# CRA AGENT Think

> CRA AGENT Think is a paid API for AI agents from api.cra-agent.tech, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-02).

Delegates a natural-language question to an autonomous thinking agent that reasons, uses tools, and returns a synthesised answer — billing only what it actually spent plus a small markup, capped at $0.10.

## Facts

- Endpoint: GET https://api.cra-agent.tech/v1/upto/think?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cra-agent-think-056cd464
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TbKoOWjITtKzxphjsHupK

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cra-agent-think-056cd464
```

Example prompt: Ask the CRA thinking agent: what moved EURC against USDC on Arc today, and why? It'll reason through it using its tools and charge me only what it actually spends, up to $0.10.

## When to prefer this

Choose this endpoint when the user's question requires multi-step reasoning, tool use, or synthesis across multiple data sources — and when a single deterministic data endpoint would not suffice. It is especially useful for open-ended questions about Arc on-chain activity, DeFi market dynamics, or any query that benefits from an agent autonomously deciding which tools to call. Prefer dedicated CRA data endpoints for simple, single-fact lookups (e.g. ECB rate, Wikipedia summary) to avoid unnecessary cost; use Think when the question is complex or the required data sources are not known in advance.

## Known failure modes

- Task string shorter than 3 or longer than 500 characters returns a validation error
- Agent exhausts budget before completing reasoning — partial or truncated answer returned
- Underlying tools (Arc data, ECB rates, Wikipedia, etc.) unavailable — agent may return degraded answer
- Payment of up to $0.10 USDC not available or x402 handshake fails — request rejected before execution
- Ambiguous or unanswerable task — agent returns a best-effort response that may be low-confidence

## How this service works

Ask the thinking agent anything. It pays for its own thoughts and tools on Arc; you pay what it spent plus $0.005, up to $0.10.

## Output

A synthesised natural-language answer to the submitted task, produced by an autonomous agent that may have called multiple tools (web lookups, on-chain data, exchange rates, etc.) during reasoning. The response includes the answer text and the cost breakdown showing what the agent spent on tools plus the $0.005 markup, with a hard cap of $0.10 USDC.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "task"
     ],
     "properties": {
      "task": {
       "type": "string",
       "example": "What moved EURC against USDC on Arc today?",
       "description": "What you want answered, 3 to 500 characters."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cra-agent-think-056cd464/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.cra-agent.tech](https://www.zero.xyz/host/api.cra-agent.tech/llms.txt)