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Connect JSONPlaceholder to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Build and test data-driven agents without a real backend.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 21 capabilities

We ship only the actions that matter.

Capability set01 / 06

01-04

4 capabilities in this set.

Part of 21 available through JSONPlaceholder.

  1. 01

    Get post comments

    Retrieves all comments associated with a specific post ID.

  2. 02

    Get post

    Fetches the details of a single post using its ID.

  3. 03

    Get todo

    Gets the specific details for a single todo item.

  4. 04

    Get user albums

    Returns a list of albums belonging to a specific user.

Capability set02 / 06

05-08

4 capabilities in this set.

Part of 21 available through JSONPlaceholder.

  1. 05

    Create post

    Simulates the creation of a new post in the system.

  2. 06

    Delete post

    Simulates the removal of an existing post.

  3. 07

    Get album

    Fetches the details for a specific album by its ID.

  4. 08

    Get comment

    Retrieves the content of a single comment by its ID.

Capability set03 / 06

09-12

4 capabilities in this set.

Part of 21 available through JSONPlaceholder.

  1. 09

    Get album photos

    Fetches all photos contained within a specific album.

  2. 10

    Get photo

    Gets the metadata for a specific photo by its ID.

  3. 11

    Get user todos

    Retrieves the todo list for a specific user.

  4. 12

    List albums

    Returns a list of all available albums, with optional filtering by userId.

Capability set04 / 06

13-15

3 capabilities in this set.

Part of 21 available through JSONPlaceholder.

  1. 13

    Get user posts

    Fetches all posts authored by a specific user.

  2. 14

    Get user

    Retrieves the profile information for a specific user.

  3. 15

    List photos

    Returns a list of all photos, which can be filtered by albumId.

Capability set05 / 06

16-18

3 capabilities in this set.

Part of 21 available through JSONPlaceholder.

  1. 16

    List users

    Provides a list of all users in the system.

  2. 17

    Patch post

    Updates specific fields of an existing post.

  3. 18

    List comments

    Returns a list of comments, with the ability to filter by postId.

Capability set06 / 06

19-21

3 capabilities in this set.

Part of 21 available through JSONPlaceholder.

  1. 19

    List posts

    Returns a list of all posts, with optional filtering by userId.

  2. 20

    List todos

    Returns a list of all todos, which can be filtered by userId.

  3. 21

    Update post

    Replaces an existing post with a new version.

Real work

What teams actually run

01

Agent Logic Testing

Verify how your agent handles a sequence of API calls to retrieve user data and their associated posts.

02

CRUD Workflow Prototyping

Test if your agent can successfully create a post and then immediately retrieve it by ID.

03

Data Filtering Validation

Ensure your agent correctly applies filters when looking for specific todos or albums.

04

Error Handling Drills

Test how your agent reacts to requests for non-existent IDs or malformed data.

Automate a task

Put JSONPlaceholder to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

JSONPlaceholder works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put JSONPlaceholder to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

1065ms average. Fast in production.

JSONPlaceholder is checked daily against the live service.

Daily averagePeak 1244ms
Oct 3Today
Fastest day
881ms
Slowest day
1244ms
14-day trend
Stable-1%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 21 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of JSONPlaceholder, so you can see the experience inside your AI.

It does not authenticate your account with JSONPlaceholder. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

JSONPlaceholder Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_ohXeJdyomPPxcuW3YXJrFT1qXBIHrPlFiE1K9RoA/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — JSONPlaceholder capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "jsonplaceholder-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_ohXeJdyomPPxcuW3YXJrFT1qXBIHrPlFiE1K9RoA/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up JSONPlaceholder in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work JSONPlaceholder owners hand off.

This MCP is built for technical users who need to test agentic logic against structured data without the overhead of a real database.

  • 01

    MCP Developers

    They use this to verify that their clients handle capability calls and JSON responses correctly.

  • 02

    AI Researchers

    They use this to prototype complex agent behaviors using structured data.

  • 03

    Product Designers

    They use this to demonstrate AI workflows using realistic mock data.

FAQ

Questions JSONPlaceholder owners ask.

  • 01

    Do I need an API key for JSONPlaceholder?

    No API key is required for this public service. You can provide a placeholder string if your client prompts you for one.

  • 02

    Is the data saved when I create a post?

    No. Because this is a mock API, any data you create or update is not permanently stored.

  • 03

    Which AI clients can use this MCP?

    Any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.

  • 04

    Can I filter data by specific users?

    Yes. Many capabilities in this MCP, such as list_posts and list_todos, allow you to filter results by userId.

  • 05

    What kind of data is available?

    The MCP provides access to posts, comments, albums, photos, todos, and user profiles.

  • 06

    Can I filter posts by a specific user?

    Yes! Use the list_posts capability with the userId parameter to retrieve only the posts created by that specific user ID.

  • 07

    Does creating or updating a post actually save the data?

    No. JSONPlaceholder is a fake API. Capabilities like create_post, update_post, and delete_post simulate the response as if the action succeeded, but the server state remains unchanged.

  • 08

    How do I find comments for a specific post?

    Use the list_comments capability and provide the postId. This will return all comments associated with that specific post ID.

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