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privy-io
by privy-io

solana_signTransaction

Sign a Solana transaction using a specified wallet ID and base64-encoded transaction, without broadcasting it to the network.

Instructions

Sign a transaction with a Solana wallet without broadcasting it.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
encodingNoTransaction encodingbase64
walletIdYesID of the wallet to use for signing.
transactionYesBase64 encoded serialized transaction to sign
Behavior2/5

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

No annotations provided. Description does not disclose what the tool returns (signed transaction?), side effects on wallet state, or error conditions. 'Without broadcasting' is the only behavioral hint, leaving significant gaps for an AI agent.

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?

Single sentence with no wasted words. Perfectly concise and front-loaded.

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

Completeness3/5

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

Lacks output schema and does not describe return value. With many sibling signing tools, it sufficiently differentiates by chain and action, but missing output detail reduces completeness.

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?

Schema coverage is 100% with descriptions for all three parameters. The tool description adds no extra meaning beyond the schema's parameter descriptions, so baseline of 3 is appropriate.

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?

Description clearly states the action (sign a Solana transaction) and distinguishes from sibling tools like solana_signAndSendTransaction by specifying 'without broadcasting it'. The verb 'sign' and resource 'transaction' are specific.

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?

Description implicitly guides use by contrasting with broadcasting, but lacks explicit when-to-use or when-not-to-use guidance compared to other signing tools like eth_signTransaction or personal_sign. Still sufficient for most AI scenarios.

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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