Best Free Tools for Building AI Agent Integrations in 2026
Free tiers stop in different places. This article puts Composio, Arcade, Nango, Zapier MCP, Pipedream, and Swytchcode on one table and explains what each number actually counts.
Key takeaways
- -In this article we explore the best free tools for building AI agent integrations, and the exact place each free tier stops.
- -To understand how free tiers differ: Composio counts tool calls, Zapier counts tasks, Nango counts connections, and Swytchcode counts live commands. A bigger number is not the same product.
- -Under 100,000 tool calls a month, Composio's free tier is the largest catalog allowance in this category, as published in October 2026. Managed OAuth apps can be a lower allowance than your own OAuth app.
- -Pipedream's free plan is development only. It does not include a production environment.
- -Swytchcode Free is 100 live commands a month, 10 connected end users, and 7 days of logs. It is for evaluating the pipeline. Approval workflows are on Business and Enterprise.
You want to connect an assistant to an API without a credit card, and you want to know the day the free plan stops you. The numbers on pricing pages look comparable. They are not.
This article reads each free tier the way a bill is read. One vendor counts tool calls. Another counts tasks. Another counts connections. Another counts only the requests that left your machine for a provider. Prices and limits below were read in October 2026. Open the vendor's page before you promise a launch.
Where free tiers stop
Three limits matter more than the headline number.
How many customers can connect. This is multi-tenancy. A plan that is fine for your company's one Stripe key is the wrong plan when every customer connects their own Gmail. Nango's free plan says this with the number 10 connections. Swytchcode's free plan says this with 10 connected end users. Composio's free plan, in October 2026, published unlimited connected accounts.
How long you can see what ran. This is the audit log. Swytchcode Free keeps logs for 7 days. A question about last month cannot be answered from that log. Pro keeps 30 days. Business keeps 90 days.
Whether free may serve real customers. Pipedream's free plan is development only. There is no production environment. "Free" on that page is not permission to launch.
A fourth limit shows up the first time the assistant should wait for a person. Holding a risky call for Slack or Telegram approval is on Swytchcode Business and Enterprise. If nobody approves within 48 hours, the call never runs. Free and Pro can allow or deny an action. They cannot pause for a person. A free plan that can call a refund method is not the same as a free plan that can ask first.
The free plans, side by side
| Tool | Free allowance in October 2026 | What the number counts | Where it stops |
|---|---|---|---|
| Composio | 100,000 tool calls a month, 50,000 trigger events, unlimited connected accounts, 3 seats | A tool call on their hosted catalog | Write idempotency was not described in the public docs. Managed apps can be a lower allowance than your own OAuth app. |
| Swytchcode | 100 live commands a month, 10 connected end users, 7-day logs, allow or deny, no card | A request that actually went to a provider after checks | Evaluating the pipeline, not production traffic. No team seats. No approval workflow. |
| Arcade | 2,000 tool calls and 2,000 auth events | Tool use and sign-in are both counted | You feel the cap as soon as people re-authorize. |
| Nango | 10 connections, 10 compute hours, 10 GB | The customer connection, plus compute and data | The 10th customer is the wall, even if traffic is tiny. |
| Zapier MCP | 100 tasks a month | 2 tasks per successful tool call. Failed calls are free. | About 50 successful calls. |
| Pipedream | Development only | Not a production allowance | No production environment. Startup is the first plan that has one. |
1. Composio
Best for: A hosted catalog, a lot of end-user accounts, and a free month of real tool traffic under 100,000 calls.
Composio is the largest free catalog allowance in this category under 100,000 tool calls a month. That is a fact we publish on purpose. Pro, when you leave free, is $29 a month and includes a $29 usage credit that does not roll over, then about $0.0003 per call. At one million calls, Pro is about $29 plus about $270, minus that credit.
Use this row when the job is "the assistant should reach many SaaS apps, and each person connects their own account." Do not use the 100,000 figure to answer "will a retried refund happen once." Write idempotency was not described in the public docs in October 2026. The payment question is in Best Platforms for AI Agents That Handle Payments.
Extra controls are easy to miss on the paid plan. In October 2026, an IP allowlist was about $0.0001 per tool call and a BAA was about $0.0003 per tool call. SSO, SCIM, and customer-managed keys were Enterprise.
2. Swytchcode
Best for: Seeing one checked call leave your own machine, with the secret kept out of the chat, before you decide whether to pay.
A live command is one request that was allow-listed, schema-checked, policy-checked, given its credential, sent to the provider, and written to the log. It is not a page view and it is not a search of the catalog. The free tier is 100 of those a month. The first 2 can run before you create an account. The 100 is sized for evaluating the pipeline. It is not a production quota.
At production volume, Business in October 2026 is 1,000,000 live commands for $149 a month, or $1,490 a year. Pro is $29 a month or $290 a year for 10,000 live commands and 30 days of logs. Business logs are 90 days, and that plan adds Slack or Telegram approval and 5 seats. Free does not include seats or approval.
The 100 looks small next to 100,000 because the units differ. Do not put them in one column and call it a ratio. The pricing page is the source if this article and the site disagree.
3. Arcade
Best for: Trying per-user authorization, where a missing permission starts an OAuth grant, on a few thousand calls.
Free is 2,000 tool calls and 2,000 auth events. Both meters move. A team that reconnects accounts during a pilot can spend the auth events before they spend the tool calls. Team is $25 a month plus $0.10 per auth event and $0.01 per tool call. At a million tool calls, Team is about $10,025, before auth events. That is the number that changes the shortlist, not the $25.
4. Nango
Best for: A product integration you want to try with a handful of design partners, with the function in your repo.
