# Arch Tools — Workflow Agent

> Arch Tools — Workflow Agent is a paid API for AI agents from archtools.dev, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-13).

Executes a multi-step agentic workflow toward a high-level goal, using a configurable set of tools and a bounded number of steps

## Facts

- Endpoint: POST https://archtools.dev/v1/tools/workflow-agent
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arch-tools-workflow-agent-e03c8f96
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T3Eu15R4aiFzNUcJHHS1t

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 arch-tools-workflow-agent-e03c8f96 -d '<json body>'
```

Example prompt: I need you to find the top 3 trending crypto tokens today, check their sentiment, and summarize the results — use up to 8 steps and feel free to use the crypto-sentiment and extract-page tools to get there.

## When to prefer this

Use this endpoint when you need an AI agent to autonomously plan and execute a multi-step workflow toward a high-level goal, especially when the exact sequence of steps is not known in advance. It is ideal when multiple tools need to be chained together and the orchestration logic should be handled by the agent rather than hard-coded. Prefer it over single-purpose endpoints when the task is complex, open-ended, or requires adaptive decision-making across steps.

## Known failure modes

- Goal is too vague or underspecified — agent may fail to make progress or return an unhelpful result
- Requested tools are not available or misspelled — agent cannot use them and may stall
- max_steps too low for the complexity of the goal — workflow terminates before completion
- Downstream tool failures during execution — partial results or error propagation
- Infinite loop or circular reasoning — agent exhausts steps without reaching goal
- Payment failure (x402) — call not processed if USDC balance is insufficient

## How this service works

Arch Tools — workflow-agent

## Output

A JSON object containing the outcome of the multi-step workflow, including results from each step taken, the tools used, and a final answer or summary aligned with the original goal.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "goal": {
   "type": "string",
   "description": "High-level goal for the workflow agent"
  },
  "steps": {
   "type": "integer",
   "default": 3,
   "description": "Target number of workflow steps"
  },
  "context": {
   "type": "string",
   "description": "Optional additional context for the workflow"
  },
  "max_steps": {
   "type": "integer",
   "description": "Legacy alias for steps"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arch-tools-workflow-agent-e03c8f96/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from archtools.dev](https://www.zero.xyz/host/archtools.dev/llms.txt)