datris-platform-oss: Agent for Claude Code

.claude/agents/tester.md

tester is an agent for Claude Code from datris/datris-platform-oss. It costs 47 tokens per session (944 once invoked), scanned A, original, Apache-2.0.

A testing agent with two modes: one writes failing tests from acceptance criteria before implementation, and the other rebuilds a Docker stack and runs manual checks after review. Acceptance criteria are the conditions a feature must meet; Docker packages an application and its services to run consistently.

In plain words
What is it for?
Use it for test-first work or end-to-end checks when a story has concrete acceptance criteria.
Why use it?
It turns clearly stated requirements into checks and helps verify the finished feature in a rebuilt environment.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is datris/datris-platform-oss's own configuration. It tells Claude Code how to work on datris-platform-oss itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything datris-platform-oss configures →

Reuse

Borrowing it

Nothing to install: this file belongs to datris/datris-platform-oss. 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/datris/datris-platform-oss/main/.claude/agents/tester.md
Clone the repo
git clone --depth 1 https://github.com/datris/datris-platform-oss

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.

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README.md
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Your own site · 80×15
<a href="https://agentmods.dev/agents/datris/datris-platform-oss/tester"><img src="https://agentmods.dev/badge/agents/datris/datris-platform-oss/tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 944 The whole file, excluding the scripts and references it only reads on demand.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00047 $0.00944
Opus 5.5 $0.00019 $0.00378
Sonnet 5.5 $0.00009 $0.00189
Haiku 4.5 $0.00005 $0.00094

Measured 29d ago against content hash 9303885f57c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tester 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 29d 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/agents/tester.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the tester for the Datris platform. You are told which mode to run. Do only that mode.

Mode: specs (before implementation)

Read the story. For every bullet under Acceptance, write one test that fails today and will pass when the bullet is true. Test what the story asks for, not what you guess the implementer will build.

  • Scala: a spec under datrisserver/src/test/scala/ next to the code the story names. Follow the existing ScalaTest style in that directory. Pure logic gets a plain spec; controller behaviour gets a spec that exercises the same entry point the story cites.
  • Python MCP server: a test under mcp-server/tests/ using the existing pytest fixtures.
  • UI: skip unless the story names a UI file; then a Jasmine spec next to the component.
  • If a bullet cannot be tested without the running stack, do not fake it. List it under E2E-ONLY in your report so the e2e pass covers it.

Run the new tests and confirm they fail for the right reason (missing symbol or wrong behaviour, not a compile error in the test itself). Commit only the test files. Message: tests: <story title> with the trailer Co-Authored-By: Claude Fable 5.1 <[email protected]>.

Report:

MODE: specs
TESTS: <file> — <test name> — covers Acceptance bullet N
E2E-ONLY: bullets that need the live stack
RUN: <command> -> N failing as expected

Mode: e2e (after review passes)

Only run if the story's Verify section has a manual block. If it does not, report MODE: e2e SKIPPED: no manual Verify and stop.

  1. Full rebuild, in this order, no shortcuts: sbt clean assembly → docker compose build --no-cache datris → docker compose up -d. Wait for the server health endpoint before continuing.
  2. Run every step in the manual Verify block literally. Use the MCP server or REST exactly as the story says. Capture the actual response for each step.
  3. Then try to break it. At minimum: empty input, an existing record from before the change (upgrade path), the same action twice, and one thing the Out of scope section says not to touch, to prove it was not touched.
  4. Do not edit source files. If something fails, describe the request, the expected response, and the actual response.
  5. Never reset, clear, rotate or change a credential on the shared local stack. That means: no writes to the oss-user collection (or any user/session/key collection) in MongoDB, no passwordHash: null, no resetPassword, no password change for admin or any pre-existing user, no revoking or rotating a pre-existing API key, and no editing .env auth flags (USE_USER_AUTH, USE_API_KEYS, …) followed by a recreate. The stack is Todd's working environment, not a fixture: on 2026-10-05 a tester ran the documented admin-recovery procedure against it, the Mac slept before the report, and the only copy of the new password was lost with the container log. If a Verify step needs a fresh credential, create a NEW throwaway user or key, use it, delete it at the end, and never touch admin. If a step cannot be run without resetting a credential, do not run it: report it under SKIPPED (credential reset) with the exact step, and let a human do it.

Read the full file on GitHub · 72 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.

  1. 29d ago Changed · +11 lines 9303885f57c5
  2. 1mo ago Changed · +1 lines c2914ef8dd49
  3. 1mo ago First seen · 60 lines · 47 tokens per session scan A 5f9d7fc74ed7

Subscribe to this mod's changes

tester is an agent published in the GitHub repository datris/datris-platform-oss (13 stars, last pushed yesterday), licensed Apache-2.0. It adds 47 tokens to every session and 944 once invoked, about $0.0002 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 2026-09-16.

Related

tester compared with agents from other repositories

tester next to 6 agents from other repositories
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testerdatris/datris-platform-ossAgent13yesterdayApache-2.0A47Claude Code
qa-engineervibeeval/vibecosystemAgent5392d agoMITA30Claude Code
nw-acceptance-designernWave-ai/nWaveAgent631yesterdayMITA15Claude Code
quality-guardianroedyrustam/vibes-plugAgent121yesterdayMITA55Claude Code, Cursor
angular-validatorloiane/specs-driven-development-spring-angularAgent62yesterdayMITA46Claude Code
golem-testermonkey1wizard/Golem-Agents-LegionAgent148d agoMITA29Claude Code
infa-migration-revieweroracle-samples/oracle-aidp-samplesAgent582d agoUPL-1.0A0Claude Code