Free is 10 connections, 10 compute hours, and 10 GB. The connection count is the multi-tenancy limit in plain sight. Pay-as-you-go is $50 a month, then $0.29 per connection, $0.72 per compute hour, and $0.50 per GB. You are buying a connect product and compute, not an unlimited assistant. Substitutes grouped by job are in 10 Nango Alternatives for AI Agents in 2026.
5. Zapier MCP
Best for: One person prototyping against apps already on a Zapier account.
Free is 100 tasks a month. Each successful MCP tool call uses 2 tasks, so the practical budget is about 50 successful calls. Failed calls do not use tasks. Pro starts at $19.99 a month on annual billing for 750 tasks. A retrying agent burns this plan fast, because a successful repeat is another 2 tasks. This is the closest free starting point for someone who does not want to install a CLI. It is a poor production plan for an agent that loops.
6. Pipedream
Best for: Building, not launching.
The free plan has no production environment. That line is the one teams misread. Production starts on Startup: $99 a month billed annually, or $150 billed monthly, then per-user and per-credit charges. A credit is 30 seconds of compute. At a million calls, Startup is about $11,979. If a launch plan says "we'll stay on Pipedream free," it is wrong.
How to choose without mixing the meters
Ask these in order.
- Are we evaluating, or are we serving customers? Evaluating fits Swytchcode's 100 live commands, Arcade's few thousand calls, or Nango's 10 connections. Serving customers usually does not, even when a call count looks free.
- Does each customer connect their own account? Read the connection limit before the call limit. Composio's unlimited connected accounts, on the October 2026 free tier, are why teams with lots of end-user sign-in start there.
- Will we need last month's log? If yes, 7 days is already not enough. Put the retention number in the design.
- Will a person have to approve a payment or a delete? If yes, a free allow/deny switch is not that feature. On Swytchcode, budget for Business.
Open source is a different question. A free cloud tier is not a license, and a public repo is not a free production tier. That article is Best Open-Source Tools for AI Agent Integrations. What a small team gives up by not building the login and retry layer is Best Tools for Teams Without a Platform Team.
Which free tool to pick
| If the requirement is | Start with | Leave it when |
|---|---|---|
| The most SaaS tools, free, under 100,000 calls | Composio | You need a documented retry rule for writes |
| One person, apps they already use | Zapier MCP | 50 successful calls is not the product |
| Ten design partners connecting their own apps | Nango | The 11th connection is a customer, not a test |
| Per-user OAuth as the thing you are testing | Arcade | Auth events and tool calls are both gone |
| One governed call from your own machine | Swytchcode | You needed production volume. That is Pro or Business. |
| A workflow you will ship to customers | Not Pipedream free | Free has no production environment |
How we checked these facts
Each allowance is from the vendor's public pricing page in October 2026. The million-call estimates use those published meters: Swytchcode Business $149 flat, Composio Pro about $29 plus about $270 minus the $29 credit, Arcade Team about $10,025, Pipedream Startup about $11,979. Swytchcode's log retention is from the same pricing page: 7, 30, and 90 days. Confirm before you buy.
Follow these steps to spend a few free calls on purpose
These steps are Swytchcode's free path. They are not the install for Composio or Zapier. Use those products' own docs if that is the row you picked.
1. Follow this step to install the CLI
npm install -g swytchcodeOn Windows PowerShell:
irm https://cli.swytchcode.com/install.ps1 | iexOn macOS or Linux:
curl -fsSL https://cli.swytchcode.com/install.sh | shThen swy --version. More is in the CLI quickstart.
2. Follow this step to sign in
swy loginThe first two live commands do not need an account. After that, they do. See the authentication docs.
3. Follow this step to start in test mode
swy init --editor=claude --mode=sandboxChange claude to cursor or codex to match your editor. Sandbox is stored in .swytchcode/tooling.json. It is not an environment variable. See Set up a project.
Use the free calls on one read, in a test account. Do not use them to discover, in production, that a retry charges twice.
FAQ
What is the best free tool for AI agent integrations?
For a hosted catalog under 100,000 tool calls a month, Composio's free tier is the largest allowance in this category, as of October 2026. For a checked call that leaves your own machine, Swytchcode's free tier is 100 live commands. For one person and the apps they already use, Zapier MCP is the shortest start, at about 50 successful calls.
Why is 100 much smaller than 100,000?
They are different units. Composio counts tool calls. Swytchcode counts live commands, meaning requests that went to a provider after the allow list, schema check, policy, and credential injection. Do not divide one by the other.
Does free include a log I can audit?
On Swytchcode, free keeps logs for 7 days. Pro is 30 days. Business is 90 days. If you need a longer record, the free plan is already the wrong plan, even if you have calls left.
Can I use Pipedream's free plan for a real customer?
No. The free plan is development only and does not include a production environment.
Does free include a person approving a refund?
Not on Swytchcode. Free and Pro can allow or deny. Slack or Telegram approval, which does not run if nobody answers within 48 hours, is Business and Enterprise.
Read next
- Explore this article on licenses versus free tiers: Best Open-Source Tools for AI Agent Integrations.
- Explore this article on the layer a small team skips building: Best Tools for Teams Without a Platform Team.
- Current Swytchcode numbers are on the pricing page.
Try the free path on a test account
Set up https://www.swytchcode.com/skills.md and build a read-only test agent. Use sandbox mode. Spend free live commands on one lookup. Do not create, refund, or email. If you are unsure an action is a write, do not add it.If a pricing page disagrees with this article, trust the pricing page and tell us. Discord is the quick place. The contact form works if you are comparing plans for a company.
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