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okfn
by okfn

mcp_iati_date_coverage

Check the date range covered by IATI data, selecting activity, transaction, or both date kinds, and get earliest/latest valid dates with counts of valid, missing, or invalid records.

Instructions

Report the date range covered by the configured IATI data.

    Use date_kind to select activity dates, transaction dates or both:
    - activities: planned and actual start and end dates.
    - transactions: dates of financial transactions.
    - all: both activity and transaction dates.

    The result reports the earliest and latest valid date together with
    counts of records containing valid, missing or invalid dates.

    Relevant IATI terms:
    - IATI activity: A development or cooperation intervention published under the IATI standard; it can represent a project, a programme or another unit of work.
  • Activity date: Start or end date of an activity. Each date declares one of four types: planned start, actual start, planned end or actual end.

  • Transaction: Financial operation associated with an IATI activity, identified by its type, date, value and currency.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
date_kindNoall

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
forceNoPlain text message that bypasses LLM processing and should be printed exactly as provided in the user interface.
tableNoTwo-dimensional list (list of rows) representing tabular data, e.g., from CSV or TSV sources. Each row should be a list of cell values.
chartsNoList of dictionaries containing data and configuration for rendering a Chart.js chart in the chat interface.
sourcesYesURL(s) that users can nagivate to to download the data used for the analysis. E.g., landing page, feed, file endpoint, CKAN resource page, etc.
Behavior4/5

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

No annotations are present, so the description carries the full burden. It discloses that the result reports the earliest and latest valid date together with counts of records containing valid, missing or invalid dates, and clarifies that it operates on the configured IATI dataset. This is adequate transparency for a read-only reporting tool.

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 purpose is front-loaded in the first sentence, followed by scannable bullet lists for parameter values and output behavior. The IATI glossary adds useful domain context without redundancy, though it is slightly longer than strictly necessary.

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 tool with one optional parameter, an output schema, and no annotations, the description is complete: it defines the parameter values, describes the computed result, and clarifies relevant IATI terminology. An agent has everything needed to select and invoke the tool correctly.

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

Parameters5/5

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

The input schema has 0% description coverage and only provides a title and default for date_kind. The description fully compensates by enumerating the three allowed values (activities, transactions, all) and defining what each means in the IATI context.

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 verb and resource: 'Report the date range covered by the configured IATI data.' The explanation of activity dates vs transaction dates and valid/missing/invalid counts makes the tool's purpose distinct from sibling transaction-total and search tools.

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

Usage Guidelines3/5

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

The description explains how to choose date_kind values, but it does not explicitly state when to prefer this tool over siblings such as mcp_iati_file_overview or mcp_iati_transaction_totals_by_year. The intended use is implied by the purpose, but no explicit when/when-not guidance or alternatives are provided.

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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