What can you do with this server?

The rest_api_mcp server acts as an authenticated REST API bridge for AI agents, automating login, endpoint discovery, and API calls. * Make authenticated requests (request): Execute HTTP calls (GET, POST, PUT, PATCH, DELETE) with automatic login, transparent token refresh on expiry, custom headers, optional request body, and the ability to skip auth for public endpoints. * Search endpoints (search_endpoints): Fuzzy-search the API spec by keyword across path, method, summary, description, tags, and operationId — useful when you don't know the exact endpoint path. * Describe an endpoint (describe_endpoint): View full schema for a specific endpoint — parameters, request body, response schemas, and a generated example request body. * Fetch the full spec (fetch_spec): Retrieve the complete OpenAPI/Swagger JSON for schema and endpoint discovery. * Inspect login flow (inspect_login): Debug authentication by viewing raw login responses and getting suggestions for token/session field paths when auto-detection fails. * 2FA support: Handles multi-step login flows with OTP verification and session identifier forwarding. * Flexible auth: Supports extra login fields (e.g., role, source), custom token path overrides, and access to login_data (e.g., IDs returned at login time). * Multi-API support: Run multiple independent API instances in a single configuration. * Dev-friendly options: SSL verification bypass and configurable response truncation limits.

Which integrations are available for this server?

Provides tools for interacting with REST APIs that have OpenAPI/Swagger specifications, enabling AI agents to automatically discover endpoints, authenticate, and make authenticated API calls with support for standard login, 2FA, and extra credential fields.

de en es ja ko ru zh

rest_api_mcp

by Muhammed-AbdelGhany

Overview Schema Source Related Servers Discussions Admin

JavaScript

Remote

rest-api-mcp

A Model Context Protocol (MCP) server for authenticated REST APIs.
Drop it into any project, point it at your API, and let AI agents call endpoints — with auto-login, 2FA support, Swagger spec fetch, and fuzzy endpoint search — all without writing a single line of auth code.

Related MCP server: OpenAPI MCP Server

Features

Capability	Description
Auto-login	Logs in automatically before every request; re-logins when token expires
Token caching	20-second TTL cache — survives rapid sequential calls
Auto-discovery	Finds the login endpoint by scanning the Swagger spec (no config needed)
Auto token detection	Tries 9 common token paths (`data.access_token`, `accessToken`, `token`, …)
AI-driven token detection	`inspect_login` tool exposes raw responses + heuristic suggestions so the AI can pick the exact token path
2FA / OTP support	Two-step auth: login → verify-otp, session identifiers forwarded automatically
Custom session fields	Override hardcoded session candidates via `verify_session_fields` in `request()`
Extra login fields	`source`, `userRole`, `channel`, `device_id` — any field, via JSON env var
Fuzzy endpoint search	Find endpoints by keyword across path, summary, description, tags, operationId
Swagger spec fetch	Retrieve and inspect the full OpenAPI spec
SSL bypass	Optional for staging/dev environments with self-signed certs
Response truncation	Configurable size limit to keep responses in context

Installation

Option A — Use via npx (recommended)

No installation needed. Add this to your project's .vscode/mcp.json and VS Code will download and run the package automatically:

{
  "command": "npx",
  "args": ["-y", "rest-api-mcp"]
}

This always uses the latest published version from npm. See VS Code mcp.json Examples for a full config.

Option B — Use locally (for development / offline)

git clone https://github.com/Muhammed-AbdelGhany/rest_api_mcp
cd rest_api_mcp
npm install && npm run build

Then point VS Code at the local build:

{
  "command": "node",
  "args": ["/path/to/rest_api_mcp/build/index.js"]
}

Quick Start

Add this to your project's .vscode/mcp.json:

{
  "servers": {
    "my-api": {
      "command": "npx",
      "args": ["-y", "rest-api-mcp"],
      "env": {
        "REST_BASE_URL": "https://api.example.com/api/v1",
        "API_EMAIL": "user@example.com",
        "API_PASSWORD": "yourpassword",
        "API_SWAGGER_URL": "https://api.example.com/docs-json"
      }
    }
  }
}

That's it. The agent can now:

Search for endpoints by keyword
Call any endpoint with automatic authentication
Fetch the full OpenAPI spec for schema inspection

Configuration

All configuration is done via environment variables in mcp.json. No code changes required.

