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 agentmods add commands/sshadows/tree-sitter-al/grammar-helpgit clone --depth 1 https://github.com/SShadowS/tree-sitter-alWhat 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 | $0.00000 | $0.00302 |
| Opus 5 | $0.00000 | $0.00151 |
| Sonnet 5 | $0.00000 | $0.00060 |
| Haiku 4.5 | $0.00000 | $0.00030 |
Grade A, and why
grammar-help 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 2d 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.
What it actually says
Grammar Development Help
Available validation commands:
| Command | Description |
|---|---|
/validate |
Full validation (generate, test, health check, analysis) |
/quick-validate |
Fast validation (generate + test only) |
/save-baseline |
Save current state as baseline for regression detection |
/debug-test <pattern> |
Debug a specific failing test |
Manual Commands
# Generate parser
tree-sitter generate
# Run all tests
tree-sitter test
# Run specific test
tree-sitter test -i "test name pattern"
# Health check
python3 tools/check_grammar_health.py
# Find unused rules
python3 tools/find_unused_definitions.py
# Find duplicate rule keys in grammar.js's rules object
python3 tools/analyze_duplicates.py
# Full validation script
./validate-grammar.sh
Common Workflows
After making grammar changes:
/quick-validate- fast feedback- If passing:
/validate- full check - If all good:
/save-baseline- update baseline
Debugging a test failure:
/debug-test "test name"- get detailed analysis- Read the test file in
test/corpus/ - Check grammar.js for the relevant rules
Before committing:
/validate- ensure no regressions- Check for any warnings or issues
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.
- 2d ago First seen · 52 lines · 0 tokens per session scan A e2db5bfbbf25
grammar-help is a command published in the GitHub repository SShadowS/tree-sitter-al (24 stars, last pushed 21d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 302 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 2026-08-30.
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