Marked Indirect Prompt Injection
Install
npx -y skills add fetcher-sh/fetcher-skills --skill twitter-api --agent claude-codeRun in a terminal. Claude loads the skill when a task calls for it. Check the repo's README before you run it.
Files
Twitter / X API
A drop-in Twitter/X data source for agents: search tweets, resolve profiles, pull timelines and followers, read Lists, and check trends — all as one plain HTTP GET, paid per call. No developer account, no app review, no OAuth handshake, and no waiting on X's own API tiers or rate-limit approvals. If your task mentions a Twitter/X search query, a handle, a tweet ID, or a list ID, this is the skill.
Base URL: https://twitter.fetcher.sh
Also published as x-api — same host, same
endpoints, indexed under the "X" name too since agents and users refer to the
platform both ways.
Quick reference
| Base URL | https://twitter.fetcher.sh |
| Auth | Authorization: Bearer bby_live_... or x402 (USDC) |
| Price | $0.002–$0.005/call |
| Endpoints | 15, all GET |
| MCP | https://twitter.fetcher.sh/mcp |
| Machine-readable | /openapi.json · /llms.txt · /skill.md |
Which endpoint do I need?
| I want to... | Call |
|---|---|
Search tweets by keyword or operator (from:, since:, min_faves:, ...) |
GET /api/search |
| Search accounts by name | GET /api/search/users |
| Look up a profile by @handle | GET /api/handle/{handle} |
| Get a user's followers or followings | GET /api/user/{id}/followers or /followings |
| Get a single tweet by ID | GET /api/tweet/{id} |
| See who retweeted a tweet | GET /api/tweet/{id}/retweeters |
| Read a Twitter List's tweets or members | GET /api/list/{id}/tweets or /members |
| Check trending topics for a country | GET /api/trends |
Full param details for every row: references/endpoints.md.
Authentication
Two ways to pay, same data — full mechanics in the fetcher
skill:
# 1. Prepaid credits (recommended — get a key at https://fetcher.sh/topup
# or via POST /api/credits/topup, see the fetcher skill)
export FETCHER_API_KEY="bby_live_xxxxxxxxxxxx"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/search?query=hello"
# 2. x402 pay-per-call — omit the header; a GET with no payment returns 402
# with machine-readable payment requirements (USDC on Base, Polygon,
# Arbitrum, Monad, or Solana). @x402/fetch signs and retries automatically.
Every response is { "status": number, "message": string, "data": ... }; the
HTTP status mirrors status.
Endpoints (15 — all GET, $0.005/call unless noted)
| Endpoint | Price | What it returns |
|---|---|---|
/api/search |
$0.005 | Tweets matching a query; supports X's advanced search operators |
/api/search/users |
$0.005 | Accounts matching a name/keyword query |
/api/handle/{handle} |
$0.005 | Profile by @handle |
/api/handle/{handle}/about |
$0.005 | Extended profile/about info by @handle |
/api/user/{id} |
$0.005 | Profile by numeric user ID |
/api/user/{id}/tweets |
$0.005 | A user's tweet timeline |
/api/user/{id}/replies |
$0.005 | A user's replies |
/api/user/{id}/followers |
$0.005 | A user's followers |
/api/user/{id}/followings |
$0.005 | Accounts a user follows |
/api/tweet/{id} |
$0.002 | A single tweet by ID |
/api/tweet/{id}/replies |
$0.005 | Replies to a tweet |
/api/tweet/{id}/retweeters |
$0.005 | Accounts that retweeted a tweet |
/api/list/{id}/members |
$0.005 | A Twitter List's member accounts |
/api/list/{id}/tweets |
$0.005 | A Twitter List's tweet feed |
/api/trends |
$0.005 | Trending topics for a country |
{id} / {handle} are path parameters — substitute the real value. Optional
query params (cursor, sort) paginate or reorder; only query (search) and
country (trends) are required elsewhere they appear.
Scenarios
The query on /api/search goes straight to X's own search, so its operators
work as-is: from:, to:, since:, until:, min_faves:, min_retweets:,
filter:, -filter:.
Everything from one account:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/search?query=from%3AOpenAI&sort=Latest"
Between two dates:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "query=x402 since:2026-01-01 until:2026-02-01" -G \
"https://twitter.fetcher.sh/api/search"
Popular posts only, replies excluded:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "query=ai agents min_faves:500 -filter:replies" -G \
--data-urlencode "sort=Top" \
"https://twitter.fetcher.sh/api/search"
Search accounts by name:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
--data-urlencode "query=climate scientist" -G \
"https://twitter.fetcher.sh/api/search/users"
Resolve a profile by handle, then pull its bio/about:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/handle/nasa"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/handle/nasa/about"
A user's tweets, replies, followers, or followings (by numeric ID from the handle lookup above):
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/user/11348282/tweets"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/user/11348282/followers"
A single tweet, its replies, and who retweeted it:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/tweet/1234567890123456789"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/tweet/1234567890123456789/replies"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/tweet/1234567890123456789/retweeters"
A Twitter List's members and tweets:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/list/1234567890/members"
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/list/1234567890/tweets"
Trending topics for a country:
curl -H "Authorization: Bearer $FETCHER_API_KEY" \
"https://twitter.fetcher.sh/api/trends?country=United%20States"
MCP
{
"mcpServers": {
"twitter": {
"url": "https://twitter.fetcher.sh/mcp",
"headers": { "Authorization": "Bearer bby_live_..." }
}
}
}
Free: search_endpoints, describe_endpoint, check_balance. Paid:
fetch_data (any endpoint above), topup_credits, plus the named shortcut
twitter_search. Drop the headers block to pay per call with x402 instead —
see the fetcher skill for the full flow.
Errors
400— missing/invalid parameter (message names it)401— unknown or rotated key402— payment required (x402 challenge) ortopup_required(credits exhausted)404— not a priced path- No rate limits; no refunds on upstream failures (settlement precedes delivery)
Reference
- Deep dives:
references/endpoints.md(every param) ·references/scenarios.md(onecurlper endpoint) ·references/faq.md·references/comparison.md(vs. the official X API and a browser scraper) - Task guides: search tweets · export followers
- Slash command:
/twitter-search - Full agent setup: https://twitter.fetcher.sh/skill.md
- OpenAPI 3.1 contract: https://twitter.fetcher.sh/openapi.json
- Condensed catalog: https://twitter.fetcher.sh/llms.txt
- Payment, credits, and MCP deep dive:
fetcherskill - Site: https://twitter.fetcher.sh
Facts
- Kind
- Skill
- Repo
- fetcher-sh/fetcher-skills
- Group
- Uncategorized
- Installs
- 7.4k
- Stars
- 2
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