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 synthesisengineering/synthesis-skills --skill synthesis-grounding-disciplinegit clone --depth 1 https://github.com/synthesisengineering/synthesis-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/synthesisengineering/synthesis-skills/synthesis-grounding-discipline)<a href="https://agentmods.dev/skills/synthesisengineering/synthesis-skills/synthesis-grounding-discipline"><img src="https://agentmods.dev/badge/skills/synthesisengineering/synthesis-skills/synthesis-grounding-discipline/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/synthesisengineering/synthesis-skills/synthesis-grounding-discipline"><img src="https://agentmods.dev/badge/skills/synthesisengineering/synthesis-skills/synthesis-grounding-discipline.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00164 | $0.05828 |
| Opus 5 | $0.00082 | $0.02914 |
| Sonnet 5 | $0.00033 | $0.01166 |
| Haiku 4.5 | $0.00016 | $0.00583 |
Grade A, and why
synthesis-grounding-discipline 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 11d 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 — 250 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Synthesis Grounding Discipline
A discipline for keeping AI-agent output anchored to external evidence. The failure family it catches is the mirror image of the one synthesis-anti-shortcuts catches: anti-shortcuts stops the agent from doing less than the work requires; grounding discipline stops the agent from claiming more than the evidence supports. Both are narrative-quality optimizations working against external truth — one dismisses real concerns to keep the story tidy, the other invents satisfying completions to keep the story moving.
The shapes in this catalog are universal to LLM agents, not quirks of one model or one workflow. A language model generates the most plausible continuation. Most of the time the plausible and the true coincide, which is exactly what makes the divergent cases dangerous: a fabricated reply reads like a real one, a stale cached fact reads like a fresh one, a null result from a broken probe reads like a verified absence. None of these announce themselves. The only defense is procedural — a set of checks applied at the moments where plausibility and truth come apart.
This skill is that set. Each catalog entry names the rule, the failure shape it prevents (with one anonymized incident vignette — every entry here was paid for in production), and the compliance procedure. A closing self-check compresses the catalog into the questions to ask before any output ships.
When to Apply
- Before recording any event, decision, message, or state change into a durable file (context files, session logs, transcripts, plans, reports)
- Before quoting or paraphrasing anything attributed to another person
- Before propagating a fact from a context file, plan, memory, or earlier conversation into any output
- Before reporting that something is absent, missing, unsent, undecided, or nonexistent
- Before writing into a directory or deleting anything
- Whenever a claim about external system state (reviews, deploys, CI, tickets, branches) is about to enter a draft
What ships with it
1 file 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.
- 11d ago First seen · 250 lines · 164 tokens per session scan A b0aa28e4e482
synthesis-grounding-discipline is a skill published in the GitHub repository synthesisengineering/synthesis-skills (18 stars, last pushed today), licensed Apache-2.0. It adds 164 tokens to every session and 5,828 once invoked, about $0.0008 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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