Production Schedule Optimizer

data_session_fund

Idempotent

Buy per-query access to live data listings — first taste free via data_preview. Requires an agent API key (Authorization: Bearer or X-API-Key). Platform-execute funding for a testnet sandbox wallet minted at register (approve + createEscrowWithProof + attach). Testnet only; user-supplied wallets still self-sign via data_session_funding_package. Not guest-callable. No REST analogue.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "session_id": "<session_id>"
    },
    "name": "data_session_fund"
  }
}

Input Schema

Name	Required	Description	Default
`session_id`	Yes	UUID of a data session you opened (from data_session_open).

Schema Changelog

Changes observed during successful MCP inspections.

AddedSep 7, 2026

TDQS

A4.7/5.0

Behavior5/5

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

Beyond annotations, it discloses authentication header forms, the testnet/sandbox scope, the platform-executed escrow sequence, and the non-REST nature. These are meaningful behavioral details and are consistent with readOnlyHint=false, idempotentHint=true, and sandboxHint=true.

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 purpose is front-loaded in the first clause, and each subsequent sentence adds a distinct, necessary constraint or alternative. Despite its density, there is no filler.

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

Completeness5/5

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

For a one-parameter, annotated funding action, the description covers operation, auth, environment, wallet source, exclusions, and the sibling to use for self-signed wallets. The lack of an output schema is mitigated by the clear side-effect description.

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% and the schema already describes session_id as a UUID from data_session_open, so the description carries no additional parameter burden. It adds no new parameter-specific semantics, which the rubric treats as a baseline 3 at this coverage level.

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 opens with a specific action and object: 'Buy per-query access to live data listings', and explains the underlying flow ('approve + createEscrowWithProof + attach'). It also contrasts with data_session_funding_package, so it is clearly distinguished from its nearest sibling.

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

Usage Guidelines5/5

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

It states prerequisites ('Requires an agent API key', 'Testnet only', 'Not guest-callable') and explicitly routes self-signing wallet users to data_session_funding_package. This is clear when-to-use guidance with an explicit alternative.

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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