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/env-configgit 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 | $0.00010 | $0.00352 |
| Opus 5 | $0.00005 | $0.00176 |
| Sonnet 5 | $0.00002 | $0.00070 |
| Haiku 4.5 | $0.00001 | $0.00035 |
Grade A, and why
env-config scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Environment Variable Configuration
Use std::getenv() for configuration (works with Docker Compose and .env).
const char* host = std::getenv("SMTP_HOST");
config.smtpHost = host ? host : "smtp.gmail.com";
// Boolean: compare to "true", "1", "yes" (case-insensitive)
// Integer: std::stoi with try/catch and default
- Do not create custom .env parser classes.
- Containers:
core,mongodb_test,redis,browserless. - Critical:
LOG_LEVEL,MONGODB_URI,REDIS_URL,BROWSERLESS_URL. - Never commit
.envwith credentials; use Docker secrets in production.
Configuration Priority
- Docker environment (highest)
.envfile (Docker Compose fallback)- Default values in code
Docker Compose Pattern
environment:
- SMTP_HOST=${SMTP_HOST:-smtp.gmail.com}
- SMTP_PORT=${SMTP_PORT:-587}
- SMTP_USE_TLS=${SMTP_USE_TLS:-true}
Boolean/Integer Parsing
// Boolean: compare to "true", "1", "yes" (case-insensitive)
// Integer: std::stoi with try/catch and default
const char* port = std::getenv("SMTP_PORT");
try {
config.smtpPort = port ? std::stoi(port) : 587;
} catch (const std::exception& e) {
LOG_WARNING("Invalid SMTP_PORT, using default: 587");
config.smtpPort = 587;
}
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 · 50 lines · 10 tokens per session scan A 8a8c62822bba
env-config is a cursor rule published in the GitHub repository hatefsystems/search-engine-core (5 stars, last pushed 28d ago), licensed Apache-2.0. It adds 10 tokens to every session and 352 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 2026-08-31.
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.