Scenario 01
Documentation extraction
Agent needs to read a specific docs page to answer a technical question.
What are the rate limits for the OpenAI Embeddings API?
Feed Antigravity Agents Clean Page Content, Not Raw HTML
Antigravity's Browser Subagent can control a full Chrome window — but that's overkill when you just need the content of a documentation page or a pricing table. Felo Web Fetch extracts any URL as clean markdown, giving the Agent Manager structured input it can read, summarize, and act on in a fraction of the time.
How it works
Agent tasks that trigger felo-web-fetch automatically
These are the prompts where Antigravity's Agent Manager routes to felo-web-fetch — when the task needs clean page content, not a browser session.
01 · User
Prompt sent
You type a task in Antigravity. No special syntax needed.
02 · Agent Manager
Task analysis
Gemini 3 plans the task and detects knowledge cutoff risk.
03 · SKILL.md router
Semantic match
SKILL.md description matches the task. The skill is loaded.
04 · Skill
Skill execution
The matched skill runs and fetches or processes the data.
05 · Output
Cited answer inline
Structured answer with source links returned to the agent.
Scenario 02
Changelog and release notes
Agent task requires current release notes that Gemini 3 may not have.
Summarize the breaking changes in the latest Stripe API changelog.
Scenario 03
Competitor page analysis
Agent needs to extract and analyze a competitor's pricing or feature page.
Extract the feature list from Linear's pricing page and compare it to our tier.
How it works
What felo-web-fetch adds to Antigravity
Six gaps the Browser Subagent can't close efficiently — felo-web-fetch fills them with structured, agent-ready content.
Clean text extraction
Strips nav, ads, and boilerplate. Returns only the content the agent needs to reason over.
Faster than Browser Subagent
No browser launch overhead. Structured content in under a second.
Structured output
Returns markdown or JSON — not raw HTML the agent has to parse.
Multi-page batching
Fetch and extract multiple URLs in a single agent step.
Handles paywalls gracefully
Returns available content with a clear signal when a page is gated.
SKILL.md auto-routing
Activated automatically when the agent task involves reading a URL.
Use Cases
Real tasks, real workflows
How developers use this skill inside Antigravity — from quick lookups to complex multi-step workflows.
01
Documentation extraction
Agent needs to read a specific docs page to answer a technical question.
❯What are the rate limits for the OpenAI Embeddings API?
02
Changelog and release notes
Agent task requires current release notes that Gemini 3 may not have.
❯Summarize the breaking changes in the latest Stripe API changelog.
03
Competitor page analysis
Agent needs to extract and analyze a competitor's pricing or feature page.
❯Extract the feature list from Linear's pricing page and compare it to our tier.
Installation
Three steps to clean page extraction inside Antigravity
Once installed, the Agent Manager triggers felo-web-fetch when a task involves reading a known URL — faster and lighter than the Browser Subagent for content-only extraction.
Method 1 · Terminal
Install via command line
Clone the Felo skills repo and copy the skill into your global Antigravity skills directory.
# Clone the Felo skills repository
git clone https://github.com/Felo-Inc/felo-skills.git
# Copy this skill to your global Antigravity skills folder
cp -r felo-skills/felo-web-fetch ~/.gemini/antigravity/skills/Installs to ~/.gemini/antigravity/skills/ — available across all your projects
Method 2 · Agent prompt
Let the agent install it for you
Paste this prompt directly into Antigravity. The agent clones the repo and copies the skill automatically.
Paste into Antigravity
Install https://github.com/Felo-Inc/felo-skills into my global Antigravity skills directory.
The agent handles cloning, copying, and directory setup — no terminal needed
1
Copy the skill into .agent/skills/
Clone the Felo skills repo and copy felo-web-fetch into .agent/skills/ for team-wide access via Git, or into ~/.gemini/antigravity/skills/ for personal use. The SKILL.md description tells the Agent Manager when to activate it.
2
Set your Felo API key
Add FELO_API_KEY to your environment. The skill handles readability parsing, JavaScript rendering, and markdown conversion — no additional configuration needed.
3
Agents read pages, not raw HTML
When an agent task involves a specific URL — a changelog, a pricing page, a competitor's feature list — felo-web-fetch extracts it as clean, structured content the agent can immediately summarize, compare, or feed into the next step.
No configuration needed. The SKILL.md file inside the skill folder tells Antigravity's Agent Manager when to activate it. Once the folder is in place, the agent routes to the skill automatically based on your prompt.
FAQ
Felo Web Fetch in Google Antigravity — FAQ
The Browser Subagent controls a full Chrome window — it can click, scroll, fill forms, and record video. felo-web-fetch is purpose-built for content extraction: give it a URL and it returns clean markdown or text. It's faster, lighter, and better suited when you know which page you need and just want its content.
Give Antigravity agents clean page content without the browser overhead
Install felo-web-fetch in .agent/skills/ and let the Agent Manager extract documentation, pricing pages, and reference content as structured markdown.
One API key. Drop the folder in .agent/skills/ and every agent task that needs to read a URL gets clean, structured output.
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