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 plurigrid/asi --skill duck-time-travelgit clone --depth 1 https://github.com/plurigrid/asiWrote 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/plurigrid/asi/duck-time-travel)<a href="https://agentmods.dev/skills/plurigrid/asi/duck-time-travel"><img src="https://agentmods.dev/badge/skills/plurigrid/asi/duck-time-travel/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/plurigrid/asi/duck-time-travel"><img src="https://agentmods.dev/badge/skills/plurigrid/asi/duck-time-travel.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 | $0.00000 | $0.02046 |
| Opus 5 | $0.00000 | $0.01023 |
| Sonnet 5 | $0.00000 | $0.00409 |
| Haiku 4.5 | $0.00000 | $0.00205 |
Grade A, and why
duck-time-travel 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 10d 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 — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: Duck Time Travel
Version: 1.0.0
Created: 2025-12-21
Trit: 0 (ERGODIC - Coordinator)
Color: #26D826 (Green)
Lineage: Traced from 745+ threads across November-December 2025
Canonical Triads
clj-kondo-3color (-1) ⊗ duck-time-travel (0) ⊗ rama-gay-clojure (+1) = 0 ✓
acsets (-1) ⊗ duck-time-travel (0) ⊗ gay-mcp (+1) = 0 ✓
Purpose
DuckDB/DuckLake time-travel queries with interaction color tracking. Every thread interaction gets a deterministic color via Gay.jl SplitMix64.
Thread Lineage Analysis
Most Expensive Threads (Message Count)
| Thread ID | Title | Messages | Color (seed-derived) |
|---|---|---|---|
| T-019b24be-1daa | Thread search results for gay and color | 419 | #a93ec0 |
| T-019b3165-0082 | Prevent Gay.jl regression with subagent branch tracking | 344 | #7a1036 |
| T-09d1dee8-9a4f | Docker compose dev profile configuration error | 303 | #babe58 |
| T-7289adbd-f227 | Terminal image protocols and color rendering | 298 | #6ffe80 |
| T-6b865d09-bfa7 | Count AMP threads using CLI | 246 | #555f06 |
| T-64c86783-b888 | Investigating vers cli output anomalies | 244 | #281993 |
| T-c02b8551-348d | Install Vercel CLI without Homebrew | 228 | #d115c6 |
| T-28328d85-4673 | Connect to Vers VM and check status | 212 | #8ce2a6 |
| T-b8114b83-2244 | Generate comprehensive color palette | 203 | #5df760 |
| T-019b381f-8fd5 | Babashka Gemini MCP server with DuckDB extraction | 199 | #c9f233 |
Root Thread Lineage (Most Connected)
T-019b2211-1dc0 (Root: Gay.jl parallel)
└─ T-019b2247-cf0d (Fork: Gay.jl parallel #1)
└─ T-019b2247-c147 (Fork: Gay.jl parallel #2)
└─ T-019b2247-a952 (Fork: Gay.jl parallel #3)
└─ T-019b2247-5802 (Fork: Gay.jl concepts)
└─ T-019b2247-4717 (Fork: Gay.jl patterns)
└─ T-019b2248-4511 (Interleave forked Gay.jl)
└─ T-019b2272-7c9b
└─ T-019b2289-ff42
└─ T-019b22ab-3fa4 (Color mining + incentives)
└─ T-019b2302-47d2
└─ T-019b2364-2e63 (CT-Zulip + GAY)
└─ T-019b2374-f1be (DuckDB + Hatchery)
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.
- 10d ago First seen · 204 lines · 0 tokens per session scan A 8357224f004c
duck-time-travel is a skill published in the GitHub repository plurigrid/asi (62 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,046 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 2026-09-01.
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