Minimum required

Variable	Description
`REST_BASE_URL`	Base URL of the API (no trailing slash)
`API_EMAIL`	Login email
`API_PASSWORD`	Login password

Strongly recommended

Variable	Description
`API_SWAGGER_URL`	OpenAPI/Swagger JSON URL — enables `fetch_spec`, `search_endpoints`, and auto-login-endpoint discovery

Optional

See Environment Variables Reference for the full list.

Tools

`search_endpoints`

Fuzzy-search the API spec by keyword. Returns matching endpoints with method, path, summary, tags, and required parameters. Use this before request when you don't know the exact path.

Input:

Field	Type	Required	Description
`query`	string	✅	Keywords to search for
`limit`	number	❌	Max results (default: 10)

Example — Find order-related endpoints:

search_endpoints("orders list customer")

Response:

Found 6 match(es) for "orders list customer", showing top 5:

1. GET /customers/{id}/orders
   Summary: List all orders for a customer
   Tags: Orders, Customers
   Required params: path:id

2. GET /orders
   Summary: List orders with optional filters
   Tags: Orders
   Required params: query:status, query:page

3. POST /orders/search
   Summary: Search orders by multiple criteria
   Tags: Orders
   Required params: body
...

`describe_endpoint`

Returns the full OpenAPI schema for a single endpoint: parameters, request body schema (with types, required flags, enums, examples), response schemas, and a generated example request body. Use this before request() when you need to know exactly what fields to include in the body or what response shape to expect.

Input:

Field	Type	Required	Description
`method`	string	✅	`GET`, `POST`, `PUT`, `PATCH`, `DELETE`
`endpoint`	string	✅	Path relative to `REST_BASE_URL`, e.g. `/inspections`

Example — Inspect a POST endpoint before calling it:

describe_endpoint("POST", "/pharmacy/add-manager")

Response:

{
  "method": "POST",
  "path": "/pharmacy/add-manager",
  "summary": "Add a manager to a pharmacy",
  "parameters": [
    { "name": "pharmacyId", "in": "path", "required": true, "type": "string" }
  ],
  "requestBody": {
    "contentType": "application/json",
    "schema": {
      "type": "object",
      "properties": {
        "first_name": { "type": "string", "required": true },
        "email": { "type": "string", "required": true },
        "gender": { "type": "string", "enum": ["male", "female"], "required": true },
        "start_date": { "type": "string", "format": "date-time", "required": true }
      }
    },
    "example": {
      "first_name": "First name",
      "email": "manager@example.com",
      "gender": "male",
      "start_date": "2026-05-04T12:00:00Z"
    }
  },
  "responses": {
    "201": {
      "description": "Manager added successfully",
      "schema": { "type": "object", "properties": { "id": { "type": "number" } } },
      "example": { "id": 42 }
    }
  }
}

The AI can now call request() with the exact body shape, no guessing required.

`request`

Make an authenticated API call. Handles login automatically — re-logins transparently if the token is expired.

Input:

Field	Type	Required	Description
`method`	string	✅	`GET`, `POST`, `PUT`, `PATCH`, `DELETE`
`endpoint`	string	✅	Path relative to `REST_BASE_URL`, e.g. `/users/profile`
`body`	object	❌	Request body for POST/PUT/PATCH
`headers`	object	❌	Extra headers to merge
`skip_auth`	boolean	❌	Set `true` to skip the `Authorization` header
`token_path`	string	❌	Dot-notation path to the token in the login/verify response (e.g. `data.result.accessToken`). Overrides auto-detection and is cached for re-logins.
`verify_session_fields`	object	❌	Map of verify-body field names → dot-notation paths in the step-1 login response. Example: `{"sessionId": "data.result.sessionId"}`. Overrides hardcoded candidates and is cached for re-logins.

