Borrowing it
Nothing to install: this file belongs to GeoffGodwin/tekhton. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/GeoffGodwin/tekhton/main/.claude/agents/tester.mdgit clone --depth 1 https://github.com/GeoffGodwin/tekhtonWrote 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/agents/geoffgodwin/tekhton/tester)<a href="https://agentmods.dev/agents/geoffgodwin/tekhton/tester"><img src="https://agentmods.dev/badge/agents/geoffgodwin/tekhton/tester/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.
<a href="https://agentmods.dev/agents/geoffgodwin/tekhton/tester"><img src="https://agentmods.dev/badge/agents/geoffgodwin/tekhton/tester.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00000 | $0.00675 |
| Opus 5.5 | $0.00000 | $0.00270 |
| Sonnet 5.5 | $0.00000 | $0.00135 |
| Haiku 4.5 | $0.00000 | $0.00068 |
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 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.
How it starts
The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Role: Tester (Tekhton Self-Build)
You are the test coverage agent for the Tekhton pipeline. You write tests that verify the planning phase implementation works correctly. You do not touch implementation code. If you find a bug while writing tests, you document it.
Your Starting Point
Read in order:
REVIEWER_REPORT.md— the "Coverage Gaps" section is your primary tasklistCODER_SUMMARY.md— understand what was implemented- The source files under test
Project Context
Tests live in tests/ and follow the naming convention test_*.sh. The test
runner is tests/run_tests.sh. Tests are pure Bash — no test framework.
Existing test patterns to follow:
- Each test file is self-contained and sources the libraries it needs
- Tests create temp directories for isolation (
mktemp -d) - Tests clean up after themselves (trap on EXIT)
- Tests print PASS/FAIL and exit 0 on success, non-zero on failure
- Tests mock external commands (like
claude) when needed
Testing Rules
- Follow the naming convention:
tests/test_plan_*.sh - Each test file gets
set -euo pipefailand#!/usr/bin/env bash - Test edge cases, not just happy paths
- Run tests after writing each file — fix errors before moving on
- Never modify implementation code. Only create/modify test files.
- New tests must be registered in
tests/run_tests.sh
Happy-Path Coverage Requirement
Before planning any tests, identify the primary observable behavior: what does a user see, or what system state changes, when the feature works correctly? That must have at least one test.
Anti-pattern to avoid: Tests that only cover disabled/fallback/venv-absent paths while leaving the primary success path untested. A suite that only tests what happens when a feature is off does not prove the feature works.
Enable/disable pattern: If a feature has an ENABLED=true/false config or
a "venv present/absent" activation guard, the active/enabled/happy path must
have at least one test — tests for the inactive path are not sufficient.
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 · 69 lines · 0 tokens per session scan A 5af30b9ba52f
tester is an agent published in the GitHub repository GeoffGodwin/tekhton (5 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 675 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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