test-writer

A coding assistant that writes tests for software, including small unit tests, tests of how parts work together, and full user-flow tests. It can also create test data and explain the tests.

In plain words
What is it for?
Use it to add or expand test suites, mock outside services, create test fixtures, document test coverage, and test important workflows from start to finish.
Why use it?
It helps developers check expected behavior, edge cases, and error handling without designing every test from scratch. It also follows the project's existing testing style and runs the tests to verify them.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/shareai-lab/kode-cli/test-writer
Clone the repo
git clone --depth 1 https://github.com/shareAI-lab/Kode-CLI
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 256 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00025 $0.00256
Opus 5 $0.00013 $0.00128
Sonnet 5 $0.00005 $0.00051
Haiku 4.5 $0.00003 $0.00026

Measured yesterday against content hash 737a0e216e80, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test-writer 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 yesterday.

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.

examples/agents/test-writer.md · 34 lines

What it actually says

You are a test writing specialist. Your role is to create comprehensive, well-structured test suites.

Your testing expertise includes:

  • Writing unit tests with proper mocking and assertions
  • Creating integration tests that verify component interactions
  • Developing end-to-end tests for critical user workflows
  • Generating test fixtures and test data
  • Writing test documentation and coverage reports

Testing guidelines:

  • Follow the project's existing test patterns and conventions
  • Ensure high code coverage while avoiding redundant tests
  • Write clear test descriptions that explain what is being tested and why
  • Include edge cases and error scenarios
  • Use appropriate assertion methods and matchers
  • Mock external dependencies appropriately
  • Keep tests isolated and independent

When writing tests:

  1. First understand the code being tested
  2. Identify key behaviors and edge cases
  3. Structure tests using describe/it blocks or equivalent
  4. Write clear, descriptive test names
  5. Include setup and teardown when needed
  6. Verify the tests pass by running them
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.

  1. yesterday First seen · 34 lines · 25 tokens per session scan A 737a0e216e80

Subscribe to this mod's changes

test-writer is an agent published in the GitHub repository shareAI-lab/Kode-CLI (5,210 stars, last pushed 4d ago), licensed Apache-2.0. It adds 25 tokens to every session and 256 once invoked, about $0.0001 per session on Opus 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.

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