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/wesleysimplicio/simplicio-loop/simplicio-compressnpx skills add wesleysimplicio/simplicio-loop --skill simplicio-compressgit clone --depth 1 https://github.com/wesleysimplicio/simplicio-loopWhat 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 | $0.00107 | $0.01060 |
| Opus 5 | $0.00053 | $0.00530 |
| Sonnet 5 | $0.00021 | $0.00212 |
| Haiku 4.5 | $0.00011 | $0.00106 |
Grade A, and why
simplicio-compress 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.
How it starts
The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
simplicio-compress — output & memory token discipline
Two distinct surfaces, two passes:
- Output-side — compress the model's own PROSE (replies, reports, digests).
- Input-side — compress STANDING context once (memory/docs), amortized across every turn.
Both preserve every load-bearing token exactly. Credit: folds caveman (terse prose levels,
byte-preserve identifiers, memory-file compaction, honest baseline) into the simplicio
transform_guard safety spine. This is the standalone form of simplicio-tasks' density tiers
- one-time standing-context compaction.
Output-side: prose levels
Pick the leanest level that still reads correctly; default full. The level applies to PROSE
ONLY:
| Level | Use | Effect |
|---|---|---|
lite |
human-facing PR bodies, confirmations | drop filler ("I will now", "let me", hedging); keep full sentences |
full |
default | normal terse technical prose |
ultra |
worker→orchestrator reports, internal digests | telegraphic fragments; articles/copulas dropped |
There is NO grammar-mangling level. Terse prose is fine; mangling grammar degrades code review, confirmations, and instructions — we keep the discipline, not the gimmick.
The one inviolable rule (byte-preservation)
Code, commands, error strings, URLs, file paths, identifiers, version/numeric tokens stay
EXACT — never paraphrased, reflowed, or "cleaned up". Compression rewrites the connective
prose AROUND them, never them. A safety confirmation, irreversible-op warning, or order-dependent
sequence is NEVER compressed (auto-clarity — see simplicio-orient).
transform_guard (zero-LLM, fail-closed) — runs on every compaction
Before accepting ANY compressed artifact, run a deterministic check with NO model tokens: extract the set of code fences, inline-code tokens (BY OCCURRENCE count, so a lost duplicate is caught), URLs, file paths, and version/numeric tokens from BEFORE and AFTER.
- Any LOST code/URL/path/version token → HARD failure: discard the compaction, keep the original byte-identical.
- Heading/bullet-count drift → WARNING only.
- On hard failure, issue ONE targeted fix touching only the flagged tokens (max 2 retries); still failing → abort to original. Never ship a silently-corrupted artifact.
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.
- 2d ago First seen · 87 lines · 107 tokens per session scan A fd77490a3a79
simplicio-compress is a skill published in the GitHub repository wesleysimplicio/simplicio-loop (2 stars, last pushed 2d ago), licensed MIT. It adds 107 tokens to every session and 1,060 once invoked, about $0.0005 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 2026-08-31.
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