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 batteryshark/rekit --skill bin-table-diffgit clone --depth 1 https://github.com/batteryshark/rekitWrote 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/batteryshark/rekit/bin-table-diff)<a href="https://agentmods.dev/skills/batteryshark/rekit/bin-table-diff"><img src="https://agentmods.dev/badge/skills/batteryshark/rekit/bin-table-diff/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/batteryshark/rekit/bin-table-diff"><img src="https://agentmods.dev/badge/skills/batteryshark/rekit/bin-table-diff.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 | $0.00095 | $0.01122 |
| Opus 5.5 | $0.00038 | $0.00449 |
| Sonnet 5.5 | $0.00019 | $0.00224 |
| Haiku 4.5 | $0.00010 | $0.00112 |
Grade A, and why
bin-table-diff 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 — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Binary Record Table Diff
Find the fixed-stride record tables compiled into a binary, extract them, and diff two builds record by record.
When to use
Software of a certain era compiles its content straight into the executable: song lists, level and difficulty tables, item stats, string catalogues. A function-level diff is blind to all of it — an added track or a rebalanced difficulty changes no code at all. If you are documenting what changed between two builds and only diffing code, you are missing whatever lives in these tables.
Pair it with diaphora-diff or bindiff: those tell you which functions changed, this
tells you which content did.
Usage
rekit run bin-table-diff find ./game-1.0 # locate tables
rekit run bin-table-diff extract ./game-1.0 ./out # JSON + CSV
rekit run bin-table-diff diff ./game-1.0 ./game-1.1 ./out # record-level diff
How detection works, and what it can't know
A table is found by a signal that is hard to counterfeit: a run of records at a fixed stride where the same position in every record holds a pointer into the binary's own string data. Nothing about the layout is assumed — stride, extent, and column types all come from the bytes, so it works across eras and games whose structs differ.
Virtual addresses are translated through the binary's PT_LOAD headers rather than an
assumed load base, so it is not tied to any one platform convention.
Offsets are anchor-relative. Where the pointer block sits inside the struct cannot be
recovered from pointer validity alone — every candidate alignment describes the same
bytes, so testing them proves nothing. The pointer block is therefore treated as column
0 and every column labelled relative to it. Extraction stays self-consistent and two
builds diff correctly, because both are detected identically. Columns are named by their
offset from that anchor (f00, f04, …), not by any inferred meaning. Pass
--offset/--stride/--records when you know the true struct start and want
struct-relative columns.
What ships with it
7 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 · 95 lines · 95 tokens per session scan A 7e6028e75b1b
bin-table-diff is a skill published in the GitHub repository batteryshark/rekit (20 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 95 tokens to every session and 1,122 once invoked, about $0.0004 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 2026-08-30.
Other skills, from other repositories
playtest-report
Structured playtest report template, or turn existing playtest notes into structured feedback.
godot-signals-groups
Build event-driven, decoupled Godot 4.7 gameplay with signals and node groups: declare and emit custom signals, connect with Callables (incl. bind/one-shot), and broadcast to many nodes via groups and callgroup. Use when wiring node communication in a Godot project, replacing tight references with signals…
motion
Reconstruct a skeleton from calibrated mesh projections and sequential VLM joint annotations, then fit joints and skin weights. Generate motion from joint-position trajectories, rhythm and contact constraints through IK; refine bone orientation against the action, then export, retarget and validate on the target mesh.
unity-addressables
Manage Addressables groups, entries, profiles and content builds (com.unity.addressables, reflection-based).
threejs-exposure-color-grading
Build a measured exposure and grading path in Three.js. Use for a 64x36 encoded luminance meter, asynchronous readback, weighted log-average exposure, asymmetric adaptation, single tone-map ownership, and a generated 32-cube post-tone-map LUT.
unity-manual-component
Manually add, configure, reorder, and copy components on GameObjects using Unity Editor UI. For one-off Inspector workflows that do not need REST automation.