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OpenZeppelin

OpenZeppelin Contracts MCP Server

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by OpenZeppelin

Stellar Non-Fungible

stellar-non-fungible

Generate a Stellar non-fungible token contract per SEP-50, with configurable features like minting, burning, and access control. Receive the source code as Markdown.

Instructions

Make a non-fungible token per the Non-Fungible Token Standard, compatible with SEP-50, similar to ERC-721.

Returns the source code of the generated contract, formatted in a Markdown code block. Does not write to disk.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
infoNoMetadata about the contract and author
nameYesThe name of the contract
votesNoWhether to enable vote checkpoints and delegation for governance.
accessNoThe type of access control to provision. Ownable is a simple mechanism with a single account authorized for all privileged actions. Roles is a flexible mechanism with a separate role for each privileged action. A role can have many authorized accounts.
symbolYesThe short symbol for the token
burnableNoWhether token holders will be able to destroy their tokens
mintableNoWhether privileged accounts will be able to create more supply or emit more tokens
pausableNoWhether privileged accounts will be able to pause specifically marked functionality. Useful for emergency response.
tokenUriNoThe metadata URI returned by the token contract for every NFT.
enumerableNoWhether the NFTs are enumerable (can be iterated over).
sequentialNoWhether the IDs of the minted NFTs will be sequential.
consecutiveNoTo batch mint NFTs instead of minting them individually (sequential minting is mandatory).
upgradeableNoWhether the contract can be upgraded.
explicitImplementationsNoWhether the contract should use explicit trait implementations instead of using the default ones provided by the library.
Behavior4/5

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

With no annotations provided, the description carries the full burden. It explicitly states the tool returns source code in a Markdown code block and does not write to disk, disclosing the key side-effect-free behavior. No other behavioral traits are needed for this code-generation tool.

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

Conciseness5/5

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

The description is concise with two sentences, front-loading the core purpose and adding essential behavioral details. Every word earns its place.

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

Completeness4/5

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

Given the rich schema and no output schema, the description appropriately covers the return format and side-effect-free behavior. It is sufficient for an agent to select and invoke the tool correctly, though it could optionally mention how the generated code integrates with Stellar.

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

Parameters3/5

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

The input schema has 100% parameter description coverage, so the baseline is 3. The tool description does not add any additional parameter semantics beyond the schema.

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 clearly states the tool generates a non-fungible token contract for Stellar, explicitly referencing SEP-50 and ERC-721. It distinguishes from sibling tools like stellar-fungible and other chain-specific ERC-721 generators.

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

Usage Guidelines4/5

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

The description provides clear context for when to use the tool (Stellar NFT generation, SEP-50 compatible), but does not explicitly mention exclusions or alternative tools. The mention of 'similar to ERC-721' implies a comparison, but no direct 'use X instead' guidance.

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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