agentutility(7)$ man model-selection-brief
/model-selection-brief
PRICE / CALL
$0.05
USDC · base mainnet · scheme: exact
METHOD
POST
CLUSTER
composeCATEGORY
uncategorized
STATUS
● live
NAME
model-selection-brief — model selection / route and cost brief / which model / prompt cost in one call: describe a task and get a recommended model tier, candida…
SYNOPSIS
POST https://x402.agentutility.ai/model-selection-brief
Content-Type: application/json
X-PAYMENT: <signed-transferWithAuthorization>
{ ... }↳ first call →
402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.DESCRIPTION
Model selection / route and cost brief / which model / prompt cost in one call: describe a task and get a recommended model tier, candidate models, and, when you pass a sample prompt, its token count, a projected cost across those candidates, and a compressed version of the prompt. Composite: one call runs model-route-recommend + llm-cost-estimate + token-count + prompt-compress, merged into {route, token_count, cost_estimate, compressed_prompt}. model-route-recommend picks a tier and named models from the task and optional latency/budget/context constraints; token-count and llm-cost-estimate price that exact prompt against the recommended models; prompt-compress shortens the same prompt. Without a sample prompt, only routing runs. Use it as a model selection API, an LLM routing advisor, or a which-model-should-I-call tool.
INPUT — request schema
| property | type | description | req? |
|---|---|---|---|
| task | string | Description of the task the model needs to do, e.g. 'summarize customer support tickets'. Required, max 2000 chars. | required |
| text | string | Optional representative prompt or sample input. When provided, it is token-counted, compressed, and priced across the recommended (or supplied) models. Max 60,000 chars. | optional |
| constraints | object | Optional routing constraints: any of latency, budget, context_length, modality (all strings), e.g. { "budget": "cheap", "latency": "under 1s" }. | optional |
| models | array | Optional model names to price instead of the routed candidates, e.g. ['deepseek-v3']. Only used when 'text' is also provided. | optional |
OUTPUT — response shape
| field | type | description |
|---|---|---|
| task | string | — |
| route | string | — |
| token_count | string | — |
| cost_estimate | string | — |
| compressed_prompt | string | — |
| composed_of | string | — |
| components | string | — |
| degraded | string | — |
EXAMPLES — two ways to call
EXAMPLE 1 · curl
curl -X POST https://x402.agentutility.ai/model-selection-brief \
-H 'Content-Type: application/json' \
-d '{ }'first response =
402 Payment Required with payment requirements; sign + retry with X-PAYMENT.EXAMPLE 2 · mcp
# Install the MCP package for this endpoint's cluster npx -y @agentutility/mcp-<cluster> # Required: EVM private key with USDC on Base export X402_PRIVATE_KEY=0x... # Then call the model-selection-brief tool from your MCP-aware agent.
MCP server handles payment automatically — your coding agent just calls the tool by name.
METADATA
- tags
- composemodelselectionbriefmodel-selection-brief
- methods
- POST
- cluster
- compose
- price
- $0.05 USDC per call
ADJACENT — other endpoints in compose
| endpoint | description | price |
|---|---|---|
| claim-corroborate | Fact check a claim and see exactly who agrees and who disagrees. | $0.05 |
| commodity-brief | Market brief for a commodity: recency-scoped web search headlines on price/supply/demand plus a structured research brief with overview,… | $0.05 |
| company-dossier | Builds a company research dossier in one call: firmographic profile, domain intelligence, WHOIS registration, TLS, and tech stack. | $0.05 |
| content-trust-check | Trust screen for a block of text in one call: is it AI-generated, is it safe (content moderation), and is it a near-duplicate of a refere… | $0.05 |
| contract-terms-brief | Pull SLA terms, named entities, PII flags, and a plain-language summary out of a contract or policy document in one call. | $0.05 |
| course-study-kit | Turn a course syllabus into a study kit in one call: a parsed outline, a sequenced reading/study plan, flashcards, and a bullet summary. | $0.05 |
| cross-border-ops-brief | Cross-border operating brief for a country: the FX rate, country profile, visa requirements, upcoming public holidays, and current local… | $0.05 |
| crypto-signal-scan | Structured, informational signal brief for a token or crypto topic: X/Twitter sentiment, recent web coverage, and (when a fiat quote curr… | $0.05 |
SEE ALSO