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

With no annotations, the description carries the full disclosure burden. It does add real value: it discloses that the recipient address is read from a single canonical config file and only changes with owner approval (implying this call never mutates it), and it bounds the data returned (no escrow/balance/history/other payer data). However, it never states outright that the call is read-only and side-effect free, and says nothing about auth requirements, freshness/caching, or failure modes.

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?

The field list in sentence one is efficient, but the second paragraph bundles unrelated concerns (config-file sourcing, privacy exclusions, parameter semantics) into one dense run-on with parentheticals. The only parameter guidance is tacked onto the very end rather than front-loaded, so an agent scanning for 'what do I pass' must read to the bottom.

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?

With no output schema, the description must describe the return payload, and it does so by enumerating the five data points returned. With a single optional parameter and no nested structures, this is close to sufficient. The remaining gap is format-level: it doesn't say how the schedule is shaped when 'paket' is omitted or what the values (network, asset) look like.

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 is 0% — 'paket' is described only as a nullable integer with default null — so the description must compensate, and it does: 'paket: 1..5 (opsional) untuk jadwal bayarnya' supplies both the valid range and the semantic purpose (selects the payment schedule/package). It does not explain what happens when 'paket' is omitted, which keeps it from a 5.

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 first sentence enumerates the exact contents the tool returns (network, asset, recipient address, order number, payment schedule), which is concrete and specific. It also carves out scope with 'Tidak memuat escrow, saldo, riwayat, atau data pembayar lain', which implicitly separates it from verifikasi_pembayaran and katalog_layanan. It never uses an explicit verb ('mengembalikan'/'menampilkan') and never names a sibling directly, so it stops just 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.

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

Usage is only implied: an agent infers 'call this when you need the official payment destination/order/schedule'. The exclusions (no escrow, no balance, no history, no other payers' data) function as de facto when-not guidance, but no alternative tool or prerequisite is named. There is no explicit 'use verifikasi_pembayaran instead for X' routing.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.