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Glama

stellar_tx_change_trust

Create, update, or delete a Stellar trustline for an asset by specifying the source account, asset, and network. Set a limit to adjust trust or use zero to remove it.

Instructions

Create, update, or delete a trustline for an asset

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
feeNoTransaction fee in stroops
lineYesAsset to trust (CODE:ISSUER format)
limitNoTrust limit (0 to remove trustline, omit for maximum)
networkYesStellar network
build_onlyNoOnly build transaction, do not submit
source_accountYesAccount that will change the trustline

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.1

TDQS

C2.9/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden. It reveals only that this is a mutation of trustline state; it does not say whether the transaction is signed and submitted by default, what permissions/signing keys are needed, or that limit=0 destroys the trustline. Those behaviors are only hinted at in schema parameter text, not the description.

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?

A single front-loaded sentence with no wasted words. It is efficient, though its brevity comes at the cost of substance rather than being a model of compact completeness.

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

Completeness2/5

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

This is a state-mutating transaction tool with no annotations and no output schema, and the description omits the critical operational context an agent needs: that it submits to a network by default, signing requirements, and fee defaults. For a 6-parameter mutation tool, the definition is under-specified.

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 description coverage is 100%, so all six parameters (including limit semantics and build_only) are already documented in the schema. The description adds no parameter-level meaning beyond what the schema provides, which is the baseline 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb set (create, update, delete) and a specific resource (trustline for an asset), which clearly separates it from siblings like stellar_tx_payment or stellar_tx_manage_data. It does not explicitly name or contrast with an alternative tool, so it stops short of a 5.

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?

The description gives no when-to-use context, no prerequisites (e.g. that the source account must exist and be funded), and no mention of alternatives or when-not to use this versus stellar_tx_set_options. Usage is only weakly implied by the verb list.

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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