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 skills add keep-starknet-strange/starknet-agentic --skill starknet-network-factsgit clone --depth 1 https://github.com/keep-starknet-strange/starknet-agenticWrote 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/skills/keep-starknet-strange/starknet-agentic/starknet-network-facts)<a href="https://agentmods.dev/skills/keep-starknet-strange/starknet-agentic/starknet-network-facts"><img src="https://agentmods.dev/badge/skills/keep-starknet-strange/starknet-agentic/starknet-network-facts/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/keep-starknet-strange/starknet-agentic/starknet-network-facts"><img src="https://agentmods.dev/badge/skills/keep-starknet-strange/starknet-agentic/starknet-network-facts.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00024 | $0.00462 |
| Opus 5 | $0.00012 | $0.00231 |
| Sonnet 5 | $0.00005 | $0.00092 |
| Haiku 4.5 | $0.00002 | $0.00046 |
Grade A, and why
starknet-network-facts 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 11d 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
Starknet Network Facts
When to Use
- Reasoning about chain behavior assumptions in contract logic.
- Validating time, fee, and transaction-version dependencies.
When NOT to Use
- Contract implementation details unrelated to chain behavior.
Quick Start
- Identify assumptions in code about tx versions, fee tokens, and timing.
- Verify assumptions against current network behavior before release.
- Add tests for boundary behavior tied to block timing or tx metadata.
Core Focus
- transaction version expectations
- fee token and bounds assumptions
- block-time-sensitive logic
- sequencer and inclusion model implications
Workflow
- Main network-facts workflow: default workflow
References
- Module index: references index
starknet.js Example
import { RpcProvider } from "starknet";
const provider = new RpcProvider({ nodeUrl: process.env.STARKNET_RPC! });
const latest = await provider.getBlock("latest");
console.log({
blockNumber: latest.block_number,
l1GasPrice: latest.l1_gas_price,
l2GasPrice: latest.l2_gas_price,
});
Error Codes and Recovery
| Code | Meaning | Recovery |
|---|---|---|
SNF-001 |
RPC/network fact unavailable | Retry with a fallback RPC and compare outputs before acting. |
SNF-002 |
Conflicting tx-version assumption | Re-check references and update guards/tests for current tx version behavior. |
SNF-003 |
Fee-token assumption mismatch | Add explicit fee-token checks and fee-bound regression tests. |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 65 lines · 24 tokens per session scan A 80c7a895a547
starknet-network-facts is a skill published in the GitHub repository keep-starknet-strange/starknet-agentic (80 stars, last pushed 3d ago), licensed MIT. It adds 24 tokens to every session and 462 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 2026-08-30.
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