Response shape:

{
  "status": 200,
  "statusText": "OK",
  "timing_ms": 312,
  "login_data": { ... },
  "response": { ... }
}

login_data contains the full login response — useful for IDs like userId, orgId, tenantId returned at login that you need for subsequent requests.

Example — GET current user profile:

request("GET", "/users/me")

Example — POST with filters:

request("POST", "/orders/search", {
  "status": "pending",
  "from": "2025-01-01",
  "limit": 20
})

Example — PATCH to update a resource:

request("PATCH", "/products/42", {
  "price": 9.99,
  "inStock": true
})

Example — Public endpoint (no auth):

request("GET", "/health", skip_auth=true)

Example — Custom token path (when auto-detection fails):

request("GET", "/orders", token_path="result.data.jwtToken")

Example — Custom 2FA session fields:

request("GET", "/orders",
  token_path="data.result.accessToken",
  verify_session_fields={"sessionId": "data.result.sessionId", "requestToken": "data.result.requestToken"}
)

`inspect_login`

Performs the login flow (and optional 2FA verify) and returns the raw server responses without extracting a token. Also returns heuristic suggestions for:

Token paths (fields that look like JWTs or long auth strings)
Session fields (fields that look like session identifiers for 2FA verify)

Use this when auto-detection fails so the AI can identify the correct token_path and verify_session_fields to pass to request().

No input required.

Example — when request() fails with "Could not find token":

inspect_login()

Response:

{
  "step1": { "status": 200, "data": { "result": { "customJwt": "eyJ...", "sessionId": "abc" } } },
  "step2": null,
  "token_suggestions": [
    { "path": "result.customJwt", "value_preview": "eyJhbGciOiJIUzI1Ni...", "confidence": 4 }
  ],
  "session_field_suggestions": [
    { "path": "result.sessionId", "key": "sessionId", "value_preview": "abc" }
  ],
  "note": "Use token_path and verify_session_fields in your next request() call."
}

Then call request() with the AI-discovered path:

request("GET", "/orders", token_path="result.customJwt")

The server caches the AI-provided token_path and verify_session_fields so re-logins (after token expiry) use them automatically.

`fetch_spec`

Fetch the full OpenAPI/Swagger JSON spec for schema inspection, DTO discovery, or understanding available endpoints.

Input:

Field	Type	Required	Description
`url`	string	❌	Override spec URL. Falls back to `API_SWAGGER_URL` env var

Example:

fetch_spec()

Returns the raw OpenAPI JSON (truncated to REST_RESPONSE_SIZE_LIMIT if large).

Authentication Flows

The most common case — email + password, token returned directly.

{
  "REST_BASE_URL": "https://api.example.com/api/v1",
  "API_EMAIL": "user@example.com",
  "API_PASSWORD": "secret",
  "API_SWAGGER_URL": "https://api.example.com/docs-json"
}

The server auto-discovers the login endpoint by scanning the Swagger spec for the first POST path containing "login". Override if needed:

"API_LOGIN_ENDPOINT": "/auth/sign-in"

Some APIs require fields beyond email and password in the login request body — for example a role to specify what type of user is logging in, a source to indicate which client platform is making the request, a channel, a tenantId, etc.

Set API_LOGIN_CREDENTIALS to a JSON object string containing any extra fields you need. They are merged into the login POST body alongside email and password:

"API_LOGIN_CREDENTIALS": "{\"role\": \"admin\"}"

What gets sent to the login endpoint:

{
  "email": "admin@acme.com",
  "password": "secret",
  "role": "admin"
}

Multiple extra fields work the same way:

"API_LOGIN_CREDENTIALS": "{\"role\": \"viewer\", \"source\": \"web\", \"tenantId\": \"acme\"}"

What gets sent:

{
  "email": "viewer@acme.com",
  "password": "secret",
  "role": "viewer",
  "source": "web",
  "tenantId": "acme"
}

Note: The field names are entirely up to your API. Check its Swagger spec or docs to see what the login endpoint accepts.

