What is linkup-fetch?

A guide for using Linkup Fetch to read one known web address as Markdown, which is plain text formatted for documents. It covers JavaScript-rendered pages and checks for blocked, incomplete, or failed retrievals.

Use it to retrieve and inspect a specific public page, including pages that need JavaScript rendering, after you already know its URL.

It avoids running a new search when the exact page is already known. It also helps handle pages whose content is generated in the browser rather than included in the initial page response.

linkup-fetch — Skill for Claude Code and Codex by svngoku

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 svngoku/coding-agents-skills --skill linkup-fetch

Clone the repo

git clone --depth 1 https://github.com/svngoku/coding-agents-skills

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/svngoku/coding-agents-skills/linkup-fetch/github.svg)](https://agentmods.dev/skills/svngoku/coding-agents-skills/linkup-fetch)

Your own site

<a href="https://agentmods.dev/skills/svngoku/coding-agents-skills/linkup-fetch"><img src="https://agentmods.dev/badge/skills/svngoku/coding-agents-skills/linkup-fetch/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/svngoku/coding-agents-skills/linkup-fetch"><img src="https://agentmods.dev/badge/skills/svngoku/coding-agents-skills/linkup-fetch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 779 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.

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	$0.00058	$0.00779
Opus 5.5	$0.00023	$0.00312
Sonnet 5.5	$0.00012	$0.00156
Haiku 4.5	$0.00006	$0.00078

Measured 9d ago against content hash 4c02167d4fa8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

linkup-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 9d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (graders/check.py, tests/test_eval_grader.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/linkup-fetch/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Linkup Fetch

A local adaptation of Linkup's official fetch skill, with the original guidance bundled for offline reading. This is knowledge for an agent, not an installed API tool or a claim of Linkup endorsement. Check the dated compatibility guide before copying requests from the upstream snapshot.

Quick Reference

Need	Guide
Official skill guidance and its bundled references	Upstream skill
Current contracts, source pin, attribution, and validation limits	Sources and compatibility
Fetch schema and rendering reference	API reference

Core Workflow

Establish the goal, allowed sources, output shape, freshness, and an approved call/cost budget. Do not send private data to Linkup without authorization.
Confirm an actual Linkup connection. Inspect available MCP tool names and schemas, or the chosen SDK/API contract; skill files do not create tools.
Verify the known public URL and choose Fetch rather than rediscovering the page through Search.
Choose JavaScript rendering only when the page requires it and the selected client exposes that option.
Check the retrieved Markdown and source URL; handle errors or incomplete pages explicitly instead of repeatedly guessing URLs.
Preserve source URLs, distinguish missing evidence from negative findings, and report failures or incomplete results rather than inventing evidence.

Retrieval Boundary

Fetch reads a supplied page; it is not a general discovery query or a bulk structured-row extraction endpoint. Rendering a page does not grant permission to bypass authentication, paywalls, robots policies, or other access controls.

REST Request Example

POST https://api.linkup.so/v1/fetch, JSON body only. This is not an instruction to make a paid validation call.

{
  "url": "https://example.com/careers",
  "renderJs": true
}

The response includes markdown; add object schema for typed data from that page. instructions requires schema. Use REST/TypeScript renderJs versus Python render_js. For LinkedIn-specific URLs, use Search rather than Fetch.

Read the full file on GitHub · 77 lines

Files

What ships with it

10 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.

9d ago First seen · 77 lines · 58 tokens per session scan A 4c02167d4fa8

Subscribe to this mod's changes

linkup-fetch is a skill published in the GitHub repository svngoku/coding-agents-skills (12 stars, last pushed today), licensed MIT. It adds 58 tokens to every session and 779 once invoked, about $0.0002 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 2026-10-30.

Research skill-development skill-md skills

linkup-fetch next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
linkup-fetchsvngoku/coding-agents-skills	Skill	12	today	MIT	A	58	Claude Code, Codex
skill-authoringmateaix/mateclaw	Skill	1.2k	3d ago	Apache-2.0	A	18	Claude Code, Codex
iflytek-hyper-ttsiflytek/iFly-Skills	Skill	214	4d ago	Apache-2.0	A	92	Claude Code, Codex
iflytek-pdf-image-ocriflytek/iFly-Skills	Skill	214	4d ago	Apache-2.0	A	81	Claude Code, Codex
iflytek-text-proofreadiflytek/iFly-Skills	Skill	214	4d ago	Apache-2.0	A	88	Claude Code, Codex
iflytek-translateiflytek/iFly-Skills	Skill	214	4d ago	Apache-2.0	A	65	Claude Code, Codex
iflytek-video-translateiflytek/iFly-Skills	Skill	214	4d ago	Apache-2.0	A	91	Claude Code, Codex