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Agent-operated cold-email infrastructure: domains, mailboxes, warmup, campaigns, replies, and server-enforced guardrails behind one bearer token (28 MCP/HTTP tools, hosted MCP server + npm CLI, free sandbox).

Create high-quality coloring sheets for free with Colorify AI coloring page generator. Spark your kids' creativity with AI-designed coloring pages

Create coloring pages, reusable characters, and printable books. OAuth and a Business plan are required; AI generation uses credits, while discovery and read-only tools are free.

Official MCP server for Companero, the Romanian company data platform (ANAF, ONRC, Monitorul Oficial, SEAP). Search and screen Romanian companies, get company profiles, balance sheets, financial health, ANAF debts, public procurement contracts, ownership networks and B2B prospect lists. Remote Streamable HTTP with OAuth 2.0; free tools work without an account.

Company lookup, LEI search, SEC filings, and financials for AI agents. 6 tools, free, no API key.

Token cost math for LLM API calls: 69 models across 17 providers, prices verified by ComparEdge. Free, no API key.

Verified SaaS price-change history and watch-log for AI assistants. Data by ComparEdge. Free, no API key.

Verified SaaS, AI, and LLM pricing for 490+ tools: plans, hidden costs, TCO, and alternatives. Free, no API key.

Source-backed US market data for agents: SEC Form 4 insider trades, House and Senate trade disclosures with committee-jurisdiction overlap, 13F holdings and a cross-signal consensus on 4,600+ tickers. Every record links the filing it came from, so an agent can cite instead of assert. 16 tools; free key, and get_demo_composite works with no key.

Did it really happen? Independent Ed25519-signed receipts for AI agents: is a page online, does a domain exist and to whom, can an email receive (no mail sent), heartbeat + did my scheduled task run. Stateless Streamable HTTP MCP server, no account, free during launch then 1 cent per call. Verify any receipt for free.

EU legal research for AI agents: semantic + full-text search over ~48,000 EUR-Lex acts including consolidated versions, daily drift monitoring, answers with verifiable CELEX citations. German, English, French. Remote MCP server at https://conformi.eu/api/mcp — free tier, no key required for article and timeline tools.

Search open freelance and contract assignments from consultant brokers, staffing agencies and job boards across many countries. Filter by role, skills, location and remote, and open full assignment details from your AI assistant.

Copyright protection for agents: text/identity search, metadata evidence, authorized takedowns and outcome monitoring. REST + remote MCP, prepaid credits and a free simulated sandbox.

Web search API and MCP server for AI agents: results as clean Markdown with query-pruned context, plus research, crawl and map. $1 per 1,000 searches; 25 a day free with no key.

Native Mac kanban + project diary with a built-in MCP server so coding agents share one local board. Free.

Lets AI coding assistants search and read ContioReach's headless blog CMS docs, so they write accurate code for Next.js, Nuxt, Astro, SvelteKit, React and more. Free, read-only, no API key.

Smart contract security scan for agents: who controls a contract (owner/proxy admin: renounced, EOA or Safe multisig), owner-gated functions (mint, pause, blacklist, upgrade), proxy status and Slither findings for any Sourcify-verified contract on Ethereum, Base, Arbitrum, Optimism, Polygon, BNB. Free remote MCP; x402 pay-per-call API.

Security intelligence MCP server — 20 tools: CVE lookup (EPSS/KEV), domain recon, SSL, IP reputation, IOC, exploit search, code security. Free, no API key.

Desktop control MCP: your AI sees, clicks and types on your PC, with consent and hard safety blocks. Early release, $20/mo or $200/yr per PC, 7-day free trial.

Cornelius gives Claude and ChatGPT a lasting memory of your people, projects and routines, plus a morning brief. Free. No server, no API keys.

French company data from official public registers (INSEE Sirene, INPI national business register, BODACC legal notices, financial ratios, labels). Tools: search_companies, get_company, get_financials, get_changes, get_group, get_attachments, get_score. API key in an Authorization Bearer header, free plan of 1,000 calls a month.

Search and cite US federal, state, and municipal law with verbatim citations, then run LLC/nonprofit formation intake — free agent-native tools on a remote Streamable HTTP endpoint.

A shared knowledge base people and AI agents read and write together over MCP. Free instances; public workspaces are free.

Live space data for AI agents — rocket launches, ISS passes, launch news. Free, no auth.

Independent AI governance measurement MCP. 11 HTTP tools (7 free + 4 x402). Board 22·22·0 · Hub 885/885/0. Measurement never certification. POST https://councilof.ai/mcp. Registry io.github.CSOAI-ORG/gspc v1.3.0

a shared-expense ledger your agent operates. hosted remote mcp — paste one url into claude, chatgpt or cursor. no repo, no local process, no api key to mint. everyone else in the count gets a no-signup share link. tools: create_count, add_expense, get_balances, settle, add_member, list_counts. free.

We build covdbg: a local stdio MCP server for Windows x64 C++ coverage. Agents measure existing binaries with matching PDBs and inspect uncovered source to guide test edits. Developer sign-in required. Free for public repositories and one private repository per person; paid team plans available.

One key for 63,577 agent tools: scrapers, search, data, AI models. Pay per call, failed runs free. MCP + REST.

Independent trust verification for MCP servers. 7-factor trust scoring, 3,400+ packages indexed, embeddable badges, free API. Agents can query trust scores natively via MCP protocol.

Portfolio & trading-strategy stress diagnostics for AI agents: multi-asset stress with hedge-break detection, a daily preregistered regime outlook and deflated-Sharpe backtest-integrity checks. Remote streamable HTTP, free tier, no auth.