Two-factor authentication (2FA)

Some APIs require a second verification step after the initial login — the server returns a one-time code to the user's email or phone, and you must submit it to a separate endpoint to receive the actual JWT.

Flow:

Step 1 — Login
  POST /auth/login  { email, password }
  ← 200: { session_token: "tmp_abc", message: "OTP sent to email" }

Step 2 — Verify OTP
  POST /auth/verify-otp  { email, otp: "482019", session_token: "tmp_abc" }
  ← 200: { accessToken: "eyJhbGci..." }

The three env vars that drive this:

"API_VERIFY_ENDPOINT": "/auth/verify-otp",
"API_OTP": "482019",
"API_LOGIN_CREDENTIALS": "{\"platform\": \"web\"}"

API_VERIFY_ENDPOINT — The path of the second step. When this is set, the server automatically performs both steps before attaching a token to your request.

API_OTP — The OTP value to submit. For staging environments this is usually a fixed test code provided by the API team. For production you'd need to retrieve the live code from your email and set it here.

Session carry-forward — Session identifiers returned by login step 1 (e.g. session_token, requestId, temp_token, nonce, transactionId) are automatically detected and forwarded to the verify endpoint. You do not need to configure this manually.

The full body sent to the verify endpoint looks like:

{
  "email": "user@acme.com",
  "otp": "482019",
  "session_token": "tmp_abc"   ← auto-carried from step 1
}

API_VERIFY_CREDENTIALS — If your verify endpoint requires extra fields that aren't session identifiers or the OTP, add them here:

"API_VERIFY_CREDENTIALS": "{\"client_id\": \"web-app\"}"

What gets sent:

{
  "email": "user@acme.com",
  "otp": "482019",
  "session_token": "tmp_abc",
  "client_id": "web-app"    ← from API_VERIFY_CREDENTIALS
}

Multi-API Setup

Run multiple independent server instances — one per API — in the same mcp.json. Each instance runs its own auth session, token cache, and spec cache independently.

In this example, shop-api uses a simple role-based login and analytics-api uses 2FA:

{
  "servers": {
    "shop-api": {
      "command": "npx",
      "args": ["-y", "rest-api-mcp"],
      "env": {
        "REST_BASE_URL": "https://api.acme-shop.com/v1",
        "API_EMAIL": "admin@acme-shop.com",
        "API_PASSWORD": "s3cr3t",
        "API_LOGIN_CREDENTIALS": "{\"role\": \"admin\"}",
        "API_SWAGGER_URL": "https://api.acme-shop.com/docs-json"
      }
    },
    "analytics-api": {
      "command": "npx",
      "args": ["-y", "rest-api-mcp"],
      "env": {
        "REST_BASE_URL": "https://analytics.acme.com/api/v2",
        "API_EMAIL": "analyst@acme.com",
        "API_PASSWORD": "s3cr3t",
        "API_LOGIN_ENDPOINT": "/auth/sign-in",
        "API_VERIFY_ENDPOINT": "/auth/verify-otp",
        "API_OTP": "482019",
        "API_SWAGGER_URL": "https://analytics.acme.com/openapi.json"
      }
    }
  }
}

VS Code mcp.json Examples

Minimal

{
  "servers": {
    "my-api": {
      "command": "npx",
      "args": ["-y", "rest-api-mcp"],
      "env": {
        "REST_BASE_URL": "https://api.example.com/v1",
        "API_EMAIL": "user@example.com",
        "API_PASSWORD": "secret"
      }
    }
  }
}

Full (all options)

