Build document checks into your workflow.

Package

Koldera.Sdk 0.1.0 — NuGet

Credential

Project secret key (ap_sk_…) from a server environment variable or secrets manager.

Reference

sdk/dotnet/README.md in the source repository (access-restricted; not public documentation).

Install

No public install command: this package is not on NuGet yet. Developers with access to the repository can build it from source as described in its README; everyone else can read the example below and wait for the beta announcement on the pricing page.

First check: one PDF, the terminal outcome, findings and manual review

Preview — requires beta package access

using Koldera.Sdk;

using var client = new AccessibilityClient(new AccessibilityClientOptions
{
    SecretKey = Environment.GetEnvironmentVariable("KOLDERA_SECRET_KEY"), // server-side only
    BaseUrl = new Uri(Environment.GetEnvironmentVariable("KOLDERA_API_URL")!),
});

await using var pdf = File.OpenRead("sample.pdf");
var job = await client.Pdf.CreateJobAsync(pdf, PdfJobModes.Analyze, fileName: "sample.pdf", cancellationToken: ct);
var done = await client.Jobs.WaitForCompletionAsync(job.Id, new WaitOptions { Timeout = TimeSpan.FromMinutes(5) }, ct);

if (done.State == JobStates.Failed)               // a failed job is returned, not thrown
    throw new InvalidOperationException($"{done.Error!.Code}: {done.Error.Message}");

// "completed" means processing finished; the machine gate is a separate value.
Console.WriteLine($"PDF/UA machine check: {done.Validation?.Status}"); // passed | failed | error | not_run
Console.WriteLine($"Manual review required: {done.ManualReviewRequired}"); // always true

foreach (var finding in await client.Jobs.ListFindingsAsync(job.Id, ct))
    Console.WriteLine($"{finding.RuleId}: {finding.Message}");

foreach (var artifact in await client.Jobs.ListArtifactsAsync(job.Id, ct))
{
    await using var file = File.Create(artifact.Kind + ".bin");
    await client.Artifacts.DownloadAsync(artifact, file, ct); // SHA-256 verified
}

completed only says processing finished. Read validation.status for the PDF/UA machine check (passed, failed, error or not_run), the findings for what was verified, and remember that manualReviewRequired stays true: no result is a PDF/UA or WCAG conformance statement.

Also available on this surface

• HtmlToPdf.CreateJobAsync
• Web.CreateScanAsync
• Jobs.GetReadingOrderAsync
• Jobs.RemediateReadingOrderAsync
• ClientSessions.CreateAsync