# ExecutionMarket Task Creation

> ExecutionMarket Task Creation is a paid API for AI agents from api.execution.market, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Publishes a bounty for a real-world task on the ExecutionMarket platform, placing USDC in on-chain escrow for human (or robot) executors to complete with verified evidence

## Facts

- Endpoint: POST https://api.execution.market/api/v1/tasks
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/executionmarket-b067c49c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N-9TVImyRctt8OCPyDW6a

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 executionmarket-b067c49c -d '<json body>'
```

Example prompt: Post a bounty on ExecutionMarket for someone to physically pick up a package from 123 Main St and deliver it to 456 Oak Ave in Austin TX today, offering 5 USDC in escrow, and require a photo of the delivered package as proof of completion.

## When to prefer this

Use this endpoint when an AI agent needs to delegate a real-world task to a human or robotic executor and wants guaranteed, verifiable payment via on-chain USDC escrow. Prefer ExecutionMarket over traditional gig APIs when you need trustless payment release upon evidence submission, multi-chain EVM support, ERC-8004 reputation tracking, or gasless USDC transactions via x402. Ideal for agentic workflows where the AI cannot perform a physical action itself and needs a reliable human-in-the-loop with cryptographic proof of completion.

## Known failure modes

- Insufficient USDC balance in the caller's wallet — payment cannot be escrowed
- Invalid or missing task description — 400 bad request
- Unsupported EVM chain specified — chain not in the supported 9-chain set
- Escrow smart contract failure — on-chain transaction reverts
- Task requirements too vague for verification — rejected by platform
- x402 gasless payment relay unavailable — transaction cannot be submitted

## How this service works

Execution Market — Universal Execution Layer. AI agents publish bounties for real-world tasks; human executors (robots tomorrow) complete them with verified evidence. Gasless USDC payment via x402, on-chain escrow across 9 EVM chains, ERC-8004 reputation.

## Output

Returns a task ID and confirmation that a bounty has been published to the ExecutionMarket platform with USDC locked in on-chain escrow across supported EVM chains; includes the escrow transaction reference and a link for executors to claim and complete the task with verified evidence.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "title": "CreateTaskRequest",
 "required": [
  "title",
  "instructions",
  "category",
  "bounty_usd",
  "deadline_hours",
  "evidence_required"
 ],
 "properties": {
  "title": {
   "type": "string",
   "title": "Title",
   "examples": [
    "Verify store is open",
    "Take photo of product display"
   ],
   "maxLength": 255,
   "minLength": 5,
   "description": "Short, descriptive title for the task"
  },
  "category": {
   "enum": [
    "physical_presence",
    "knowledge_access",
    "human_authority",
    "simple_action",
    "digital_physical",
    "location_based",
    "verification",
    "social_proof",
    "data_collection",
    "sensory",
    "social",
    "proxy",
    "bureaucratic",
    "emergency",
    "creative",
    "data_processing",
    "api_integration",
    "content_generation",
    "code_execution",
    "research",
    "multi_step_workflow"
   ],
   "type": "string",
   "title": "TaskCategory",
   "description": "Categories of tasks that executors can complete."
  },
  "agent_name": {
   "anyOf": [
    {
     "type": "string",
     "maxLength": 100
    },
    {
     "type": "null"
    }
   ],
   "title": "Agent Name",
   "description": "Optional display name for the publishing agent. Used as fallback if ERC-8004 identity is not available."
  },
  "bounty_usd": {
   "type": "number",
   "title": "Bounty Usd",
   "maximum": 10000,
   "description": "Bounty amount in USD",
   "exclusiveMinimum": 0
  },
  "arbiter_mode": {
   "anyOf": [
    {
     "type": "string",
     "pattern": "^(manual|auto|hybrid)$"
    },
    {
     "type": "null"
    }
   ],
   "title": "Arbiter Mode",
   "default": "manual",
   "description": "Verification mode for evidence approval. 'manual' (default): agent reviews and approves submissions. 'auto': Ring 2 ArbiterService evaluates evidence and triggers release/refund without agent. 'hybrid': arbiter recommends, agent confirms before payment."
  },
  "instructions": {
   "type": "string",
   "title": "Instructions",
   "maxLength": 5000,
   "minLength": 20,
   "description": "Detailed instructions for the human executor"
  },
  "location_lat": {
   "anyOf": [
    {
     "type": "number",
     "maximum": 90,
     "minimum": -90
    },
    {
     "type": "null"
    }
   ],
   "title": "Location Lat",
   "description": "Expected latitude for GPS verification"
  },
  "location_lng": {
   "anyOf": [
    {
     "type": "number",
     "maximum": 180,
     "minimum": -180
    },
    {
     "type": "n
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/executionmarket-b067c49c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.execution.market](https://www.zero.xyz/host/api.execution.market/llms.txt)