api/api-reference/overview.md) · [Request access](/signgate-api/help-center/support.md#request-access) · [Contact us](/signgate-api/help-center/support.md#contact-us)

## Five first-release services

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Risk Source API</strong></td><td>Inspect address risk, labels, exposure, behavior, and evidence boundaries.</td><td><a href="/pages/a7m8Vut66RqW2Ky6lZpN">/pages/a7m8Vut66RqW2Ky6lZpN</a></td></tr><tr><td><strong>Agent Payment Control</strong></td><td>Decide whether an agent payment may proceed, needs review, or must stop.</td><td><a href="/pages/Pd4VY1uk0sbtdGb2fnbt">/pages/Pd4VY1uk0sbtdGb2fnbt</a></td></tr><tr><td><strong>Agentic Commerce Preflight</strong></td><td>Evaluate an agent-initiated purchase before execution.</td><td><a href="/pages/lS4ZokPENlmILz9UkaVX">/pages/lS4ZokPENlmILz9UkaVX</a></td></tr><tr><td><strong>Approval &#x26; Signer Control</strong></td><td>Translate an approved decision into an explicit signer directive.</td><td><a href="/pages/zx1kHHoqOMzHJjSvBauJ">/pages/zx1kHHoqOMzHJjSvBauJ</a></td></tr><tr><td><strong>Merchant &#x26; x402 Trust</strong></td><td>Assess merchant wallets and payment endpoints before purchase.</td><td><a href="/pages/virVc3EuN0FgXdAliyrs">/pages/virVc3EuN0FgXdAliyrs</a></td></tr></tbody></table>

## Five-minute safe-sample path

1. Open the credential-free sample.
2. View the sample request.
3. Copy the cURL syntax.
4. Inspect the static/sample response.
5. Apply the service's exact decision vocabulary before continuing.

{% hint style="warning" %}
No verified sandbox key issuance flow, isolated sandbox Base URL, or authorized production browser Test it exists today.
{% endhint %}

## Find your next step

[Documentation](/signgate-api/documentation/documentation.md) · [API Reference](/signgate-api/api-reference/overview.md) · [Public OpenAPI JSON](https://raw.githubusercontent.com/lukekwan/agent-payment-guard/docs/doc-sg-001-api-docs/docs/gitbook/public/openapi/signgate-public-v0.1.openapi.json) · [Changelog](/signgate-api/changelog/changelog.md) · [Help Center](/signgate-api/help-center/help-center.md) · [Contact us](/signgate-api/help-center/support.md#contact-us)


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