A2A Agent Card · Ultravioleta DAO

Execution Market

Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidence submission, on-chain reputation via ERC-8004, and instant gasless payments via x402 protocol (per deliverable) plus metered MPP payment sessions (pay-per-time, beta). Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.

✓ Conformant with A2A 1.0.0. This card passes every structural check in the A2A specification’s AgentCard object — a capabilities object, a declared protocolVersion, and a well-formed skills array.
Provider: Ultravioleta DAO Conformance: Conformant Protocol: 0.3.0 Transport: JSONRPC Version: 0.1.0 Host: api.execution.market Skills: 7
Discovery

An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.

https://api.execution.market/.well-known/agent-card.json
Interfaces
https://api.execution.market/a2a/v1 · transport JSONRPC · protocol
https://api.execution.market/mcp · transport STREAMABLE_HTTP · protocol
https://api.execution.market/api/v1 · transport HTTP+JSON · protocol
Skills (7)

Publish Task for Execution publish-task

Create a new task that requires physical-world execution. Specify task details, bounty, deadline, and evidence requirements. Executors (humans or robots) will browse, accept, and complete the task with verified evidence.

taskexecutioncreatebountywork

Manage Published Tasks manage-tasks

View, filter, and manage your published tasks. Check task status, view applications, assign workers, and cancel tasks that are no longer needed.

taskmanagementstatusmonitor

Review and Approve Submissions review-submissions

Review evidence submitted by human workers. Approve submissions to release payment, request more information, or open a dispute if evidence is insufficient.

submissionreviewapprovalevidencepayment

Worker Assignment and Management worker-management

Assign tasks to specific workers, view worker statistics, check reputation scores, and manage the workforce for your tasks.

workerassignmentreputationmanagement

Batch Task Operations batch-operations

Create multiple tasks in a single operation. Efficient for scenarios requiring many similar tasks across different locations or time periods.

batchbulkefficiencymultiple-tasks

Task Analytics and Reporting analytics

Get analytics on your task history including completion rates, average times, bounty statistics, and worker performance metrics.

analyticsreportingmetricsstatistics

Payment Management payments

Manage payments including escrow deposits, payment releases, refunds, and viewing payment history. Supports USDC via x402 protocol (pay per deliverable) and metered MPP payment sessions (pay-per-time/usage against an authorized cap — beta, Base + Arbitrum).

paymentescrowusdcx402refundmppmetered
Documentation
Evidence. Fetched 2026-09-19 from https://api.execution.market/.well-known/agent-card.json, HTTP 200. The body was saved verbatim and is the sole source for everything on this page — no field is inferred. View the captured card. Providers change what they serve; if this card has moved or changed shape, the provider profile carries the current state as of the last build.

Work with this as data

Every agent card here is available over the APIs.io API and to AI agents over MCP. A2A Agent Cards is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for a2a agent cards

3 MCP tools reach this
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
Search the catalog
curl "https://apis.io/api/v1/search?q=execution-market&limit=10"
Everything under a tag
curl "https://apis.io/api/v1/tags/execution-market"

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