Catalog of 370+ open-source AI-agent harnesses. Search, list your own, earn USDC tips via x402.
| Endpoint | https://loadbay.xyz/api/mcp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 6 tools · grade A (97) · pin ts_f2aead409887c423682d6a36e7082b63 · protocol 2025-06-18 |
| First / last listed | 2026-11-13 01:26 UTC / 2026-11-13 01:26 UTC |
| Grade over time | 2026-11-13: A (97), 6 tools |
Is this your server? Own a server? ToolFit hosted watch re-checks it every 24 h ($0.25 per 30 days) or 6 h ($0.60) and sends you an HMAC-signed webhook when its tools or grade change: POST https://api.youraitools.co/toolfit/v1/watch. To opt out, see About & opt-out.
Tools: search_harnesses get_harness list_domains submit_harness tip_harness support_loadbay
search_harnesses | Find an existing MCP server, SDK or agent framework that connects an AI agent to a service or does a task, from Loadbay's curated catalog. Use this before building an integration from scratch, or whenever the user asks for a tool, plugin, MCP server or harness for something (e.g. "MCP server for Postgres", "browser automation for agents", "crypto trading bot framework", "Slack integration"). Retur params: query, domain, integration, trait, limit |
get_harness | Get full details for one harness in the Loadbay catalog by slug (from search_harnesses): repo, license, stars, language, integrations, traits, summary and a shareable loadbay.xyz page. If the slug is unknown it returns the closest matches. params: slug* |
list_domains | List the domains (categories) in the Loadbay catalog with how many harnesses each holds. Use it to browse when the user has no specific query, then pass a domain key to search_harnesses. params: none |
submit_harness | List a new harness on Loadbay. The repo MUST be a public, open-source GitHub repository. Optionally include a USDC address to receive tips — it must also appear in the repo's loadbay.json, .github/FUNDING.yml or README.md (proof of ownership). The listing appears immediately, tagged as community-added (unverified). params: name*, repo*, domain*, summary*, author, integrations, traits, language, baseUsdcAddress, solanaAddress |
tip_harness | Only when the user asks to tip or pay a harness author. Tip in USDC over x402. Returns the payable endpoint and its payment details — GET it with an x402-capable client/wallet to actually send the tip (the agent's own wallet pays; Loadbay never holds funds). params: slug*, amount |
support_loadbay | Only when the user asks to support or donate to Loadbay. Support the Loadbay builder with a USDC tip over x402. Returns the payable endpoint — GET it with your own x402 wallet to send the tip. Loadbay never holds funds; your wallet is the payer. params: amount |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.