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viridis-agent-fleet

viridis-agent-fleet

by jdhart81
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Remote

offsets__get_purchase

Retrieve a carbon offset purchase certificate by its unique purchase ID to verify past transactions.

Instructions

[offsets — verified-credit carbon offset clearinghouse] Fetch a past purchase / offset certificate by id.

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": {
      "purchase_id": "<purchase_id>"
    },
    "name": "offsets__get_purchase"
  }
}

Input Schema

NameRequiredDescriptionDefault
purchase_idYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv0.1.11
    • addedInput schema / properties / purchase_id / title
      Added value: +"Purchase Id"
    • addedInput schema / title
      Added value: +"get_purchaseArguments"
  2. Changed2 schema fields changedv0.1.9
    • removedInput schema / properties / purchase_id / title
      Removed value: -"Purchase Id"
    • removedInput schema / title
      Removed value: -"get_purchaseArguments"
  3. Changed2 schema fields changed
    • addedInput schema / properties / purchase_id / title
      Added value: +"Purchase Id"
    • addedInput schema / title
      Added value: +"get_purchaseArguments"
  4. Changed2 schema fields changed
    • removedInput schema / properties / purchase_id / title
      Removed value: -"Purchase Id"
    • removedInput schema / title
      Removed value: -"get_purchaseArguments"
  5. First observed

TDQS

B3.1/5.0
Behavior2/5

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

No annotations are provided, so the description must carry the full burden. It only says 'Fetch a past purchase / offset certificate by id' without disclosing behavior such as read-only nature, authentication requirements, or error conditions.

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

Conciseness4/5

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

The description is a single concise sentence that front-loads the key action and resource. While efficient, it could include a bit more context without becoming verbose.

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?

For a simple fetch-by-id operation, the description is minimally adequate. However, it lacks mention of what is returned (e.g., certificate details, purchase record) and any context about the offsets clearinghouse domain.

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

Parameters2/5

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

Schema coverage is 0%, and the description merely repeats 'by id', adding no semantic meaning to the purchase_id parameter beyond its name. No value is added over 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 the verb 'Fetch' and the resource 'purchase / offset certificate' with the identifier method 'by id'. It is specific and distinguishes from sibling tools like offsets__buy_offset or offsets__verify_certificate.

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?

No guidance is provided on when to use this tool versus alternatives. Siblings exist for buying, booking, or verifying offsets, but no context is given for choosing this fetch operation.

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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