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dero_get_block_header_by_topo_height

Read-only

Fetch a block header by topological height, DERO's canonical ordering used by indexers, bypassing chain height constraints.

Instructions

Get a block header by topological height (canonical ordering) via DERO.GetBlockHeaderByTopoHeight.

When to call: when you need a header keyed by topo position rather than chain height. Topoheight is the canonical ordering used by DERO indexers; height is the consensus block height.

Input Requirements (CRITICAL):

  • topoheight MUST be a non-negative integer no greater than the current topoheight (call dero_get_info first if unsure).

Output: { block_header: { hash, height, topoheight, timestamp, ... } }.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
topoheightYesTopological height
Behavior5/5

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

Annotations already indicate read-only, non-destructive behavior. Description adds critical constraints: topoheight must be non-negative and ≤ current topoheight, plus output structure. No contradictions.

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?

Concise, well-structured with clear sections (description, when to call, input requirements, output). Every sentence adds value without redundancy.

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 single-parameter read tool with no output schema, the description fully covers purpose, usage, input constraints, and output format. No gaps identified.

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?

Input schema covers 100% of parameters with description. The text adds validation context (non-negative integer, not exceeding current topoheight) beyond schema constraints.

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?

Description clearly states it retrieves a block header by topological height, explicitly distinguishing it from chain height. This differentiates from sibling tools like dero_get_block_header_by_hash.

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?

Provides explicit when-to-call guidance: when you need a header keyed by topo position rather than chain height. Recommends calling dero_get_info for topoheight validation, but lacks explicit when-not-to-use cases.

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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