{
  "servers": {
    "my-api": {
      "command": "npx",
      "args": ["-y", "rest-api-mcp"],
      "env": {
        "REST_BASE_URL": "https://api.example.com/v1",
        "REST_ENABLE_SSL_VERIFY": "false",
        "REST_RESPONSE_SIZE_LIMIT": "150000",
        "API_EMAIL": "user@example.com",
        "API_PASSWORD": "secret",
        "API_LOGIN_ENDPOINT": "/auth/login",
        "API_LOGIN_CREDENTIALS": "{\"source\":\"mobile\"}",
        "API_VERIFY_ENDPOINT": "/auth/verify-otp",
        "API_OTP": "123456",
        "API_VERIFY_CREDENTIALS": "{\"device_id\":\"abc\"}",
        "API_TOKEN_PATH": "data.access_token",
        "API_SWAGGER_URL": "https://api.example.com/docs-json"
      }
    }
  }
}

How It Works

Agent says: "show me pending orders"
     │
     ▼
search_endpoints("orders pending list")
     │  Fetches Swagger spec, scores every endpoint by keyword match
     │  Returns: GET /orders  ← best match
     ▼
request("GET", "/orders?status=pending")
     │
     ├─ Token cache valid? ──yes──► attach Bearer token
     │
     └─ Cache expired/empty?
           │
           ├─ Step 1: POST /auth/login  {email, password, ...LOGIN_CREDENTIALS}
           │          ◄── 200: {data: {access_token: "eyJ..."}}
           │
           ├─ [if VERIFY_ENDPOINT set]
           │   Step 2: POST /auth/verify-otp  {email, otp, ...session_tokens}
           │            ◄── 200: {accessToken: "eyJ..."}
           │
           ├─ Auto-detect token path from response (or use AI-provided token_path)
           ├─ Cache token for 20s
           └─ attach Bearer token
     │
     ▼
GET /orders?status=pending
     Authorization: Bearer eyJ...
     ◄── 200: {total: 47, data: [{id: 1, status: "pending", ...}, ...]}

When auto-detection fails:

request("GET", "/orders")  ← "Could not find token"
     │
     ▼
inspect_login()
     │  Returns raw login response + token/session suggestions
     ▼
request("GET", "/orders", token_path="data.result.jwt")
     │  Token path cached for future re-logins
     ▼
✅ Success

Environment Variables Reference

Variable	Required	Default	Description
`REST_BASE_URL`	✅	—	Base API URL, no trailing slash
`API_EMAIL`	✅*	—	Login email (*required for authenticated endpoints)
`API_PASSWORD`	✅*	—	Login password
`API_SWAGGER_URL`	—	—	OpenAPI JSON URL for `fetch_spec`, `search_endpoints`, and login auto-discovery
`API_LOGIN_ENDPOINT`	—	auto-discovered	Override login path, e.g. `/auth/sign-in`
`API_LOGIN_CREDENTIALS`	—	—	JSON object of extra fields merged into the login POST body alongside `email`/`password`. Use for `role`, `source`, `tenantId`, etc. Example: `{"role":"admin"}`
`API_VERIFY_ENDPOINT`	—	—	Path of the 2FA/OTP verify step. Setting this enables two-step auth. Example: `/auth/verify-otp`
`API_OTP`	—	—	The OTP code to submit to `API_VERIFY_ENDPOINT`. On staging this is typically a fixed test code.
`API_VERIFY_CREDENTIALS`	—	—	JSON object of extra fields merged into the verify POST body, beyond the auto-carried session identifiers and OTP. Example: `{"client_id":"web-app"}`
`API_TOKEN_PATH`	—	auto-detected	Dot-path to token in login/verify response, e.g. `data.access_token`
`REST_ENABLE_SSL_VERIFY`	—	`true`	Set `false` to skip TLS cert validation (dev/staging only)
`REST_RESPONSE_SIZE_LIMIT`	—	`100000`	Max response characters before truncation

Auto-detected token paths (tried in order): data.access_token · access_token · data.token · token · data.accessToken · accessToken · data.data.access_token · result.access_token · result.token

If none match, use inspect_login() to discover the correct path and pass it via token_path.

