Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/addxai/enterprise-harness-engineeringnpx agentmods add skills/addxai/enterprise-harness-engineering/mock-engineWrote 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.
[](https://agentmods.dev/skills/addxai/enterprise-harness-engineering/mock-engine)<a href="https://agentmods.dev/skills/addxai/enterprise-harness-engineering/mock-engine"><img src="https://agentmods.dev/badge/skills/addxai/enterprise-harness-engineering/mock-engine.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00063 | $0.01970 |
| Opus 5 | $0.00032 | $0.00985 |
| Sonnet 5 | $0.00013 | $0.00394 |
| Haiku 4.5 | $0.00006 | $0.00197 |
Grade C, and why
mock-engine scanned grade C with 2 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 7d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl http://localhost:19999/__admin/mappings | python3 -m json.tool Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl http://localhost:19999/__admin/mappings | python3 -m json.tool How it starts
The opening of the file, as written. The whole thing — 268 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mock Engine — Local Development Mock Environment Management
Provides unified mock infrastructure (MySQL, Redis, Kafka, MQTT, LocalStack, WireMock) via Docker Compose, supporting local development and integration testing.
Description
Applicable scenarios:
- Start/stop mock environment:
make mock-upone-command launch of all dependency services - Load test data: Base fixtures auto-load; scenario fixtures load on demand
- Create test scenarios: Prepare preset data (SQL + Redis + WireMock stubs) for specific business flows
- Troubleshoot startup issues: Container status checks, port conflicts, data loading failures
- Integration testing: Manage mock infrastructure in automated tests via Java SDK or Go SDK
Prerequisites:
- Docker Compose v2.20+ (verify with
docker compose version) - A
mock/directory exists at the project root (containing docker-compose.yml and Makefile) - If there is no
mock/directory, initialize from the mock-engine template:cp -r /path/to/mock-engine/core/templates/mock/ ./mock/ # Modify project configuration in mock/Makefile (database name, password, etc.)
Rules
Operational Flow
First-time initialization:
cd mock/
make mock-init # Download compose fragments
Start Mock environment:
make mock-up # Start all services + wait for health checks + load data
make mock-status # Verify all services are running normally
Start the application (backend-service example):
# The appName environment variable must be set
appName=your-app mvn spring-boot:run \
-pl your-app \
-Dspring-boot.run.profiles=dev-local,mock
Load a test scenario:
make mock-scenario SCENARIO=user-registration
# View available scenarios:
ls fixtures/scenarios/
Stop/reset:
make mock-down # Stop services (preserve data)
make mock-clean # Stop + delete data volumes
make mock-reset # Full reset (clean + init + up)
Default Port Mapping
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.
- 7d ago First seen · 268 lines · 63 tokens per session scan C a68897561e73
mock-engine is a skill published in the GitHub repository addxai/enterprise-harness-engineering (44 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 63 tokens to every session and 1,970 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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