https://mcp.postnitro.ai/mcp ↗
The PostNitro MCP server lets AI assistants and agents — Claude (Desktop, Code, and Cowork), Cursor, ChatGPT, and any other Model Context Protocol client — create carousels, image posts, and videos, manage brand kits, audio tracks, and connected social accounts, and schedule posts directly. Instead of writing REST API calls, you connect the server once and your AI assistant gets ready-made tools covering carousel, image, and video generation, brands, audio, social accounts, and scheduling — using the same Embed API key and credits as the REST API.
postnitro is a remote MCP server published at mcp.postnitro.ai. It has been probed 25 times since 9/10/2026. It answered in 25 of them (100.0%), a near-uninterrupted record. Median response time is 308 ms, placing it among the faster endpoints. Its tool list could not be read; the server is closed to direct calls. It answers direct calls with an authentication wall.
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-13 04:35:29 | Auth-gated | 401 | 306 | 401 | 310 | — |
| 2026-09-13 01:33:33 | Auth-gated | 401 | 376 | 401 | 382 | — |
| 2026-09-12 23:31:36 | Auth-gated | 401 | 444 | 401 | 435 | — |
| 2026-09-12 21:29:15 | Auth-gated | 401 | 495 | 401 | 487 | — |
| 2026-09-12 19:27:29 | Auth-gated | 401 | 607 | 401 | 613 | — |
| 2026-09-12 17:24:09 | Auth-gated | 401 | 164 | 401 | 159 | — |
| 2026-09-12 15:21:42 | Auth-gated | 401 | 252 | 401 | 245 | — |
| 2026-09-12 13:29:16 | Auth-gated | 401 | 405 | 401 | 409 | — |
| 2026-09-12 11:39:06 | Auth-gated | 401 | 184 | 401 | 188 | — |
| 2026-09-12 09:47:15 | Auth-gated | 401 | 199 | 401 | 204 | — |
Each block is one measurement round. Green: working response. Amber: responded but the server was returning errors (5xx). Red: no response at all.
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
The two probe legs separately: modern server/discover and legacy initialize.
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
Add this badge to your README — it updates automatically as measurements change.
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# MCP Assistant MCP Assistant provides access to **100+ MCP servers** like GitHub, Notion, Zapier, Supabase, etc. * **Connect & Manage Integrations**: You can configure and connect these integrations/connectors directly from the [MCP Assistant Dashboard](https://mcp-assistant.in/mcp). * **Advanced Features**: It exposes **meta-tools for dynamic MCP discovery** and a **CodeMode tool** that executes programs inside a secure sandbox for programmatic tool calling, workflow execution, and result processing, avoiding expensive LLM tool-calling loops. ## Endpoint Use this URL with your Assistant such as (OpenCode, Cursor, Codex, ClaudeCode, Antigravity etc.): ```text https://api.mcp-assistant.in/mcp ``` --- ## Key Features * **Unified Gateway**: Access 100+ third-party integrations (GitHub, Notion, Zapier, Slack, Discord, Supabase) through a single endpoint. * **Dynamic Tool Discovery**: Run semantic searches across all connected tool schemas. * **CodeMode Sandbox**: Execute JavaScrip
Generate game-ready 3D models, textures, and audio from natural language, over MCP.
Scan any URL for AI agent readability — Vercel Spec, llmstxt.org, and agent-protocol manifests.
AI-native cold email campaign management via Model Context Protocol. ## What You Can Do - **Campaigns** — Create, launch, pause, resume, and delete email campaigns with full lifecycle control - **Leads** — Upload leads from CSV, list, filter, and manage recipients per campaign - **Sender Accounts** — Configure ColdSend native, SMTP, Google Workspace, and Outlook 365 inboxes - **Domains** — Add custom sending domains with automated DNS verification and activation tracking - **Analytics** — Track delivery rates, open/click engagement, reply rates, and compare campaigns side-by-side - **Inbox Health** — Monitor sender reputation, bounce rates, and deliverability scores ## Authentication Pass your ColdSend API key via the `X-API-Key` header. Get your key from [cloud.coldsend.pro](https://cloud.coldsend.pro). ## Transports - Streamable HTTP (`/mcp`)
Advisory policy preflight for AI-agent spend requests; never executes payments or accesses wallets.
Read-only MCP server for The Quiet Protocol's engines, benchmarks, proof, and business data.
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