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 rules/hamzaamjad/cursor-rules/302-cursor-agent-coregit clone --depth 1 https://github.com/hamzaamjad/cursor-rulesWhat 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 | $0.00008 | $0.00294 |
| Opus 5 | $0.00004 | $0.00147 |
| Sonnet 5 | $0.00002 | $0.00059 |
| Haiku 4.5 | $0.00001 | $0.00029 |
Grade A, and why
302-cursor-agent-core 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
Cursor Agent Core
Purpose: Reliable autonomous codebase changes.
Essential Workflow
# 1. Read → 2. Plan → 3. Apply → 4. Verify
content = read_file(path)
changes = analyze_modifications(content)
apply_with_verification(path, changes)
run_terminal_cmd("pytest")
Tool Priority
| Operation | Primary | Fallback |
|---|---|---|
| Surgical edit | edit_block |
edit_file |
| Full rewrite | write_file |
Manual chunks |
| Multi-file | Batch operations | Sequential |
Safety Rules
- Always read before edit
- Verify after every change
- Rollback on validation failure
- Test before claiming success
Quick Patterns
- Rename: Find all → Edit each → Verify
- Refactor: AST analysis → Staged edits
- Migrate: Backup → Transform → Validate
Details: @lazy_load
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 · 47 lines · 8 tokens per session scan A 1c9fc1eda833
302-cursor-agent-core is a cursor rule published in the GitHub repository hamzaamjad/cursor-rules (2 stars, last pushed 1y ago), licensed MIT. It adds 8 tokens to every session and 294 once invoked, about $0.0000 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 2026-08-31.
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