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Run an API

run_api
Destructive

Execute an API by SKU with a normalized input payload. Call get_api for this SKU first unless you have already read its schema this session: every input schema is strict (unknown fields are rejected, not ignored) and the field names differ between sibling APIs, so an input built from a description rather than a schema usually fails. Before setting a client or MCP tool timeout, call get_api and inspect its latency p50/p95/p99 and sample; p99 is an observation, not a maximum. Requires a valid AnyAPI key as a Bearer token. Charges the USD wallet only on success. Results can be large: pass fields (keep only the keys you need), max_items (cap rows), or summary (outline only) to trim the response and keep it out of your context — these never change what you are charged. Use quote_api first with the same arguments to see the exact price and validate your input without charging.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
jqNooptional: a jq expression to reshape the result; its output replaces 'output' (multiple outputs collect into an array). Example: '.data | {title, description, md: .markdown[:3500]}'. Sandboxed 250ms/2MB budget; on failure the full result is returned with jqError. Does not change cost
inputYesnormalized input payload matching the API input schema
fieldsNooptional: keep only these keys on each result item (dotted paths like 'author.name' descend into nested objects). Shrinks the response without changing cost
sku_idYesthe API SKU slug to execute
contextYesExplain why you are calling this tool and how it fits into the user's overall goal. This parameter is used for analytics and user intent tracking. YOU MUST provide 15-25 words (count carefully). NEVER use first person ('I', 'we', 'you') - maintain third-person perspective. NEVER include sensitive information such as credentials, passwords, or personal data. Example (20 words): "Searching across the organization's repositories to find all open issues related to performance complaints and latency issues for team prioritization."
summaryNooptional: return only a structural outline (top-level keys, item counts, and per-field byte sizes) instead of the full data. Does not change cost
max_itemsNooptional: cap the number of result items returned; a _truncated note reports how many were withheld. Does not change cost

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
hintNooptional nudge. 'large_result:' suggests fields/max_items/summary to keep future responses out of your context. 'paging_unavailable:' means this result came from a source that cannot return a nextCursor, so it may be INCOMPLETE and you cannot page further - re-run with requireCursor true (may cost more per request) if you need the full list
errorNosafe AnyAPI failure code when durable work failed
itemsYesnumber of result rows returned. For per-result SKUs the per-item cost is charged against this; for input-priced SKUs (perItemUnit != result) the charge is per submitted input, independent of this count
outputYesnormalized output payload
statusNodurable request status: queued, running, succeeded, failed, or expired
costUsdYesamount charged to the wallet in USD
jqErrorNopresent only when a jq expression failed; output then holds the full unshaped result and this explains why the reshape did not apply
providerYesthe provider serving the request (AnyAPI)
replayedYestrue when this response replays an identical earlier call (same API, same input) from the last few minutes instead of running again: nothing new was executed and costUsd restates the original charge, it was NOT charged a second time
resultIdNoopaque handle to the full result, cached ~15 min; pass it to read_result to dig deeper for free (no re-run, no charge). Absent when the result was too large to cache
requestIdNodurable request identifier; pass it to get_request to resume without repeating the paid POST
nextActionNomachine-actionable resume instruction present while durable work is pending
serviceOutcomeNoend-to-end AnyAPI service outcome when known
settlementStateNopayment settlement state when known; independent of durable request status

TDQS

A4.9/5.0
Behavior5/5

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

The description discloses important behaviors beyond the annotations: strict unknown-field rejection, Bearer-token authentication, charging only on success, latency p50/p95/p99 caveats, and response-size controls that do not affect cost. It adds substantial operational context without contradicting the readOnly/destructive hints.

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?

The description is dense but well-structured, leading with the core purpose and then layering prerequisites, auth, cost, and response-shaping guidance. Every sentence carries operational value; there is no filler or redundant repetition of schema details.

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?

Given the tool's complexity and rich schema, the description covers preconditions, authentication, cost model, timeout considerations, and how to avoid context overflow. With an output schema present, no essential calling information is missing.

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

Parameters4/5

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

The input schema already documents all seven parameters, so the baseline is 3. The description adds cross-cutting semantic value by explaining that schemas are strict, that input must be normalized, and that fields, max_items, and summary uniformly reduce response size without changing cost—information not obvious from individual parameter descriptions.

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?

The description clearly states a specific verb and resource: "Execute an API by SKU with a normalized input payload." It also differentiates itself from the siblings by explicitly naming get_api and quote_api as separate prerequisite tools, so an agent can tell run_api apart without opening their schemas.

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?

The description gives explicit when-to-use guidance: call get_api first unless the schema was already read, use quote_api first to validate input and see pricing, and consult get_api before setting timeouts. It directly names alternatives and the conditions that select them.

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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TDQS

A4.6/5.0
Disambiguation5/5

Every tool has a clearly distinct purpose: browsing, searching, retrieving full schemas, quoting, executing, reading cached results, and checking balance. No two tools overlap.

Naming Consistency5/5

All tool names follow a consistent verb_noun pattern using snake_case (e.g., list_apis, get_balance, run_api), making the set predictable and easy to navigate.

Tool Count5/5

With 7 tools, the set is well-scoped for the domain of an API marketplace. Each tool handles a distinct step in the workflow without unnecessary bloat or missing essentials.

Completeness4/5

The tool surface covers the full lifecycle of discovering, quoting, executing, and retrieving results from APIs. Minor gaps include no tool for managing API keys or viewing past runs, but these are not critical for core functionality.