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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety profile is covered; the description adds what the annotations do not: aggregation across three data sources (Jupiter, GeckoTerminal, on-chain), a red-flags layer, an 'information only, not financial advice' disclaimer, and a per-call $0.002 x402 payment with no charge on failure. It does not describe response shape or freshness/caching behavior beyond source attribution, keeping it below a 5.

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?

It is front-loaded with the core purpose and the return payload, then sibling routing, then pricing — a sensible order. The enumerated field list is long but productive since it tells the agent which questions this tool answers, though the single run-on sentence mixing data domains with pricing could be split.

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?

An output schema exists, so return details need not be restated, and the description still lists the key data categories, sibling alternatives, payment cost and failure-charge policy. What remains thin is freshness or latency expectations and error behavior for invalid mints, minor given the output schema and annotations.

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 100% and the single parameter 'address' is documented as an SPL token mint address in base58. The description adds no format guidance, chain scoping, or accepted address variants beyond the schema, so the baseline of 3 applies with one parameter and a fully documented schema.

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 names a specific verb and resource ('Solana token check') and then enumerates exactly what the resource returns: price, market cap, FDV, liquidity, holders, volume, organic-trading score, verification, holder/developer share, pools, plus on-chain mint/freeze authority, supply, decimals, token program and Token-2022 extensions. It also explicitly distinguishes itself from siblings solana_quote and solana_trending, so an agent can route without opening schemas.

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?

It gives explicit routing conditions: use solana_quote for the best Jupiter swap route for a pair, use solana_trending to list trending/new tokens with flags, and this tool when a single token's market data plus red flags are needed. It also states the pricing model and that failures are not charged, which sets preconditions for calling.

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