# REST Client

**Canonical:** https://apis.io/providers/rest-client/  
**Website:** https://marketplace.visualstudio.com/items?itemName=humao.rest-client  
**APIs profiled:** 1

REST Client is a Visual Studio Code extension developed by Huachao Mao that enables developers to send HTTP requests and view responses directly within the VS Code editor. It supports RFC 2616 HTTP request format using .http and .rest files, GraphQL queries, cURL commands, multiple authentication schemes (Basic, Digest, SSL Client Certificates, Azure AD, AWS Signature v4, AWS Cognito), environment and file variables, request chaining, cookie management, code generation to multiple languages, and response saving. The extension is installed via the VS Code Marketplace under the identifier humao.rest-client and is widely used as a lightweight alternative to dedicated API clients like Postman and Insomnia.

## Kin Score — 21.3 / 100 (emerging)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 21.3).

| Facet | Score |
|---|---|
| Discoverability | 59.3 |
| Contract Quality | 23.9 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 3.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (1)

- **REST Client** — REST Client is a Visual Studio Code extension for sending HTTP requests and viewing responses directly within the editor. It supports .http and .rest file formats, GraphQL, cURL...

## Security (1)

- **Rest Client Domain Security** — TLSv1.3

## Plans (1)

- **Rest Client Plans Pricing**

## Tags

Clients, HTTP Client, IDE Extension, VS Code, API Testing

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/rest-client/). Scores are computed from the provider's own public artifacts under a published rubric.