What is mockd CLAUDE.md?

Project instructions for mockd, a single program that creates test versions of APIs such as HTTP, GraphQL, gRPC, WebSocket, MQTT, SSE, and SOAP. They also describe its MCP server, which lets AI assistants manage those test APIs.

Using mockd through its command-line interface or MCP tools; creating, changing, debugging, importing, exporting, and checking API mocks and captured traffic.

They give an AI coding assistant the project-specific facts and commands needed to work with mockd correctly. This avoids guessing how to configure ports, workspaces, mocks, imports, exports, and request logs.

How getmockd/mockd configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to getmockd/mockd. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/getmockd/mockd/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/getmockd/mockd

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/getmockd/mockd/claude-md/github.svg)](https://agentmods.dev/instructions/getmockd/mockd/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/getmockd/mockd/claude-md"><img src="https://agentmods.dev/badge/instructions/getmockd/mockd/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/getmockd/mockd/claude-md"><img src="https://agentmods.dev/badge/instructions/getmockd/mockd/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,689 This file is loaded in full into every session.

When invoked 2,689 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.02689	$0.02689
Opus 5.5	$0.01076	$0.01076
Sonnet 5.5	$0.00538	$0.00538
Haiku 4.5	$0.00269	$0.00269

Measured 2mo ago against content hash 6516ab0bf1d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mockd CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 223 lines

How it starts

The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mockd — AI Agent Instructions

Copy this file to .claude/mockd.md in your project root for Claude Code, or adapt for other AI assistants.

What is mockd?

mockd is a multi-protocol API mock server. It mocks HTTP, GraphQL, gRPC, WebSocket, MQTT, SSE, and SOAP from a single binary. It has a built-in MCP server with 18 tools — you can create, manage, and debug mocks directly via MCP without CLI commands.

MCP Server

mockd has an MCP server. If it's configured in your MCP settings, use the MCP tools directly:

manage_mock — Create, list, get, update, delete, or toggle mocks (action parameter)
manage_context — View or switch admin server context (action: get/switch; name for switch)
manage_workspace — List, switch, or create workspaces (action: list/switch/create; id, name)
import_mocks — Import from OpenAPI, Postman, HAR, WireMock, cURL, WSDL, Mockoon, or YAML
export_mocks — Export all mocks as YAML/JSON
get_server_status — Health check, ports, and statistics (no params)
get_request_logs — See all captured traffic (limit, offset, method, pathPrefix, mockId, protocol, unmatchedOnly)
clear_request_logs — Remove all captured request/response logs (no params)
get_chaos_config — Current chaos fault injection config and statistics (no params)
set_chaos_config — Inject latency, errors, apply chaos profiles, or configure advanced rules (circuit breaker, retry-after, progressive degradation)
reset_chaos_stats — Reset chaos counters to zero without changing config (no params)
get_stateful_faults — View circuit breaker, retry-after, and progressive degradation state
manage_circuit_breaker — Trip or reset circuit breakers manually (action: trip/reset; key)
verify_mock — Assert a mock was called N times (id, expected_count, at_least, at_most)
get_mock_invocations — See what requests hit a mock (id, limit)
reset_verification — Clear invocation records and counters for one mock or all (id optional, omit for all)
manage_state — CRUD stateful resources (action: overview/add_resource/list_items/get_item/create_item/reset/delete_resource; resource, item_id, data, seed_data, etc.)
manage_custom_operation — Manage custom operations on stateful resources (action: list/get/register/delete/execute; name, definition, input)

Read the full file on GitHub · 223 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 223 lines · 2,689 tokens per session scan A 6516ab0bf1d3

Subscribe to this mod's changes

mockd CLAUDE.md is an instructions file published in the GitHub repository getmockd/mockd (155 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 2,689 tokens to every session, about $0.0108 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Go api-mocking cli developer-tools graphql grpc

mockd CLAUDE.md next to 6 instructions from other repositories
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mockd: Instructions file for Claude Code