"A sandbox for executing Python code" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Global stock and UCITS ETF research. Free: 700 successful MCP tool calls per rolling 30 days. Pro: CHF 5/month or CHF 50/year for higher usage. Screen stocks, compare fund costs and holdings, and inspect company risks. No account or API key for public research. Plans: https://bull-run.org/pricing. Connect your Bullrun account through OAuth to use Pro.
Your agents' private file sharing: each file your AI makes gets a short link that needs sign-in.
Persistent context and memory vault for AI. Save your brand, project facts, prompts, skills and sessions once, then use them in Claude, ChatGPT, Cursor and any MCP client.
Technology intelligence feed for AI agents: tech stack, compliance, security.
Mureka AI music: songs, lyrics, stems, sheet music, your own voice as a singer, speech
360 pay-per-call APIs for AI agents over x402 and MPP, settled in USDC on Base ($0.001-$0.25 a call, no account or API key). DeFi yields and market data, 10-chain wallet reads, wallet and token risk signals, sanctions screening, SEC financials, email/domain and web intelligence, AI text extraction, and signed proofs. Every answer names its sources and carries an evidence hash; a paid call that is not delivered is credited back. Built and run by UnyKorn LLC.
Makes on-model clothing photos for online stores: pick a model and scene, shoot, approve frames.
AI video and image generation for any MCP client: Veo, Kling, Seedance, Grok via one OAuth login.
arifOS — a constitutional kernel for AI agents. 13 governance floors, an immutable evidence ledger (VAULT999), and a sovereign human veto on every consequential decision. Forged, not given.
Discover and pay for services from the Nevermined Catalog using a spend-capped budget.
Signed sandbox verdicts on any artifact, plus an agent marketplace. No key, no signup, no payment.
Draft, find, update and sign contracts in fynk, the European contract management platform. Your AI assistant can search and summarize your documents, create contracts from templates or PDFs, fill in parties, signatories and dynamic fields, build templates, manage tags, teams and metadata, and send documents out for e-signature (SES, AES, QES). It acts with your own fynk permissions via OAuth. Requires an Essential, Business or Pro plan (14-day free trial) with MCP enabled by an account admin.
Stock & options risk analytics for AI agents: pre-trade risk scan, IV, gamma walls, Monte Carlo.
Causal guardrail: pass/caution/hold verdict on a causal claim before an agent acts.
EasyGerber brings AI printed circuit board (PCB) design, layout, and routing to MCP-compatible assistants. Describe a circuit or start from firmware pin assignments, search published electronic components, and build schematics using catalog parts with their footprints and available 3D models. Create and revise boards, generate layouts with automatic component placement and routing, inspect previews, and check saved layouts for blocking design issues. Export manufacturing ZIPs containing Gerber and drill files, a bill of materials, and component placement data, or download an editable EasyGerber (.egb) file. Start without signing up. Your agent creates a private guest session for one board, including catalog access, edits, layout, checks, previews, and exports. Sign in through OAuth to work with saved account boards, access permitted organization boards, or save the guest design to your account. Guest support depends on your MCP client and installed integration.
Turn an app screenshot or a product photo into a 10-second vertical AI UGC video ad of a creator showing it. Sign in with OAuth; videos need an agent-media plan.
Shot breakdowns, logos and brand kits for any AI assistant: read a video clip into a measured shot list, make a logo, and build a brand kit from it (palette, vector, favicons, lockups). Paid steps run only at the price they were quoted.
Verify before the agent pays. Screwtape is an independent check on agent work before a payment goes out: invoices, duplicate invoices and reconciliation, with a signed receipt for your auditor. It is independent of your agent's own model and vendor, with no stake in your agent passing. - judge: pass, fail or retry verdict on one agent output, with a score, reasons and a next_step. Optional deterministic checks: required fields, types, formats, sums, regex. - check_duplicate_invoice (/v1/duplicate): opt-in duplicate-invoice check using keyed fingerprints. - consensus: scores agreement across 2 to 16 agent answers and flags false consensus. - Advisory mode: recommends approve, review or return; a person decides. - Receipts: Ed25519-signed. The receipt proves what was checked, when, and the verdict. Verify via POST /v1/receipts/verify or offline; export via GET /v1/receipts/export. - Judged content isn't stored unless you opt in. Free key: 100 calls/day. Or $0.005 USDC per call via x402 on Base or Solana, no key needed. MCP: https://screwtape.ai/mcp Docs: https://screwtape.ai/docs/ Icon: https://screwtape.ai/icon-512.png Tags: verification, evaluation, llm-as-judge, invoices, receipts, x402
Verify an AI agent artifact: schema, emptiness, provenance and mandate authority, Ed25519-signed.
Find AI-isms with evidence and fingerprint a writing voice from samples. 3 of 5 free.
