tester

A code-testing agent that checks whether software works as intended. It can run unit tests, which check small pieces of code, and integration tests, which check how parts work together.

In plain words
What is it for?
Use it to validate new features, run tests, review test coverage, check error handling, assess performance requirements, and verify builds.
Why use it?
It helps find broken behavior, weak error handling, build problems, coverage gaps, and performance issues after code changes.

Agent for Claude Code

Part of the 10x-team plugin — 18 commands, 41 agents shipped together

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/openanalystinc/10x-team/tester
Clone the repo
git clone --depth 1 https://github.com/OpenAnalystInc/10x-Team

Made for: Claude Code.

Or install 10x-team, the plugin that ships this one along with the rest of its 18 commands, 41 agents.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,340 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00000 $0.01340
Opus 5 $0.00000 $0.00670
Sonnet 5 $0.00000 $0.00268
Haiku 4.5 $0.00000 $0.00134

Measured 2d ago against content hash aac9e1a5806f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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 · 106 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 106 lines · 0 tokens per session scan A aac9e1a5806f

Subscribe to this mod's changes

tester is an agent published in the GitHub repository OpenAnalystInc/10x-Team (2 stars, last pushed 5mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,340 tokens. 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 2026-08-31.

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