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Fetch records through an adapter

liquid_fetch
Read-onlyIdempotent

Retrieve deterministic data from a connected API adapter using adapter_id and optional endpoint path, returning up to 100 mapped records without an LLM call.

Instructions

Fetch records through a connected adapter, mapped to the target_model you set at connect time — deterministic, no LLM call. Side effects: makes a read-only outbound HTTP(S) request to the connected API using the stored credentials; it is subject to that API's rate limits (Liquid throttles proactively and surfaces 429s with retry hints). Returns {records, data: [up to 100 mapped records], _meta}. Requires an adapter_id from liquid_connect. Use this to pull whole records; to filter/aggregate server-side and get a smaller answer use liquid_query instead; to size a pull before making it, call liquid_estimate first.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
adapter_idYesAn adapter id returned by liquid_connect (or listed by liquid_list_adapters).
endpointNoOptional endpoint path to act on (e.g. "/users"); defaults to the adapter's primary endpoint. Use a path shown by liquid_connect / liquid_list_adapters.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
recordsNoNumber of records returned.
dataNoMapped records (a list, capped at 100; or a single object).
_metaNoCall metadata: adapter_id, service, endpoint, latency_ms (and records when applicable).
errorNo
Behavior5/5

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true. Description adds 'deterministic, no LLM call', 'read-only outbound HTTP(S) request', 'subject to rate limits with proactive throttling and 429 retry hints', and return structure.

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?

Three well-organized sentences covering purpose, side effects, alternatives, and parameters. No filler.

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 tool with 2 params, output schema, and rich annotations, the description provides all necessary context: purpose, prerequisites, behavior, return format, and sibling differentiation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema covers both parameters fully. Description adds context by linking adapter_id to liquid_connect and end point to liquid_connect/list_adapters, and notes optional default behavior.

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 verb 'Fetch records through a connected adapter', specifies determinism and no LLM call, and distinguishes from siblings by naming liquid_query and liquid_estimate as alternatives.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

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

Explicitly says when to use this tool ('pull whole records') and when to use alternatives ('liquid_query for filtering/aggregation', 'liquid_estimate for sizing'). Also notes prerequisite 'adapter_id from liquid_connect'.

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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