MockHero MCP Server

by dinosaur24 Your server? Claim it

not responding

MockHero is listed as active in the registry but did not answer our last check. 41 installs a week from npm. It exposes 9 tools. Last commit 9 Jul 2026.

Generate realistic relational test data — 156 field types, 22 locales, JSON/CSV/SQL, free previews.

Installs per day peak 14 · avg 6 · +91% w/w

a month agotoday

Uptime history 48 days of history · worst day 0%

48 days agonow

4.3%

Uptime 24h

4 of 92 checks

Tools

read from the server

999 ms

Response time

average over 24h

Installs / week

npm and PyPI

MockHero does not always answer

Over the last week it answered 12.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mockhero --transport http https://mockhero.dev/mcp/agent

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mockhero": {
      "url": "https://mockhero.dev/mcp/agent"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mockhero]
url = "https://mockhero.dev/mcp/agent"

.cursor/mcp.json

{
  "mcpServers": {
    "mockhero": {
      "url": "https://mockhero.dev/mcp/agent"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mockhero": {
      "url": "https://mockhero.dev/mcp/agent"
    }
  }
}

This one needs environment variables set before it will start: MOCKHERO_API_KEY (MockHero API key (optional — without it, generation runs as a free preview up to 100 records per request; get a key at https://mockhero.dev or via the create_agent_checkout tool)), MOCKHERO_API_BASE (Base URL of the MockHero API (default https://mockhero.dev)). The author declared them in the registry entry; get the values from the project itself.

Available tools 9

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

agent

check_agent_checkout_status

Poll a Polar checkout created by create_agent_checkout using the returned claim_token.

create_agent_checkout

Create a loginless Polar Checkout URL for MockHero's metered agent plan. Polar is the Merchant of Record for checkout, tax collection, and remittance. The card payment step needs a human: present the returned url to your operator together with the estimate_agent_usage cost, keep the claim_token private, then poll check_agent_checkout_status and call claim_agent_api_key once paid.

generate

generate_from_template

Generate realistic test data from a pre-built MockHero template: ecommerce, blog, saas, or social. Small template previews up to 100 records can run free; larger or production usage requires a MockHero API key.

generate_test_data

Generate realistic JSON, CSV, or SQL test data from structured tables or a plain-English prompt. Explicit table schemas up to 100 records can run free as a proof-of-work preview; plain-English prompt generation, larger requests, and production usage require a MockHero API key.

claim

claim_agent_api_key

Claim the MockHero API key after Polar marks the loginless agent checkout as paid. The key is returned once.

detect

detect_schema

Convert SQL CREATE TABLE statements or one sample JSON object into a MockHero schema that can be passed to generate_test_data.

estimate

estimate_agent_usage

Estimate MockHero agent-plan cost before generating data. No login or API key is required; include an API key only when you want the estimate to use actual daily usage.

field

list_field_types

List MockHero field types, descriptions, parameters, and examples before building a schema.

templates

list_templates

List MockHero's pre-built schema templates for ecommerce, blog, SaaS, and social apps.

Endpoints

URL	Transport	State	Latency	Checked
https://mockhero.dev/mcp/agent	streamable-http	answering	90 ms	0 min ago

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MockHero — questions

Answers built from our own checks of this server.

What can MockHero do?

It exposes 9 tools, read directly from the server on our last check. Among them: check_agent_checkout_status, claim_agent_api_key, create_agent_checkout, detect_schema, estimate_agent_usage, generate_from_template and 3 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is MockHero mostly used for?

Its tools cluster around generate and agent. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is MockHero working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 4 of 92 checks got a reply (4.3%), average response time 999 ms. The bar chart above shows every period we have measured.

The registry lists MockHero as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect MockHero?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does MockHero need an API key?

No. MockHero completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 9 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is MockHero?

It answers our handshake in 999 ms on average, which is faster than 9% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use MockHero?

The npm package @mockherodev/mcp-server was installed 41 times in the last week. Week over week that is +91%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is MockHero open source?

Yes — it is published under the MIT licence, written in TypeScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.