FREE · MCP · SERVER
Plug a truth engine
into your AI agent.
Stop letting your assistant invent product opinions from training data. GYIBB is a Model Context Protocol server that grounds every product question in real user voices — Reddit, Hacker News, Lemmy, Stack Exchange, ProductHunt, YouTube — synthesised with cited sources, free and open.
Grounded, not guessed
Each response cites the specific user comments behind the verdict. No hallucinations, no "I think it's around $99."
Cross-platform synthesis
6+ source platforms, with a 10-voice / 2-platform editorial floor. Reviews below the bar return "not found" instead of a thin verdict.
Free, no API key
Connect once, query forever. Rate-limited at the proxy, paid tier coming later for high-volume agents.
Four tools.
get_product_review (query) Fetch GYIBB's full synthesised verdict for a product — rating, pros, cons, summary, source breakdown, confidence tier, and links to every cited platform.
verify_claim (product_slug, claim) Check a specific factual claim ("battery lasts 30 hours", "supports local LLMs") against the product's collected sources. Returns supported / contradicted / mixed / insufficient_data with the supporting evidence quoted inline.
compare_products (slugs[]) Side-by-side rating, top pros and cons, confidence tier, and source platform diversity for up to 5 products. Returns a structured table the agent can format however it wants.
search_products (query, category?, limit?) Keyword search over the GYIBB catalogue. Sorted by rating descending, optionally scoped by category (e.g. headphones, ai-chatbots).
When to call GYIBB.
User intents that GYIBB answers better than training data — because GYIBB always re-checks the live web of user voices, not a 2024-frozen corpus.
"Are Sony WH-1000XM5 actually as good as Bose QC Ultra?"
compare_products(["sony-wh-1000xm5","bose-quietcomfort-ultra-headphones"]) Direct A/B intent — comparison tool returns both side-by-side with real user voice.
"I need a vacuum under $300, what do people actually like?"
search_products("vacuum", category="vacuums", limit=5) → get_product_review for top hits Discovery → drill-down chain. Search ranks by rating, then full verdict on the most promising.
"Does NordVPN really have no logs?"
verify_claim("nordvpn", "no logs policy") Claim-check intent — returns supported/contradicted with cited user quotes from Reddit/HN/Trustpilot.
"Best AI coding assistant right now?"
search_products("AI coding", category="ai-coding") Category-scoped recommendation. Returns rating-sorted list of synthesized verdicts, not LLM training-data guesses.
Quick start.
ENDPOINT
https://gyibb.com/mcp Open, no signup. A per-IP daily quota keeps it fair: 25 tool calls/day anonymous. Want 100/day? Send our public integration key (it's not a secret — that's the point):
X-API-Key: we-read-it-so-you-dont
Only tools/call counts — handshake & tool listing are free. Resets 00:00 UTC.
CLAUDE DESKTOP
Add to your claude_desktop_config.json:
{
"mcpServers": {
"gyibb": {
"transport": {
"type": "streamable-http",
"url": "https://gyibb.com/mcp"
}
}
}
}Restart Claude Desktop. The four tools appear under Available tools → gyibb.
CURSOR
Settings → Tools & MCP → Add Server. Or edit ~/.cursor/mcp.json directly:
{
"mcpServers": {
"gyibb": {
"url": "https://gyibb.com/mcp"
}
}
}Reload Cursor window. Tools appear in the chat tool picker.
CHATGPT / OPENAI AGENTS
ChatGPT's Custom Connectors (Pro/Enterprise) and the OpenAI Agents SDK both speak MCP. Add https://gyibb.com/mcp as a Streamable HTTP server. No auth header needed.
EVERYTHING ELSE
GYIBB speaks vanilla MCP over Streamable HTTP. Any client that supports the
official protocol
works — Windsurf, Cline, Continue, custom orchestrators. Point them at https://gyibb.com/mcp.
What responses look like.
get_product_review("Sony WH-1000XM5") {
"found": true,
"product_name": "Sony WH-1000XM5",
"rating": 8.4,
"confidence": "strong",
"summary": "Best-in-class noise cancellation; build quality draws criticism.",
"pros": ["ANC widely praised across Reddit and HN", "Battery beats competitors"],
"cons": ["Non-folding hinge: 14% of comments flag durability"],
"sources": { "reddit": 42, "youtube": 18, "hackernews": 7 },
"url": "https://gyibb.com/headphones/sony-wh-1000xm5"
}verify_claim("sony-wh-1000xm5", "battery lasts 30 hours") {
"verdict": "contradicted",
"confidence": "strong",
"evidence": [
{ "source": "reddit", "quote": "Getting ~22-24h with ANC on, not 30h" },
{ "source": "hackernews", "quote": "Real-world: ~20h with heavy ANC. 30h is marketing." }
],
"user_reality": "Median user-reported: 20–24h with ANC enabled"
}Seven platforms. One cited verdict.
Every tool response reflects real user opinion. GYIBB synthesises the following public sources with a mandatory editorial floor of 10 voices across 2+ platforms.
Why this is free.
We make money when readers click affiliate links on the public site, not from API access. Letting other agents query the engine costs us almost nothing and grows the trust radius of every cited URL.
Questions, integration help, or partnership ideas → [email protected]