Monid (site) is a single wallet that lets an AI agent discover, compare, and pay for paid tools — social scrapers, search APIs, ecommerce data, lead gen, and more — across 1,700+ tools without a subscription. It runs on a freemium model: a $1 free credit to start, then pay-per-call pricing at $0.0013 per call, with one balance covering all tools.
Comparison
| Product | Free tier | Starts at | Best for |
|---|---|---|---|
| need | Yes | Free (no pricing stated) | Zero-config tool discovery, not billing |
| Treg | Yes | $0/mo | Large tool catalog at 0% markup |
| IteraTools | No | $0.001/mo | Simple pay-per-use tools, no signup |
| AgenticTrade | Yes | Not stated | Agents buying/selling APIs |
| AgentKey | Yes | Not stated | Live data via subscription plans |
| Clawby | Yes | Not stated | Market/trading data via one API key |
| OneKey Agent Gateway | Yes | $9.9/mo | Multi-agent deployment gateway |
need
need (site) is a free, open-source service that lets AI agents automatically discover, install, and rank tools, set up via npm with no API keys or config. It suits developers who want a lightweight discovery layer rather than a billing system. No pricing is stated because the product is free. Limitation: it handles discovery, not payment, so it doesn't replace Monid's pay-per-call marketplace function.
Treg
Treg (site) gives access to 2,600 APIs with pay-per-call pricing and no markup on provider rates, plus a $1 free credit and the option to bring your own API keys for unmetered calls. It suits agents that want the widest tool catalog at raw provider cost. It starts at $0/mo with no subscriptions or minimums. Limitation: it launched in August 2026, so it has less track record than more established options.
IteraTools
IteraTools (site) offers 40+ pay-per-use API tools — text-to-speech, web search, video generation — with no signup or subscription required; users prepay via Stripe. It suits agents that want to call a small number of tools quickly without account setup. Pricing starts at $0.001 per request, up to $0.05 per video. Limitation: its catalog of 40+ tools is much smaller than Monid's.
AgenticTrade
AgenticTrade (site) is an open-source marketplace where agents both buy and sell APIs; it's free to sign up, agents pay per use with no subscription fees, and providers pay 0% commission in month one, rising to 10% by month three. It suits developers who want to sell tools to agents, not just consume them. No explicit USD service pricing is stated. Limitation: it had zero launch-day votes, so adoption is unproven.
AgentKey
AgentKey (site) is a live data marketplace with a free tier requiring no card, plus paid Lite, Pro, and Max plans billed monthly or annually. It suits teams that prefer a subscription structure over per-call billing for live data feeds. Specific plan prices are not stated. Limitation: without published pricing, it's hard to compare true cost against Monid's per-call model upfront.
Clawby
Clawby (site) gives one API key for agents to query and trade markets, with a free plan including 100 paid-interface calls plus Standard and Pro subscription tiers. It suits agents built specifically around market data and trading. Exact subscription prices are not disclosed. Limitation: its focus is narrower (markets only) than Monid's general tool catalog.
OneKey Agent Gateway
OneKey Agent Gateway (site) provides gateway access for APIs, MCP, Skills, and CLI tools, with a free plan for one agent deployment and a Pro plan at $9.9/month (5 agents) or $99/year (8 agents). It suits teams deploying and managing multiple agents under one gateway. Limitation: at $9.9/mo minimum for the Pro tier, it costs more upfront than the pay-per-call options on this list if usage is light.
How to choose
If you just need to discover tools without paying for them, start with need. If you want the largest catalog at raw cost, Treg's 0% markup is close to Monid's model. If you only need a handful of simple tools occasionally, IteraTools' per-request pricing from $0.001 can undercut Monid. If you want a subscription structure or a narrower focus (markets, live data), look at Clawby, AgentKey, or OneKey instead.
FAQ
Is Monid free to use? It has a freemium model with a $1 free credit, then pay-per-call pricing at $0.0013 per call.
Which alternative is cheapest? need and Treg both start at $0, and IteraTools starts as low as $0.001 per request.
Which alternative has the most tools? Treg lists 2,600 APIs, more than the tool counts stated for the other alternatives here.