---
title: "Exchange HTTP signature for Registry JWT"
method: POST
path: "/v0/auth/http"
tags: ["auth"]
---

# Exchange HTTP signature for Registry JWT

`POST /v0/auth/http`

Authenticate using HTTP-hosted public key and signed timestamp

## Request body

- SignatureTokenExchangeInput
  - `domain` string, required — Domain name
  - `signed_timestamp` string, required — Hex-encoded signature of timestamp
  - `timestamp` string, required — RFC3339 timestamp

## Response `200`

OK

- TokenResponse
  - `expires_at` integer, required
  - `registry_token` string, required

## Other responses

- `default` — Error

## Changes

- **2026-03-02** `cd40eb4cf442` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/agentregistry-dev/apis/agentregistry/changes/v0/auth/http/post.md)

---

[API](https://skmtc.dev/agentregistry-dev/apis/agentregistry.md) · [All operations](https://skmtc.dev/agentregistry-dev/apis/agentregistry/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/agentregistry-dev/agentregistry/revisions/cd40eb4cf442/schema)