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Open Task Relay provides free, bounded public-good tasks that autonomous AI agents can discover, complete, submit, and independently verify.

Scores whether ChatGPT and other AI assistants can read, understand and quote a public website. Remote server, free tools need no account: audit_site, compare_sites, check_llms_txt.

Verified Northeast Ohio construction opportunity intelligence for AI agents, with free project previews through a remote MCP endpoint.

Equity compensation tax and exercise/sell/hedge planning for US employees: ISO exercise schedules with AMT, NSO and RSU calculators, RSU lot ordering, QSBS checks, concentration analysis, and hedge pricing. Federal plus 50-state plus DC tax math. Hosted remote server (Streamable HTTP), free, no API key.

The human-agent interface for your projects. You prioritize and decide; your AI agents pull tasks, raise decisions instead of stalling on questions, and keep diagrams current. Free plan includes MCP with an account.

Agentic AI instruction encoding. 60%+ compression over JSON. Inference-free decode. Any channel.

Run WCAG accessibility and color-contrast audits on any URL and file dev-ready QA issues, straight from Claude Code, Cursor, or Windsurf. Free tier: 3 scans/day.

Check an npm or Python package, or a package.json, for known vulnerabilities and upkeep. Free, hosted, no API key.

Keyless MCP server giving AI agents npm/PyPI/crates.io package intel: metadata, versions, popularity, dependencies, health and advisories. Free tier.

Extract prices, lists and tables from public web pages and get change alerts via RSS, ICS or webhooks. Free tier plus x402 pay-per-call.

Correlation and ETF holdings overlap for 4,700+ US stocks and ETFs, any of 11.3M pairs. Free, no API key.

Give your agent 250,000+ upcoming events in any city, collected from 90+ sources into one clean database and ranked for the signed-in person. Free to connect.

Remote MCP server for prediction markets — search and compare live odds across Polymarket, Kalshi, and Limitless from Claude, ChatGPT, or Gemini. Six read-only tools, free tier available.

Search people, companies, and open roles on Parlel, an open professional network. Free, no API key — 8 tools for jobs, companies, candidates, and watch agents.

Remote Streamable HTTP MCP for honest resume/cover letter tailoring. Free generate; Stripe unlock for downloads. MCP: https://pasteapply.com/mcp

Let AI agents hire verified human experts for real-world tasks — legal review, medical analysis, code review, research, and more. Self-register via MCP and get $50 free credits instantly.

Open-source MCP server for job application management — 73 tools, 18 workflows, 18 job portals, React dashboard, email integration, calendar, multi-profile. Runs locally, free, privacy-first.

Signed receipts for agent actions — adjudicate attestations against policy; verify any receipt offline, free, no account.

Extract text, metadata, and tables from PDFs via public URL or base64. Agent-friendly, provider-free.

Generate PDFs and PNG images from HTML, Markdown, URLs or Handlebars templates; free API key with 100 renders a month.

PDF URL → extracted text for bots. Free try then prepaid TEST. Sole entry https://pdf.kymac.co/llms.txt

Convert PDFs into clean, structured Markdown from any MCP client. Backed by the PDFtoMarkdown.ai API; free tier plus pay-per-page credits, no subscription.

Connect Peil to Claude (or any MCP client): log hours, draft invoices from unbilled hours, and get financial insights in your freelance practice. All in natural language.

Current validated behavioral-health NPIs newly pending first-time Medicare enrollment, enriched from NPPES; free 10-row preview.

Reads PDFs and images into agent context as markdown or plain text. $0.75 per 1,000 pages, exact per-call cost reporting, free cost estimator, spend caps. Hosted at mcp.pennyocr.com.

Penny Press — Free for humans. Pennies for machines. Essays on freedom, economics and philosophy. Free for humans to read; pay-per-read for AI agents via x402 micropayments (USDC on Base, $0.01–$0.05 per essay). Remote MCP server with essay-discovery tools.

Fresh building permits from six Tampa Bay, Florida jurisdictions, with job value, contractor, licence and trade (roofing, HVAC, solar, pool...). Two free tools; paid tools cost $0.01 to $0.10 per call in USDC via x402.

MCP server for US building-permit data — free metro/trade lead previews and address permit-history lookups, no signup; full datasets and settlement-oracle attestations billed per call via x402 (USDC on Base).

Check a US pest control license or phone number against 35 state regulators' records, find licensed companies by city, see typical prices, and get a free request link.

Drug safety intelligence API with 19 MCP tools. Covers 358 drugs across 1M+ FDA adverse event reports with real-time risk scoring, pharmacovigilance signal detection (PRR/ROR), company portfolio analysis by ticker, and AI-powered analyst briefs. Free tier: 100 calls/day.