keyword_volume · REST + MCP

Look up keyword search volume

See how many people search Google for each phrase per month, what advertisers pay per click, and how competitive it is. Give up to 100 phrases in one call. Use it to pick keywords for a website, blog post, or ad campaign.

$0.15 USD per successful paid call

This tool uses prepaid credit. Connect without a key and your agent will get a key and payment link when it needs this tool.

Charged once per call that returns a result, including an empty result list. Failed calls are free.

Connect your agent

Use it in your chat

Start with no key

In Claude.ai, Claude Desktop, Claude Code, ChatGPT or Codex, add a custom connector with this URL. No API key or Authorization header is needed.

https://unstuckapi.com/mcp

Try a few free calls a day with read_page, domain_check, domain_info, pdf_to_text, vulnerability_lookup, or paper_search. Each free result says how many are left and when they reset (midnight UTC).

A paid tool called without a key returns a new API key and a payment link instead of a result, and nothing is charged. In Claude, a Connect button opens the same payment page. Once credit is added, the agent can continue in the same chat with that key.

Already have a key?

If your connector cannot send headers, use this URL instead. Replace YOUR_API_KEY with your key.

https://unstuckapi.com/mcp?key=YOUR_API_KEY

Keep the completed URL private: it contains your API key.

Ask your agent to call keyword_volume with these arguments:

{
  "keywords": [
    "running shoes"
  ],
  "location": "United States"
}

Inputs

Send these fields as a JSON object to POST /v1/tools/keyword_volume.

Input fields for keyword_volume
Field	Type	Description & limits
`keywords`	array of string Required	Search phrases to look up (up to 100).Minimum items: 1 · Maximum items: 100
`location`	string Optional	Country, default "United States" (or the connection's default location). A city or state is reduced to its country.Minimum characters: 2 · Maximum characters: 100
`language`	string Optional	Language code, default "en".Minimum characters: 2 · Maximum characters: 10

Developer option: REST

Replace YOUR_API_KEY with your key. The following command makes a paid call if it succeeds.

export UNSTUCK_API_KEY="YOUR_API_KEY"

curl 'https://unstuckapi.com/v1/tools/keyword_volume' \
  -H "Authorization: Bearer $UNSTUCK_API_KEY" \
  -H 'Content-Type: application/json' \
  --data '{"keywords":["running shoes"],"location":"United States"}'

The response contains result, charged_usd, and your remaining balance_usd. Invalid input and failed tool calls are not charged.

Developer option: MCP with a header

For clients that support headers, connect using Streamable HTTP and these values:

https://unstuckapi.com/mcp

Authorization: Bearer YOUR_API_KEY

Connection guide · Full JSON schemas and prices · Agent instructions