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.
npx agentmods add skills/joshuadavidthomas/opencode-agent-skills/test-skillnpx skills add joshuadavidthomas/opencode-agent-skills --skill test-skillgit clone --depth 1 https://github.com/joshuadavidthomas/opencode-agent-skillsWrote 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/joshuadavidthomas/opencode-agent-skills/test-skill)<a href="https://agentmods.dev/skills/joshuadavidthomas/opencode-agent-skills/test-skill"><img src="https://agentmods.dev/badge/skills/joshuadavidthomas/opencode-agent-skills/test-skill.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 | $0.00029 | $0.00385 |
| Opus 5 | $0.00015 | $0.00192 |
| Sonnet 5 | $0.00006 | $0.00077 |
| Haiku 4.5 | $0.00003 | $0.00038 |
Grade A, and why
test-skill 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 6d 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.
What it actually says
Test Skill
This skill exists to verify the OpenCode Skills Plugin API works correctly.
Testing Checklist
Use this skill to verify:
- use_skill - You're reading this, so it works!
- read_skill_file - Load
example-config.jsonorhelper-docs.md - run_skill_script - Execute
greetorecho-argsscripts - find_skills - Should list this skill and others
Available Files
SKILL.md- This file (the main skill content)helper-docs.md- Additional documentation to test read_skill_fileexample-config.json- Sample config file to test non-markdown loadingscripts/greet- Simple script that prints a greetingscripts/echo-args- Script that echoes back its arguments
Example Workflow
1. find_skills # List available skills
2. use_skill test-skill # Load this skill (you're here!)
3. read_skill_file test-skill helper-docs.md # Load supporting docs
4. run_skill_script test-skill greet # Run a script
5. run_skill_script test-skill echo-args --foo bar # Run with args
Expected Outputs
When everything works:
use_skillreturns "Skill 'test-skill' loaded." with scripts listedread_skill_filereturns "File 'X' from skill 'test-skill' loaded."run_skill_script greetreturns "Hello from test-skill!"run_skill_script echo-argsreturns the arguments passed to it
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 6d ago First seen · 44 lines · 29 tokens per session scan A afe8f11368de
test-skill is a skill published in the GitHub repository joshuadavidthomas/opencode-agent-skills (272 stars, last pushed 10d ago), licensed MIT. It adds 29 tokens to every session and 385 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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