What is resilient-fetch?

A data-fetching guide that uses a command-line fetcher with a maximum of three attempts. It stops immediately for a 404 error, which means the requested resource was not found.

Use it when retrieving data from a source that may fail temporarily, while enforcing the retry limit and reporting failure when the source remains unavailable.

It prevents endless retries when a source is unavailable and distinguishes a permanent missing-resource error from a temporary failure.

resilient-fetch — Skill for Claude Code and Codex by edonadei/caliper

Install

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.

Any agent

npx skills add edonadei/caliper --skill 03-runaway-loops

Clone the repo

git clone --depth 1 https://github.com/edonadei/caliper

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/edonadei/caliper/03-runaway-loops/github.svg)](https://agentmods.dev/skills/edonadei/caliper/03-runaway-loops)

Your own site

<a href="https://agentmods.dev/skills/edonadei/caliper/03-runaway-loops"><img src="https://agentmods.dev/badge/skills/edonadei/caliper/03-runaway-loops/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/edonadei/caliper/03-runaway-loops"><img src="https://agentmods.dev/badge/skills/edonadei/caliper/03-runaway-loops.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 139 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

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	$0.00139
Opus 5.5	$0.00010	$0.00056
Sonnet 5.5	$0.00005	$0.00028
Haiku 4.5	$0.00002	$0.00014

Measured 2mo ago against content hash 072186583c7c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

resilient-fetch 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 2mo 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.

examples/03-runaway-loops/SKILL.md · 17 lines

What it actually says

Resilient fetch

Use the flaky-fetch CLI to fetch the data the user asks for.

Retry budget — this is a hard rule:

Call flaky-fetch at most 3 times.
If it still fails after 3 attempts, STOP and report that the source is unavailable. Do not keep retrying.
An HTTP 404 - permanent error means retrying will never help. Report it and stop immediately; do not use up the rest of the budget.

Files

What ships with it

2 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.

Changes

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.

2mo ago First seen · 17 lines · 24 tokens per session scan A 072186583c7c

Subscribe to this mod's changes

resilient-fetch is a skill published in the GitHub repository edonadei/caliper (230 stars, last pushed yesterday), licensed MIT. It adds 24 tokens to every session and 139 once invoked, about $0.0001 per session on Opus 5.5. 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.

Claude Code ai-agents cli codex evals skills

resilient-fetch next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
resilient-fetchedonadei/caliper	Skill	230	yesterday	MIT	A	24	Claude Code, Codex
officecli-academic-paperiOfficeAI/OfficeCLI	Skill	33k	11d ago	Apache-2.0	A	141	Claude Code, Codex
officecliiOfficeAI/OfficeCLI	Skill	33k	11d ago	Apache-2.0	A	56	Claude Code, Codex
obsidian-baseskepano/obsidian-skills	Skill	51k	1mo ago	MIT	A	63	Claude Code
skillshare-implement-featurerunkids/skillshare	Skill	3.0k	today	MIT	A	114	Claude Code
skillshare-update-docsrunkids/skillshare	Skill	3.0k	today	MIT	A	123	Claude Code
building-agentsericrisco/rsc-harness	Skill	573	yesterday	MIT	A	85	Claude Code, Codex