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.
git clone --depth 1 https://github.com/dergigi/borisWrote 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/dergigi/boris/fetching-data-with-controllers)<a href="https://agentmods.dev/rules/dergigi/boris/fetching-data-with-controllers"><img src="https://agentmods.dev/badge/rules/dergigi/boris/fetching-data-with-controllers/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/rules/dergigi/boris/fetching-data-with-controllers"><img src="https://agentmods.dev/badge/rules/dergigi/boris/fetching-data-with-controllers.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00006 | $0.00201 |
| Opus 5 | $0.00003 | $0.00101 |
| Sonnet 5 | $0.00001 | $0.00040 |
| Haiku 4.5 | $0.00001 | $0.00020 |
Grade A, and why
fetching-data-with-controllers 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 3d 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
Fetching Data with Controllers
We fetch data from relays using controllers:
- Start controllers immediatly; don't await.
- Stream via onEvent; dedupe replaceables; emit immediately.
- Parallel local/remote queries; complete on EOSE.
- Finalize and persist since after completion.
- Guard with generations to cancel stale runs.
- UI flips off loading on first streamed result.
We always include and prefer local relays for reads; optionally rebroadcast fetched content to local relays (depending on setting); and tolerate local‑only mode for writes (queueing for later).
Since we are streaming results, we should NEVER use timeouts for fetching data. We should always rely on EOSE.
In short: Local-first hydration, background network fetch, reactive updates, and replaceable lookups provide instant UI with eventual consistency. Use local relays as local data store for everything we fetch from remote relays.
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.
- 3d ago First seen · 22 lines · 6 tokens per session scan A 522ca9e490ee
fetching-data-with-controllers is a cursor rule published in the GitHub repository dergigi/boris (17 stars, last pushed yesterday), licensed MIT. It adds 6 tokens to every session and 201 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 2026-09-09.
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