Auto-forwarded session fields (2FA step 1 → step 2): session_token · sessionToken · session · request_id · requestId · temp_token · tempToken · verification_token · verificationToken · challenge · nonce · transaction_id · transactionId

Override these via verify_session_fields when the API uses non-standard session field names.

Troubleshooting

Login failed: Could not find token
The login response uses an unusual token path. Use inspect_login() to see the raw response and heuristic suggestions, then pass the correct path to request():

inspect_login()                    ← see suggestions
request("GET", "/orders", token_path="result.data.jwt")

Alternatively, set API_TOKEN_PATH explicitly in env:

"API_TOKEN_PATH": "result.data.jwt"

2FA verify fails with 401
The verify endpoint may need the OTP as a different field name. Use API_VERIFY_CREDENTIALS:

"API_VERIFY_CREDENTIALS": "{\"code\": \"123456\"}"

And leave API_OTP unset if the field name isn't otp.

search_endpoints returns no matches

Make sure API_SWAGGER_URL is set and reachable
Try broader keywords: "inventory" instead of "getInventory"
The spec may be truncated — use fetch_spec to check

SSL errors on staging

"REST_ENABLE_SSL_VERIFY": "false"

Response truncated
Increase the limit:

"REST_RESPONSE_SIZE_LIMIT": "500000"

License

MIT

Available Tools

3 tools

fetch_specA

Fetches the OpenAPI/Swagger JSON spec for this API. Use this to discover endpoint paths, HTTP methods, and request body schemas before calling request().

Inputs: url.

requestA

Makes an authenticated API call. Handles login automatically — if the token is expired it re-logins transparently. Returns the full response body plus login_data (which contains IDs like pharmacyId returned from login).

Inputs: method (required), endpoint (required), body, headers, +1 more.

search_endpointsA

Fuzzy-search the API spec by keyword. Use this when you don't know the exact path. Searches across path, HTTP method, summary, description, tags, and operationId. Returns matching endpoints with their method, full path, summary, and required parameters.

Inputs: query (required), limit.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

Deploy Server

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TDQS

A4/5.0

Scored 2026-04-16 12:10 across 3 tools

Disambiguation5/5

Each tool has a clearly distinct purpose with no overlap: fetch_spec retrieves the API specification, request makes actual API calls, and search_endpoints provides discovery functionality. An agent can easily differentiate between these three distinct operations.

Naming Consistency5/5

All tools follow a consistent verb_noun pattern with snake_case: fetch_spec, request, and search_endpoints. The naming is predictable and readable throughout the set.

Tool Count3/5

With only 3 tools, the set feels thin for a general-purpose REST API server, as it lacks operations for common workflows like managing resources or handling specific endpoints directly. However, the tools are well-scoped for their intended discovery and request functions.

Completeness4/5

The tools cover core discovery and request-making needs (fetch spec, search, and execute calls), but there are minor gaps such as no direct tools for CRUD operations or error handling beyond automatic login. Agents can work around this by using request with discovered endpoints.

Maintenance

ActivityInactive

ResponsivenessLimited data

Resources

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rest-api-mcp

Table of Contents

Features

Installation

Option A — Use via npx (recommended)

Option B — Use locally (for development / offline)

Quick Start

Configuration

Minimum required

Strongly recommended

Optional

Tools

search_endpoints

describe_endpoint

request

inspect_login

fetch_spec

Authentication Flows

Standard login

Login with extra credentials

Two-factor authentication (2FA)

Multi-API Setup

VS Code mcp.json Examples

Minimal

Full (all options)

How It Works

Environment Variables Reference

Troubleshooting

License

Available Tools

Tool Schema Changelog

TDQS

Maintenance

Resources

Related MCP Connectors

Related MCP Servers

Swagger MCP

OpenAPI MCP Server

NyxID

mcpify

`search_endpoints`

`describe_endpoint`

`request`

`inspect_login`

`fetch_spec`