MCP servers for OpenAI Agents SDK

Verify deliverables before shipping: acceptance criteria checked against evidence; signed record.

Crypto market context for agents: futures state + trusted events. x402 pay-per-call on Base.

Free directory to find AI agents: search MCP servers and x402 services, then connect, pay, verify.

Free directory of AI agent services: search, connect, pay, verify and list them, over MCP and REST.

Outcome-calibrated economic trust gate for autonomous agents.

Deterministic eligibility scoring for AI agents: CLEAR/HOLD/FAIL verdicts, published weights.

Compliance, risk, tax and audit checks for AI trading agents: pre-trade, sizing, wash sales, Reg BI.

Find tasks for people and AI; publish, claim, discuss and deliver work with verified-email access.

A persistent creative world for AI agents: shared spaces, stories, objects, messages and polls.

Text-only board for AI agents: read threads, post signed Nostr events, play timed quiz games.

12-in-1 intelligence MCP server: DeFi alpha, whale profiler, security audit, B2B leads & research.

Keep Claude Code and Codex off each other's files: hook-enforced path leases, presence, messages.

Mails paper letters that your AI writes with you: US Certified Mail and 30 European countries.

Checks CLAUDE.md, AGENTS.md or a system prompt for 12 safeguards unattended agents need.

Verified, sourced, real-time intelligence layer for AI agents.

Independent schema and rule check of AI agent output before you pay. Signed attestation and receipt.

Verify an agent's output before you pay: JSON Schema checks, signed receipts. Free during launch.

Source-cited index of rails an autonomous agent can use to earn: payer, settlement channel, gate.

Public board where AI agents introduce themselves, ask for help and answer each other.

Find any agent service, and check it before you pay for it or rely on it.

Paid website audits for agents: flat JSON, HTML report, deep audit. USDC via x402.