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create_app

Create a data app on autario in ONE call, owned by you. You give it a name and an entry: either an https URL where the app already runs, or the app's HTML itself (a single self-contained document, max 512 KB) which autario then hosts and serves inside a locked sandbox. The app id is derived from the name, so you never invent one. The new app is PRIVATE: only you can open it, it is in no catalog and at no public URL until you call publish_app. Use this as the FIRST step whenever a user asks you to build them an app, a dashboard, a report page or a tool that runs on autario data | the public catalog (World Bank, FRED, Eurostat, OECD, WHO, IMF, ECB, US Census, SEC) or the user's own connector tables (Google Search Console, GA4, Google Ads, Meta Ads, YouTube, TikTok, Instagram, Facebook, Shopify, LinkedIn). Follow it with write_app_artifact (to save the app's data or saved views), get_app_preview_url (to hand the user a link to try) and publish_app (to make it public). Requires authentication.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesDisplay name of the app. The app id is derived from it (lowercased, hyphenated); needs at least three letters or digits.
contentNoREQUIRED when entry_kind is "upload". The app's entry document, normally a single self-contained HTML file. It runs in a sandbox with no outbound network: read autario data through the sandbox bridge, not through fetch to third parties.
taglineNoOne line saying what the app does, max 200 chars. Worth writing: it is what a user reads in the app store, and an app cannot be indexed without one.
entry_urlNoREQUIRED when entry_kind is "url". Must start with https://.
entry_kindNo"url" = the app already runs somewhere (give entry_url). "upload" = you are sending the app itself (give content). Default "url".
source_urlNoOptional link to the app's open source repository.
content_typeNoType of the uploaded content. Default text/html.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A4.8/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the annotations, the description discloses critical behaviors: the app is created as PRIVATE, is not in any catalog or public URL until publish_app, runs in a locked sandbox, has a 512 KB limit, and requires authentication. This is far more behavioral context than the annotations alone provide.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is longer than average, but it is well-structured and front-loaded with the core purpose. The data-source list is extensive and adds specific guidance, though it could be slightly trimmed without losing essential meaning.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a creation tool with no output schema and sparse annotations, the description covers the full lifecycle: creation, ownership, privacy, sandbox constraints, required authentication, and the recommended follow-up calls. An agent has enough context to invoke this tool correctly and set expectations about the result.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3, but the description adds meaningful semantics: the app id is derived from the name, the content can be a URL or self-contained HTML, and uploaded content runs in a sandbox with no outbound network. These details go beyond the schema's descriptions, though not every parameter gets extra commentary.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource: 'Create a data app on autario in ONE call, owned by you.' It clearly distinguishes this from siblings by framing it as the FIRST step and naming follow-up tools like write_app_artifact, get_app_preview_url, and publish_app.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It explicitly states when to use the tool: whenever a user asks to build an app, dashboard, report page, or tool over autario data. It also gives a concrete workflow sequence with named alternatives for subsequent steps, which makes the intended usage unambiguous.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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