Borrowing it
Nothing to install: this file belongs to tekugo/zeichenwerk. 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/tekugo/zeichenwerk/main/AGENTS.mdgit clone --depth 1 https://github.com/tekugo/zeichenwerkWrote 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/instructions/tekugo/zeichenwerk/agents-md)<a href="https://agentmods.dev/instructions/tekugo/zeichenwerk/agents-md"><img src="https://agentmods.dev/badge/instructions/tekugo/zeichenwerk/agents-md/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/instructions/tekugo/zeichenwerk/agents-md"><img src="https://agentmods.dev/badge/instructions/tekugo/zeichenwerk/agents-md.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 | $0.07156 | $0.07156 |
| Opus 5.5 | $0.02862 | $0.02862 |
| Sonnet 5.5 | $0.01431 | $0.01431 |
| Haiku 4.5 | $0.00716 | $0.00716 |
Grade A, and why
zeichenwerk AGENTS.md 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 2mo 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 — 387 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Guidelines
Normative Keywords
- MUST: mandatory requirement
- SHOULD: recommended but optional with justification
- MAY: optional
Core Principles
- MUST follow idiomatic Go patterns
- MUST minimize dependencies
- MUST use explicit error handling
- SHOULD keep functions <= 50 lines
- SHOULD prefer composition over inheritance patterns
File Formats
- MUST use Markdown for documentation files
Libraries
- MUST use log/slog for logging
Reading order for new contributors
- Tutorial:
github.com/tekugo/zeichenwerk-tutorial— chapters from a 20-line teaser through a real SQLite query tool. Lives in a separate repo so the sqlite3 dependency does not leak into zeichenwerk's module graph; every snippet has a runnable program underexamples/. - Reference:
doc/reference/overview.md— one page per widget. - Design principles:
doc/principles.md— the small set of invariants the framework relies on. - Events / flags:
doc/events.md,doc/flags.md. - Designer:
doc/designer/README.md— the inspector framework, per-widget*-form.gofiles, codegen, and thecmd/designer-pocdriver.
Extracted apps
Most cmd/ tools were extracted to standalone repos under tekugo/. Each consumes zeichenwerk as a normal dependency, so app-only deps don't leak into the library's go.mod:
- tekugo/datenwerk — sqlite3
- tekugo/triebwerk — fsnotify, doublestar (binary
tw) - tekugo/messwerk — otlp/grpc (binary
mw) - tekugo/tblr — atotto/clipboard
- tekugo/malwerk
- tekugo/hal-explorer
- tekugo/figlet
What stays in cmd/: showcase apps (demo, demo2, compose, showcase, editor), dev tools (zw, analyzer, coverage), and proof-of-concept drivers (designer-poc, inspector-poc).
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.
- 2mo ago First seen · 387 lines · 7,156 tokens per session scan A 56a85e5ea60c
zeichenwerk AGENTS.md is an instructions file published in the GitHub repository tekugo/zeichenwerk (86 stars, last pushed 1mo ago), licensed MIT. It adds 7,156 tokens to every session, about $0.0286 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.
zeichenwerk AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| zeichenwerk AGENTS.mdtekugo/zeichenwerk | Instructions file | 86 | 1mo ago | MIT | A | 7,156 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |