Tool
Tavily
Free tier: Yes · 1,000 API credits per month.
From: $30/mo
Checked October 16, 2026
- Strength. The free plan includes 1,000 API credits per month for agent web search.
- Weakness. The next plan starts at $30 per month, and the API returns search results rather than clicking through a logged-in site.
Checked October 15, 2026
Search API for agents that need web results. Pricing page showed a $0 option; not installed here.
Tavily is a search API meant for agents. The pricing crawl included $0 and no-credit-card language, plus paid usage samples. Confirm the current free allotment on the pricing page. We did not call the API.
Best for
- Agent retrieval that starts with web search
- Apps that want search results, not a full browser
Not ideal for
- Crawling your own site into a corpus
- Interactive clicking and logged-in browsing
What we checked
Docs checked means we opened the official site and the pricing and docs URLs on this page. We did not run a successful local install, so this is not a smoke test.
No local install attempted (SaaS/desktop/extension or install not feasible without account).
Related tools
Browser Use
Open-source Python agent that controls a browser. We imported the package locally; no model call.
Smoke-testedOpen sourceNew releaseAgentChecked October 15, 2026
Free tier: Yes · Pay as you go after a free start. No monthly subscription.
From: Check pricing (opens in a new tab)
Checked October 16, 2026
- Strength. We imported browser-use 0.13.11, which is built for agents that open pages, click, and type.
- Weakness. You bring your own browser and model, and the docs bill cloud stealth browsers separately from the library.
LlamaIndex
Open-source framework for retrieval and agents. The cloud free plan includes 10,000 credits.
Smoke-testedOpen sourceAgentChecked October 15, 2026
Free tier: Yes · 10,000 credits.
From: $50/mo
Checked October 16, 2026
- Strength. We imported llama-index-core 0.14.25, and the cloud free plan includes 10,000 credits.
- Weakness. Cloud Starter is $50 per month after the 10,000 free credits.
Mem0
Memory layer for agents. We imported the Python package locally; no account and no model call.
Smoke-testedOpen sourceChecked October 15, 2026
Free tier: Yes · 10,000 add requests and 1,000 retrieval requests per month.
From: $19/mo
Checked October 16, 2026
- Strength. We imported mem0ai 2.2.1 locally, and the cloud plan includes 10,000 add requests and 1,000 retrieval requests per month.
- Weakness. The paid plan starts at $19 per month once you pass those monthly request limits.
Composio
Connects agents to third-party apps and tools. Docs and a $0 Hobby plan were checked; not installed here.
Docs checkedOpen sourceNew releaseChecked October 15, 2026
Free tier: Yes · 100,000 tool calls per month.
From: $29/mo
Checked October 16, 2026
- Strength. The Hobby plan includes 100,000 tool calls per month for connecting agents to third-party apps.
- Weakness. The next plan starts at $29 per month once you need more than the Hobby tool-call allotment.