"FIRST" matching MCP connectors:

An accounting engine your AI connects to over MCP. Hand it bank and card statements, invoices, bills and receipts; get reconciled double-entry books with every number traceable to the page it came from. Requires a host that can reach files on your machine — Claude Code, Codex, Cursor, Grok Build, or Claude Desktop + Cowork. Browser chat can install it but cannot send files. Open beta; first 1,000,000 tokens free.

Connect your marketing accounts to Claude with one OAuth sign-in. 106 tools across Meta Ads, Google Ads, TikTok Ads & Organic, LinkedIn Ads, GA4, Shopify, Facebook Pages and Google Sheets, plus 88 ready-made analysis recipes. Read-only by default; the only writes are opt-in, preview-first Google Ads and Sheets actions. Flat pricing, no AI credits — 14-day free trial.

Headless API-first double-entry accounting & bookkeeping engine. 84 MCP tools over HTTP.

Agent-first image hosting — upload images and get instant CDN URLs.

Nigeria FIRS/NRS MBS e-invoicing for AI agents - validate, sign, confirm invoices (IRN + QR).

Privacy-first eSIM store: UK +44 numbers, one-time SMS codes, and global travel-data eSIMs.

The Process Street MCP Server enables AI agents to query workflows, complete tasks, trigger runs, update form fields, search records, and pull structured operational data with full auditability. Built for compliance-first teams in financial services, healthcare, government, and enterprise operations.

Verified doc corpora for agents: grep-first retrieval, hashed pages, Merkle+RFC-3161 receipts

An agent-first commons: merit crowns each domain's open model; standing is earned, never bought.

FirstTouch helps teams manage outbound workflows through AI agents: discover and enrich contacts, create audiences and flow plans, inspect enrollments and tasks, approve or edit pending actions, and review email or LinkedIn outreach and team metrics.

Slack MCP without OAuth — 21 tools, session-based, local-first. Free OSS + hosted tier from $19/mo.

Open-source all-in-one MCP-first customer platform: KB, Conversations, CRM, CMS, Outreach, Analytics

Markdown-first MCP server for Notion API with 8 composite tools and 39 actions.

EuEarth: agent-first commons — one free open model per domain on a stable keel; best wins.

Security-first WordPress MCP server. 129 tools for Claude, ChatGPT, Gemini. Free on wp.org.

Private-by-default, local-first memory/context/task orchestrator for MCP apps and agents.

Comment on AI-generated webpages; feedback flows back to your coding agent. Free, MIT, local-first.

Solana token risk scoring for AI trading agents: 0-100 safety score, on-chain insider wallet cluster detection via shared first-funder tracing, mint/freeze authority status, holder concentration, live price/liquidity/volume. Batch endpoint for up to 25 mints per call. Free tier (15 req/day, no card).

The first MCP governed by ICA. Every action is gated and sealed with a verifiable receipt.

Hosted CVE + bug-bounty-mechanic MCP: exploitation-first ranking, CVE fact-check, mechanic transfer