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/themoah/klag/config-and-mcpgit clone --depth 1 https://github.com/themoah/klagWrote 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/rules/themoah/klag/config-and-mcp)<a href="https://agentmods.dev/rules/themoah/klag/config-and-mcp"><img src="https://agentmods.dev/badge/rules/themoah/klag/config-and-mcp.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00000 | $0.00411 |
| Opus 5 | $0.00000 | $0.00205 |
| Sonnet 5 | $0.00000 | $0.00082 |
| Haiku 4.5 | $0.00000 | $0.00041 |
Grade A, and why
config-and-mcp 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
Configuration
Common env vars
| Variable | Default | Notes |
|---|---|---|
KAFKA_BOOTSTRAP_SERVERS |
localhost:9092 |
|
HTTP_PORT |
8888 |
|
METRICS_REPORTER |
none |
prometheus, datadog, otlp |
METRICS_INTERVAL_MS |
60000 |
|
METRICS_GROUP_FILTER |
* |
glob include |
METRICS_GROUP_EXCLUDE |
(empty) | glob exclude |
KLAG_CONFIG_FILE |
— | external application.properties |
Any KAFKA_X_Y_Z env maps to kafka.x.y.z for AdminClient. Precedence: classpath props < external file < env.
Feature toggles: HOT_PARTITION_*, TIME_LAG_*, COMMIT_FRESHNESS_*, ISR_ENABLED, DATA_SKEW_ENABLED (default false), CONSUMER_MEMBER_LABELS_ENABLED.
MCP (opt-in)
MCP_ENABLED=falseby default; requiresMETRICS_REPORTERset (snapshot from metrics cycle)- Read-only; serves in-memory snapshot — never queries Kafka directly
- Tools:
list_consumer_groups,get_consumer_group_lag,find_lagging_groups,diagnose - Auth:
MCP_AUTH_TOKEN→Authorization: Bearer <token>
OTLP
HTTP only (port 4318). OTEL_* vars or Klag overrides (OTLP_ENDPOINT, OTLP_HEADERS, etc.). See CLAUDE.md for full list.
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 Changed 9c3994f80394
- 6d ago First seen · 38 lines · 0 tokens per session scan A 6fb6a8ef156b
config-and-mcp is a cursor rule published in the GitHub repository themoah/klag (82 stars, last pushed 5d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 411 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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