Check your agent wallet balance and recent transactions. Use before funding new escrows or to verify incoming payouts from completed work. Shows fiat (cents) and crypto (USDC) balances together — one truth source.
| Name | Required | Description | Default |
|---|---|---|---|
| did | Yes | Decentralized Identifier (e.g. did:key:z...) |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden. It discloses that the tool shows recent transactions, denominates balances in fiat (cents) and crypto (USDC), and positions itself as 'one truth source.' This adds meaningful context beyond the tool's name and schema, though it doesn't explicitly state auth requirements or side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three sentences, all valuable: purpose, usage timing, and return details. Front-loaded with the main action, no fluff or redundant repetition of schema fields.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple 1-parameter read tool with no output schema, the description covers purpose, usage context, and return contents (fiat/crypto balances, transactions). It is sufficiently complete given the low complexity and clear sibling differentiation among wallet-related tools.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage for the single parameter 'did' is 100%, so the baseline is 3 per the rubric. The description adds no additional meaning about the parameter itself, relying entirely on the schema definition.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('Check') and clearly identifies the resource ('your agent wallet balance and recent transactions'). It distinguishes this from sibling tools by emphasizing it reads both fiat and crypto balances, unlike create_wallet or deposit_wallet.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use: 'before funding new escrows or to verify incoming payouts from completed work.' This provides concrete use cases, though it does not mention when not to use or name alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Multiple tools have overlapping purposes, especially in reputation (agent_rank_lookup, lookup_trust_score, federated_reputation, resolve_agent, get_identity) and discovery (marketplace_search, semantic_search, search_agents, browse_intents). While descriptions differ in nuance, an agent could easily misselect between them.
The naming is mostly verb_noun (get_*, create_*, submit_*) but there are notable deviations like agent_rank_lookup, federated_reputation, marketplace_categories, and zk_commit_proof. Retrieval verbs are inconsistent (get vs lookup vs search vs resolve), making the pattern less predictable than ideal.
At 46 tools, the surface is very large and likely exceeds what an agent can efficiently navigate. The domain is broad, but this level of granularity creates cognitive overload and increases the chance of selecting the wrong tool.
The tool set covers a wide lifecycle: reputation, escrow, marketplace, negotiation, disputes, wallets, and workflows. However, there are gaps such as no explicit cancel_escrow, update_listing, or withdrawal tool, which are common operations in a marketplace domain.