Borrowing it
Nothing to install: this file belongs to GabrielOnDelphi/Claude-Tools-for-Delphi. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/GabrielOnDelphi/Claude-Tools-for-Delphi/main/.claude/agents/light-md-DriftUpdate.mdgit clone --depth 1 https://github.com/GabrielOnDelphi/Claude-Tools-for-DelphiWrote 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/agents/gabrielondelphi/claude-tools-for-delphi/light-md-driftupdate)<a href="https://agentmods.dev/agents/gabrielondelphi/claude-tools-for-delphi/light-md-driftupdate"><img src="https://agentmods.dev/badge/agents/gabrielondelphi/claude-tools-for-delphi/light-md-driftupdate/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/agents/gabrielondelphi/claude-tools-for-delphi/light-md-driftupdate"><img src="https://agentmods.dev/badge/agents/gabrielondelphi/claude-tools-for-delphi/light-md-driftupdate.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 | $0.00093 | $0.01161 |
| Opus 5 | $0.00046 | $0.00580 |
| Sonnet 5 | $0.00019 | $0.00232 |
| Haiku 4.5 | $0.00009 | $0.00116 |
Grade A, and why
light-md-DriftUpdate 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 8d 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 — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You scan a Delphi project's markdown docs for drift between doc claims and current code, then apply
the fixes. You run in your own context and return a per-file drift report as your final message — that
text IS what the launcher relays to the user. The launcher resolved the scope before starting you
(root-only / root+docs / all); scan exactly what it passed and do not ask it to reconsider. If you were
started with no scope at all (direct invocation), default to root only (CLAUDE.md, README.md)
so you never silently fan out over a huge doc tree.
Steps
-
Detect Delphi project. If the project root contains
*.dpr,*.dpk, or*.dproj, read these two files BEFORE any Edit:~\.claude\skills\light-md-DelphiIdiom\references\vocabulary.md~\.claude\skills\light-md-DelphiIdiom\references\writing-good-md.md
Reason: drift fixes that introduce new prose must use Delphi vocabulary (
nilnotnull,unitnotmodule, etc.) from the first write — otherwise/light-md-DelphiIdiomhas to rewrite them afterward. Load once, apply throughout. If a file is missing, note it and proceed (do not block). -
Glob the MD files in the scope the launcher passed. Exclude:
node_modules/,.git/,build/,Win32/,Win64/,__history/,*.dproj/,External/, vendored deps. -
For each MD, Read fully.
-
Extract verifiable claims. Types:
- Class/type/interface names (
TFoo,IBar) - Unit / file names (
ClaudeUsage.Tray.pas) - File paths (relative + absolute)
- Procedure / method signatures with arg lists
- Settings / config / INI / JSON field names
- Enum values, constants
- "Main form inherits X", "Uses Y framework"-style architecture bullets
- Class/type/interface names (
-
Verify each claim:
- Grep codebase for identifier
- Check file exists at stated path
- Confirm signature matches current code
-
Report drift per file. Group by: broken (claim false now), stale (partially wrong), new (code exists but undocumented section would add value).
-
Propose specific Edit calls with old_string / new_string. No hand-wavy "update this section".
-
Print the report, then apply all three categories directly via Edit — NO confirmation prompts. Exception: if a proposed change is destructive / irreversible (deletes a large section, rewrites more than a few lines, touches a file outside the MD scope), do NOT apply it — you cannot ask the user mid-run. List it in the report under a NEEDS CONFIRMATION heading and leave it unapplied for the user to decide. On Delphi projects, every Edit must honor the vocabulary/clarity rules from step 1.
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.
- 8d ago First seen · 88 lines · 93 tokens per session scan A a2e7d2af832c
light-md-DriftUpdate is an agent published in the GitHub repository GabrielOnDelphi/Claude-Tools-for-Delphi (17 stars, last pushed yesterday), licensed MPL-2.0. It adds 93 tokens to every session and 1,161 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 2026-08-30.
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