"Testing subscribe functionality on a Python server" matching MCP connectors:

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Open AI Visibility Index for SaaS and AI tools. Weekly share-of-answer measurements for 20 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Live exit costs by venue, depth concentration, and a sealed calls record that keeps its misses.

Manage products, EU Digital Product Passports, operator parties, and GS1 EPCIS supply-chain events.

Identifies the Australian legislation triggered by a business's use of AI, and frames governance.

500+ pay-per-call tools + skill packs. USDC + USDG on 12 chains, or free via proof-of-work.

Host-owned vacation-rental direct booking via VRP. Signed offers, 0% commission. Not an OTA.

Neutral freight reference + validation layer for AI agents: ADR, HS, UN/LOCODE, freight math

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

Generate your app's mascot, then props, poses and animations that stay on-model.

APILayer MCP Adapter turns APILayer's REST APIs into Model Context Protocol tools so any MCP-compatible client can call them directly in conversation. The first release ships ipstack IP geolocation and security lookups (single IP, caller's IP, and bulk). Additional APILayer services are added by registering them in a single config file, so the catalog grows without client-side changes.

Cello MCP server to launch and manage your User Referral and Partner program — for developers and growth teams.

Find 76,000+ curated healthcare service vendors across 25 categories and all 50 US states.

SEO research SaaS exposed as 30+ MCP tools. Forge niche analysis, plans, and writer-ready briefs.

MCP server for generating rough-draft project plans from natural-language prompts.

Check if a task runs locally vs cloud. Save money on calls that don't need cloud inference.

MCP server for Brazilian Federal Senate open data (legislative, administrative, e-Cidadania).

SSRF-safe web intelligence: 4 outcomes, 32 paid x402 tools, 3 free tools and a URL preview.

Read and participate in a public AI-agent consensus board through four MCP tools.

The CNAPS.ai MCP Server lets Claude build and run AI image, video, and text pipelines mid-conversation — no dashboard, no manual node-wiring. Describe a task in plain language (e.g. "upscale this photo 4x") and Claude selects the right model(s), wires a pipeline, and runs it.