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sifter-ai

sifter-mcp

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create_sift

Create a new sift with natural language extraction instructions to structure documents into typed records for querying.

Instructions

Create a new sift with the given extraction instructions.

Args:
    name: Human-readable sift name
    instructions: Natural language extraction instructions (e.g. "client, date, total")
    folder_path: Optional folder path to link (e.g. '/invoices/2025'); created if it doesn't exist

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYes
instructionsYes
folder_pathNo
Behavior2/5

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

No annotations provided, so the description bears full responsibility for behavioral disclosure. It does not mention side effects, idempotency, conflict behavior, or what happens if a sift with the same name exists. Only parameter descriptions are given.

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 very concise: one line for purpose, then a list of args. No extraneous information. Front-loaded with the main purpose.

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?

The description explains parameters but omits expected output (e.g., does it return the created sift ID?), error conditions, or any constraints. For a creation tool, return value is relevant context.

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?

Despite 0% schema description coverage, the description adds meaningful context: 'Human-readable sift name', 'Natural language extraction instructions (e.g. ...)', and 'Optional folder path ...; created if it doesn't exist'. This goes beyond the bare schema types.

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's action: 'Create a new sift with the given extraction instructions.' The verb 'Create' and resource 'sift' are specific, and it distinguishes from siblings like delete_sift or update_sift.

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

Usage Guidelines2/5

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

The description lacks explicit guidance on when to use this tool versus alternatives. It does not mention prerequisites or scenarios where other tools (e.g., update_sift) are more appropriate.

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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