fetch-twitter

A way to fetch the text, author details, and metadata of a Twitter/X post through its public syndication service, without login credentials.

In plain words
What is it for?
Use it when processing a Twitter/X URL or post ID to retrieve the post text, author, publication time, engagement details, media information, and quoted-post data.
Why use it?
It avoids manually opening posts or relying on incomplete previews when an agent needs to read a Twitter/X link.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/markerikson/opencode-config-example/fetch-twitter
Any agent
npx skills add markerikson/opencode-config-example --skill fetch-twitter
Clone the repo
git clone --depth 1 https://github.com/markerikson/opencode-config-example

Made for: Claude Code, Codex.

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 601 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00034 $0.00601
Opus 5 $0.00017 $0.00300
Sonnet 5 $0.00007 $0.00120
Haiku 4.5 $0.00003 $0.00060

Measured 2d ago against content hash 73dfdc95de86, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

fetch-twitter 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 2d 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.

config/skill/fetch-twitter/SKILL.md · 83 lines

What it actually says

Fetch Twitter/X Content

Fetch tweet content using Twitter's syndication API (the same endpoint used for tweet embeds).

Quick Usage

bun ~/.config/opencode/skill/fetch-twitter/fetch-twitter.js <tweet_url_or_id>

Examples

# From full URL
bun ~/.config/opencode/skill/fetch-twitter/fetch-twitter.js https://x.com/shanselman/status/2006301298933604666

# From tweet ID only
bun ~/.config/opencode/skill/fetch-twitter/fetch-twitter.js 2006301298933604666

Output Format

{
  "id": "2006301298933604666",
  "url": "https://x.com/shanselman/status/2006301298933604666",
  "author": {
    "name": "Scott Hanselman",
    "handle": "@shanselman",
    "verified": true
  },
  "text": "Full tweet text...",
  "created": "2025-12-31T09:47:59.000Z",
  "favorites": 389,
  "hasMedia": false,
  "mediaType": null,
  "quotedTweet": {
    "author": "@davidfowl",
    "text": "Quoted tweet text...",
    "url": "https://x.com/davidfowl/status/..."
  }
}

How It Works

Twitter's syndication API (cdn.syndication.twimg.com) is used for tweet embeds and doesn't require authentication. It requires a token calculated from the tweet ID:

function getToken(id) {
  return ((Number(id) / 1e15) * Math.PI)
    .toString(36)
    .replace(/(0+|\.)/g, '');
}

The endpoint is: https://cdn.syndication.twimg.com/tweet-result?id={tweetId}&token={token}

Limitations

  • May occasionally fail (retry if needed)
  • Rate limits are undocumented
  • Could break if Twitter changes the embed system
  • Does not fetch full threads, only the specific tweet (plus quoted tweet if present)

When to Use

When processing Twitter URLs:

  1. Detect x.com or twitter.com URLs
  2. Run: bun ~/.config/opencode/skill/fetch-twitter/fetch-twitter.js <url>
  3. Parse the JSON output
  4. Use text, author.name, author.handle for the markdown entry
  5. Note hasMedia and mediaType if relevant
  6. Include quotedTweet context if present
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.

  1. 2d ago First seen · 83 lines · 34 tokens per session scan A 73dfdc95de86

Subscribe to this mod's changes

fetch-twitter is a skill published in the GitHub repository markerikson/opencode-config-example (44 stars, last pushed 3mo ago), licensed MIT. It adds 34 tokens to every session and 601 once invoked, about $0.0002 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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