read_file

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

With no annotations, the description carries the full burden of behavioral disclosure. It usefully reveals that content is sourced from the E2B sandbox and that secrets are redacted. However, it omits error behavior, file size limits, encoding, and permission requirements, which are relevant for a read operation.

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

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

The description is concise and well-structured: the first sentence states the purpose, the second clarifies path semantics, and the third adds behavioral context. Every sentence earns its place with no redundancy.

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

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

For a simple read operation, the description covers the core semantics: what, where, and redaction behavior. An output schema exists so return values do not need to be described. It lacks edge-case details (e.g., missing file behavior) but is adequate for the tool's straightforward nature.

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

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

Schema description coverage is 0%, so the description must compensate. It adds crucial meaning to 'path' by stating it is relative to the repository root. However, 'workspace_id' is left to its title alone, with only a hint from 'E2B sandbox' about its role. Partial compensation for the lack of schema descriptions.

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

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

The description clearly states the verb 'Read' with a specific object ('a file') and scope ('within the checked-out repository'). This distinguishes it from siblings like write_file and search_repo by indicating direct file access.

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

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

Usage context is implied but not explicit. No alternative tools are mentioned, and there is no guidance on when to prefer this over search_repo or other file-related tools. The description suggests direct file reads but lacks exclusions or when-not conditions.

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