AI Agent Index
ByHeather MacAvelia·Independently reviewed·Published May 1, 2026·Updated Oct 26, 2026
Independently verified against live vendor data on Oct 7, 2026.

Mozilla-built managed web API that returns cited research answers, clean text, schema-matched JSON or completed public-web tasks. 10,000 free credits, plans from $10/mo (USD).

How we scored it

Autonomy

4/5

Integrations

5/5

Pricing clarity

4/5

Evidence

3/5

Setup

5/5

The facts

Tabstack is a managed web API from Mozilla that gives AI models and applications finished web results in one call. Research plans the search, reads the sources, fills gaps, reconciles conflicting information and returns an answer with citations. Extract returns clean Markdown, or JSON matching a schema the caller supplies, from a public URL. Generate turns page content to a custom JSON output under the caller's instructions, and Automate completes a multi-step task on a public website and returns the result. Pages are fetched directly where possible and rendered in a server-side browser when they need one, and an effort setting trades speed for rendering depth. When a schema field cannot be found on the page, the response returns null for that field and the call still succeeds.

Integration is API-first. Tabstack ships official Python and TypeScript SDKs, a CLI, an OpenAPI 3.0.3 specification, and ready-built tool packages for LangChain, the Vercel AI SDK, the OpenAI Agents SDK, the Claude Agent SDK, Mastra, LlamaIndex, eve and Hermes Agent. An official MCP server package, @tabstack/mcp, runs locally through npx and documents setup for Cursor, VS Code and Claude Code. Automate runs on Pilo, Mozilla's open-source (Apache-2.0) browser automation engine, which teams can also run on their own machines against a model provider they choose. Mozilla says Pilo's page compression cuts token usage by 60 to 80 percent. Geotargeting routes a request through a chosen country so region-specific pages resolve as a local visitor would see them.

Pricing is credit-based and shown in dollars on the pricing page. Every new account receives 10,000 free credits with no credit card required, and those trial credits do not expire. Starter is $10 per month with 100,000 credits, Fast research mode, 15 requests per minute and overage at $0.30 per 1,000 credits. Team is $99 per month with 500,000 credits, Fast and Balanced research modes, 25 requests per minute and the same overage rate. Pro is $499 per month with 3,000,000 credits, 100 requests per minute and overage at $0.25 per 1,000 credits. Custom quotas, support and SLAs are arranged through the contact form. Each action has a published credit cost: 10 for Markdown extraction, 50 for JSON extraction, 100 for Generate or Automate, 250 for Fast research and 350 for Balanced research. There is no annual billing option on the pricing page.

The $10 Starter plan includes Fast research only, with Balanced research starting on Team. Automate and Research bill a variable number of actions per call, while Extract and Generate bill one action per call. Starter overage is capped by default at 300,000 credits, a $100 monthly ceiling, after which requests stop. Included credits on paid plans expire at the end of each billing term. Hosted Automate works on public websites only and does not sign in to accounts. Mozilla's data-handling documentation states that Tabstack holds no third-party security certifications today, with SOC 2 and ISO 27001 not currently held.

Tabstack suits developers who want web research, extraction and public-site automation delivered as finished output to their own model or application, from a vendor that does not train on customer payloads. Teams that need automation behind a login should look at Skyvern, which handles logins, 2FA and TOTP codes, or Intuned, which manages login flows through AuthSessions. Teams that want to run an open-source browser agent library on their own infrastructure should look at Browser Use. Teams that want search results from a dedicated web index to feed a model should look at Exa AI.

Current state Q4 2026: Tabstack now leads with Research, the cited-answer endpoint added to the API in January 2026, and the pricing page lists a $10 Starter plan alongside Team and Pro. Mozilla's Trust page commits that neither Tabstack nor its contracted model providers use customer payloads to train models. Tabstack runs on Google Cloud Platform, and the privacy notice names OpenAI and Google Vertex AI as the contracted model providers. Pilo, the open-source engine behind Automate, has 113 GitHub stars. Product Hunt lists a 5.0 rating from 3 reviews.

Pricing

subscription · $10/mo

View pricing ↗

Segment

Business

Setup

easy

Verified

Oct 7, 2026

Transparency

Mostly Public

Contract

Month-to-month

Data training

Not Trained

Human in loop

Not required

Capabilities

web-searchcitationsdeep-researchautonomousdata-analysisbrowser-automation

Pros & Limitations

Editorial assessment

Pros

  • ✓Each call returns finished output (a cited answer, schema-matched JSON, clean Markdown or a completed public-site task), so the calling model skips its own search-and-read loop.
  • ✓Official Python and TypeScript SDKs, a CLI, an MCP server package and ready-built tools for eight agent frameworks.
  • ✓Mozilla commits that neither Tabstack nor its contracted model providers use customer payloads to train models.

Limitations

  • –No third-party security certifications today: Mozilla's documentation states that SOC 2 and ISO 27001 are not currently held.
  • –Hosted Automate works on public websites only and does not sign in to accounts or store credentials.
  • –Research and Automate bill a variable number of actions per call, so their credit cost depends on how many sources or steps each call takes.

Technical Details

Deployment
apicloudcli
Model architectureThird-party models from contracted providers (OpenAI and Google Vertex AI per the privacy notice), with Mozilla's open-source Pilo engine for browser automation
Avg setup timeUnder 5 minutes to a first API call, per Tabstack's docs
Autonomous rateHigh: Research plans its own queries, reads sources, re-queries for gaps and returns a cited answer in one call, and Automate completes multi-step tasks on public websites without per-step approval. An optional interactive mode lets a task pause and request form values from the caller mid-run.
Integrations
Python SDKTypeScript SDKCLIMCPLangChainVercel AI SDKOpenAI Agents SDKClaude Agent SDKMastraLlamaIndexeveHermes AgentClaude CodeCursorVS Code
Security
GDPRCCPA

Similar agents

Rating

4.0/ 5
★★★★★

Editorial score

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Recognition

MCP Server VerifiedListed 2026
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