---
title: "Adds a new attestation policy certificate to the set of policy management certificates."
method: POST
path: "/certificates:add"
---

# Adds a new attestation policy certificate to the set of policy management certificates.

`POST /certificates:add`

Adds a new attestation policy certificate to the set of policy management
certificates.

## Query parameters

- `api-version` string, required

## Request body

- AddPolicyCertificateRequest — Request model for adding a policy certificate
  - `policyCertificateToAdd` string, required — The certificate to add, as a string (e.g., PEM or JWK)

## Response `200`

The request has succeeded.

- PolicyCertificatesModifyResponse — The response to an attestation policy management API
  - `token` string — An RFC7519 JSON Web Token structure whose body is a PolicyCertificatesModificationResult object.

## Other responses

- `default` — An unexpected error response.

## Changes

- **2026-07-13** (2018-09-01-preview) `74e240995f3e` — 1 info
  - api tag `Policy Management Certificates` removed
- **2026-07-13** (2018-09-01-preview) `e2463a10f80d` — 1 breaking
  - api path removed without deprecation
- **2026-07-13** (2018-09-01-preview) `cb7cc16888f7` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/azure/apis/attestation-attestation/changes/certificates:add/post.md)

---

[API](https://skmtc.dev/azure/apis/attestation-attestation.md) · [All operations](https://skmtc.dev/azure/apis/attestation-attestation/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/azure/attestation-attestation/revisions/74e240995f3e/schema)