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ck_fs_grep

Search file contents in the project root using grep patterns. Read-only operation returns matching lines with file paths and line numbers.

Instructions

Search file contents inside the bound project root using grep-style pattern matching. Read-only — no files are modified. query is a regex pattern by default; set fixed_strings: true to match literal text without regex. Scope the search with path (a relative directory or glob); omit to search the entire project. Returns matching lines with file path and line numbers. limit caps results (default 50). Use ck_fs_grep to find code patterns or strings inside files. Use ck_fs_find to locate files by name fragment. Use ck_fs_read to read a specific file by path.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fixed_stringsNo
ignore_caseNoWhen true, perform case-insensitive matching.
limitNoMaximum number of results to return.
pathNoFile or directory path relative to the project root.
project_rootNoAbsolute path to the project root directory on the local filesystem.
queryYesSearch query string for filtering or full-text search.
session_idNoUnique session identifier for correlating findings, proofs, budget, and audit trail.
Behavior3/5

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

With no annotations, the description covers read-only nature, regex default, limit, and output format. However, it does not mention case-insensitive default, error handling, or performance implications.

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 a concise single paragraph that front-loads purpose and key parameters without redundant information.

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?

The description adequately covers purpose, parameters, and sibling context, but omits details like default case-sensitivity and behavior on no results.

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 high (86%), and the description adds clarity on query regex behavior, fixed_strings toggle, path scoping, and limit default, adding value 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 it searches file contents with grep-style matching, and explicitly distinguishes itself from sibling tools ck_fs_find and ck_fs_read.

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 guidance on when to use this tool versus alternatives, but does not explicitly state when not to use it.

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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