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 skills add Firstp1ck/pi-coding-agent-forge --skill validated-structured-outputgit clone --depth 1 https://github.com/Firstp1ck/pi-coding-agent-forgeWrote 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/firstp1ck/pi-coding-agent-forge/validated-structured-output)<a href="https://agentmods.dev/skills/firstp1ck/pi-coding-agent-forge/validated-structured-output"><img src="https://agentmods.dev/badge/skills/firstp1ck/pi-coding-agent-forge/validated-structured-output/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/skills/firstp1ck/pi-coding-agent-forge/validated-structured-output"><img src="https://agentmods.dev/badge/skills/firstp1ck/pi-coding-agent-forge/validated-structured-output.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 | $0.00045 | $0.00622 |
| Opus 5.5 | $0.00018 | $0.00249 |
| Sonnet 5.5 | $0.00009 | $0.00124 |
| Haiku 4.5 | $0.00005 | $0.00062 |
Grade A, and why
validated-structured-output 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 1mo 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 — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Validated structured output
Use this skill when the task needs a mechanically checkable response shape. Validation proves only the declared shape and bounded checks; it does not prove facts, extraction correctness, or behavior.
When to use
Should trigger
- “Return exactly one approved status from this list.”
- “Produce JSON with these fields and no extra properties.”
- “Give me a CSV with these columns and no more than 20 rows.”
Should not trigger
- “Research whether this claim is true.”
- “Fix this repository bug.”
- “Write a normal explanation with no machine-checkable shape.”
Inputs
Identify the desired format, fields or columns, required values, size limits, whether human semantic review remains required, and the candidate output. Keep the contract declarative JSON. Do not include commands, remote schema references, regexes, templates, or executable expressions. A literal URL value does not authorize network access.
Portable workflow
- State the smallest output shape that can be checked mechanically.
- Express it as a bounded declarative contract: JSON schema subset, CSV columns, enum values, string limits, or checklist items.
- Inspect the full contract or its hash-bound artifact before activation.
- Validate the candidate for syntax and declared structure.
- Mark factual, extraction, interpretation, and behavioral claims for independent evidence or human review.
- Stop after the original candidate plus at most two repairs; escalate rather than looping.
Safety boundary
Do not treat a schema pass as factual correctness. Do not execute contract content, fetch referenced resources, compile generated code, follow URLs, or silently repair unlimited candidates. Reject malformed or oversized contracts and candidates.
Verification
Report the contract identifier or hash, candidate attempt count, syntax result, structural result, semantic-review requirement, and any unresolved human review. A pass may mean only that the output matches the declared form.
What ships with it
2 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.
- 1mo ago First seen · 52 lines · 45 tokens per session scan A 085dd49b470d
validated-structured-output is a skill published in the GitHub repository Firstp1ck/pi-coding-agent-forge (91 stars, last pushed today), licensed MIT. It adds 45 tokens to every session and 622 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 2026-09-14.
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