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 yoanbernabeu/grepai-skills --skill grepai-languagesgit clone --depth 1 https://github.com/yoanbernabeu/grepai-skillsWrote 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/yoanbernabeu/grepai-skills/grepai-languages)<a href="https://agentmods.dev/skills/yoanbernabeu/grepai-skills/grepai-languages"><img src="https://agentmods.dev/badge/skills/yoanbernabeu/grepai-skills/grepai-languages/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/yoanbernabeu/grepai-skills/grepai-languages"><img src="https://agentmods.dev/badge/skills/yoanbernabeu/grepai-skills/grepai-languages.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk 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 | $0.00026 | $0.01937 |
| Opus 5 | $0.00013 | $0.00968 |
| Sonnet 5 | $0.00005 | $0.00387 |
| Haiku 4.5 | $0.00003 | $0.00194 |
Grade A, and why
grepai-languages 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 11d 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 — 356 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GrepAI Supported Languages
This skill covers the programming languages supported by GrepAI for indexing and call graph analysis.
When to Use This Skill
- Checking if your language is supported
- Configuring language-specific settings
- Understanding trace capabilities per language
- Troubleshooting language-related issues
Supported Languages Overview
GrepAI supports indexing for all text-based files, but has enhanced support for specific programming languages.
Full Support (Index + Trace)
| Language | Extensions | Index | Trace |
|---|---|---|---|
| Go | .go |
✅ | ✅ |
| JavaScript | .js, .jsx |
✅ | ✅ |
| TypeScript | .ts, .tsx |
✅ | ✅ |
| Python | .py |
✅ | ✅ |
| PHP | .php |
✅ | ✅ |
| C | .c, .h |
✅ | ✅ |
| C++ | .cpp, .hpp, .cc, .cxx, .hh |
✅ | ✅ |
| Rust | .rs |
✅ | ✅ |
| Zig | .zig |
✅ | ✅ |
| C# | .cs |
✅ | ✅ |
| Java | .java |
✅ | ✅ |
| Pascal/Delphi | .pas, .dpr |
✅ | ✅ |
Index Only (No Trace)
| Language | Extensions | Index | Trace |
|---|---|---|---|
| Ruby | .rb |
✅ | ❌ |
| Swift | .swift |
✅ | ❌ |
| Kotlin | .kt, .kts |
✅ | ❌ |
| Scala | .scala |
✅ | ❌ |
| Lua | .lua |
✅ | ❌ |
| Shell | .sh, .bash, .zsh |
✅ | ❌ |
| SQL | .sql |
✅ | ❌ |
| HTML | .html, .htm |
✅ | ❌ |
| CSS | .css, .scss, .less |
✅ | ❌ |
| Markdown | .md, .mdx |
✅ | ❌ |
| YAML | .yaml, .yml |
✅ | ❌ |
| JSON | .json |
✅ | ❌ |
| TOML | .toml |
✅ | ❌ |
| XML | .xml |
✅ | ❌ |
Language Configuration
Enabling/Disabling Languages for Trace
# .grepai/config.yaml
trace:
enabled_languages:
- .go
- .js
- .ts
- .jsx
- .tsx
- .py
- .php
- .rs
- .c
- .cpp
- .cs
- .java
Excluding Certain Extensions
trace:
enabled_languages:
- .go
# Exclude JavaScript intentionally
# - .js
exclude_patterns:
- "*_test.go"
- "*.spec.ts"
Language-Specific Tips
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.
- 11d ago First seen · 356 lines · 26 tokens per session scan A 53b66694e351
grepai-languages is a skill published in the GitHub repository yoanbernabeu/grepai-skills (20 stars, last pushed 7mo ago), licensed MIT. It adds 26 tokens to every session and 1,937 once invoked, about $0.0001 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.
Other skills, from other repositories
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cocosearch-add-grammar
Use when adding a grammar handler for domain-specific file formats that share a base language extension (e.g., GitHub Actions within YAML). Guides through YamlGrammarBase inheritance, content validation, separator spec, metadata extraction, tests, and registration.
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Use for Luau language semantics, tables, control flow, string patterns, scope, closures, and cross-language translation errors.
roblox-luau-patterns
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roblox-luau-types
Use for Luau annotations, generics, unions, narrowing, strictness, sealed tables, module type exports, or typed metatables.
swift6-concurrency
Handle Swift 6 concurrency patterns. Use when encountering Sendable warnings, data race errors, MainActor isolation issues, or framework interop problems (EventKit, Speech, AVFoundation, etc.). Trigger on "Swift 6 error", "Sendable", "data race", "MainActor", "concurrency warning", or "strict concurrency".