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/hatefsystems/search-engine-core/code-stylegit clone --depth 1 https://github.com/hatefsystems/search-engine-coreWhat 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 | $0.00357 |
| Opus 5 | $0.00000 | $0.00179 |
| Sonnet 5 | $0.00000 | $0.00071 |
| Haiku 4.5 | $0.00000 | $0.00036 |
Grade A, and why
code-style scanned grade A with 2 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 yesterday.
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.
Sends data to an external URLlowData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
- API: `curl --location 'http://localhost:3000/api/endpoint' --header 'Content-Type: application/json' --data-raw '{ ... }'` Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- API: `curl --location 'http://localhost:3000/api/endpoint' --header 'Content-Type: application/json' --data-raw '{ ... }'` What it actually says
Code Style and Practices
Error Handling
try {
mongocxx::instance& instance = MongoDBInstance::getInstance();
// ...
} catch (const mongocxx::exception& e) {
LOG_ERROR("MongoDB error: " + std::string(e.what()));
serverError(res, "Database error occurred");
}
Includes Order
// System headers first
#include <string>
#include <memory>
// Project headers
#include "../../include/Logger.h"
#include "../../include/mongodb.h"
// Third-party headers
#include <mongocxx/client.hpp>
#include <nlohmann/json.hpp>
Security
Validate input; use prepared statements; rate limit APIs; sanitize URLs; validate email/mobile formats.
Performance
Connection pooling (MongoDB); Redis caching; minimize DB round trips; indexes on hot fields.
Memory and Threads
Smart pointers; RAII; mutexes for shared state; lock_guard; minimize lock scope.
Testing
- MongoDB:
docker exec mongodb_test mongosh --username admin --password password123 --eval "db.adminCommand('ping')" - API:
curl --location 'http://localhost:3000/api/endpoint' --header 'Content-Type: application/json' --data-raw '{ ... }' - Verify data:
docker exec mongodb_test mongosh --username admin --password password123 --eval "use('search-engine'); db.collection.find().pretty()" - Logs:
docker logs core --tail 50,docker logs mongodb_test
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.
- yesterday First seen · 53 lines · 0 tokens per session scan A ef26d0d34c3a
code-style is a cursor rule published in the GitHub repository hatefsystems/search-engine-core (5 stars, last pushed 28d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 357 tokens. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other cursor rules, from other repositories
documentation
Documentation module guidelines for Infinispan docs.
infinispan
Infinispan project guidelines for coding and reviews.
cli
CLI module specific guidelines.
query
Query module specific guidelines.
agents
../../AGENTS.md.
qb-linq-headers
qb-linq implementation headers — CRTP, out-of-line locations, safe patterns.