---
title: ClientInfo
summary: API reference for ClientInfo.
status: draft
owner: bendy
last_reviewed: 2026-09-15
library: SAIF.Web.API.Clients.35
reference_type: package
---

# ClientInfo

`ClientInfo` is the caller-identity data carrier passed into `JsonHttpClient`'s constructor. Its three properties are copied verbatim onto the `Client-Name`, `Application-ID`, and `Client-User` headers of every outbound request ([BR-01](../../business-rules.md#br-01-identity-headers-on-every-request)), giving the receiving SAIF Web API an unauthenticated but consistent identification of the calling machine, application, and user.

## Purpose
- Carry the calling machine name, application identifier, and user identifier that `JsonHttpClient` emits as identity headers on every request.

## Context
- Namespace: `SAIF.Web.API.Clients`
- Assembly/package: `SAIF.Web.API.Clients` (net35 build variant; not shipped by the current package definition — see [Overview](../../overview.md))

## Public members
| Member | Signature | Purpose |
| --- | --- | --- |
| `MachineName` | `public string MachineName { get; set; }` | Value emitted as the `Client-Name` request header, identifying the calling machine. |
| `ApplicationId` | `public string ApplicationId { get; set; }` | Value emitted as the `Application-ID` request header, identifying the calling application. |
| `UserId` | `public string UserId { get; set; }` | Value emitted as the `Client-User` request header, identifying the calling user. |

## Behavioral notes
- These values are unauthenticated, caller-supplied identification, not proof of identity; the receiving API cannot rely on them for authorization decisions.*

## Constraints and usage notes
- Populate all three properties before constructing `JsonHttpClient`, since `GetJsonResponse` reads them unconditionally when building identity headers.

> **Note:** Statements marked with `*` were inferred from code structure, naming conventions, or
> contextual evidence where direct confirmation was not available in source artifacts.

## Sources
- src/SAIF.Web.API.Clients/ClientInfo.cs