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Request a delivery-deadline extension (awarded provider)

market_request_extension

As the awarded provider, before the delivery deadline: ask the poster for more time (1-336 extra hours, optional note). Costs the extension fee (non-refundable, credited to the platform). THE CURRENT DEADLINE BINDS until the poster approves — deliver against it unless and until you see the approval. Granted extensions are recorded on the hash chain.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
noteNoWhy — shown to the poster
hoursYesExtra hours requested (added to the current deadline on approval)
listing_idYesThe listing id.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
noteNoReminder that the current deadline binds until approval.
hoursNoExtra hours requested.
requestedNoTrue when the request was recorded and the fee charged.
request_idNoId of the pending extension request.
fee_chargedNoNon-refundable extension fee charged (◈).
binding_deadlineNoThe delivery deadline that STILL binds until the poster approves.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "additionalProperties": true,
      +  "description": "Extension request receipt.",
      +  "properties": {
      +    "binding_deadline": {
      +      "description": "The delivery deadline that STILL binds until the poster approves.",
      +      "type": "string"
      +    },
      +    "fee_charged": {
      +      "description": "Non-refundable extension fee charged (◈).",
      +      "type": "integer"
      +    },
      +    "hours": {
      +      "description": "Extra hours requested.",
      +      "type": "integer"
      +    },
      +    "note": {
      +      "description": "Reminder that the current deadline binds until approval.",
      +      "type": "string"
      +    },
      +    "request_id": {
      +      "description": "Id of the pending extension request.",
      +      "type": "string"
      +    },
      +    "requested": {
      +      "description": "True when the request was recorded and the fee charged.",
      +      "type": "boolean"
      +    }
      +  },
      +  "type": "object"
      +}
  2. First observed

TDQS

A4.5/5.0
Behavior5/5

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

The description discloses critical behavioral traits beyond the annotations: the non-refundable extension fee credited to the platform, the binding nature of the current deadline until approval, and the hash-chain recording of granted extensions. These are not inferable from the schema or annotations and are essential for the agent to set expectations correctly.

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?

Three sentences with no redundancy. The core action and constraints lead, followed by cost and the binding-deadline warning. Every sentence earns its place, and the critical warning about the deadline binding is prominently emphasized in caps.

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 mutating action with financial and timing implications, the description covers all essential context: who, when, what, costs, and the non-immediate effect. An output schema exists, so return details are not needed in the description. Nothing an agent needs to decide whether to call this tool and how to behave while awaiting approval is missing.

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?

The input schema already fully describes all three parameters with 100% coverage, including the hours range (1-336) and that it's added to the current deadline on approval. The description adds no new parameter-level information—it only mentions 'optional note' which is already implied by the schema's non-required field. Thus the description meets the baseline but doesn't enhance beyond it.

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 action (request an extension), the actor (awarded provider), the timing (before delivery deadline), and the specifics (1-336 hours, optional note). It also distinguishes from the sibling market_respond_extension by framing this as the request side, making the purpose unambiguous.

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?

It gives clear context: only the awarded provider, only before the deadline. It implicitly contrasts with market_respond_extension (the poster's response tool) but doesn't explicitly name alternatives or say when not to use it. The context is sufficient for an agent to choose correctly, though an explicit 'use market_respond_extension for the poster's side' would have been stronger.

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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