{
  "markdown": "# GYIBB Truth Engine — MCP Server\n\n**Cited product-review verdicts synthesised from real user voices. Free, remote, no API key.**\n\n- **Endpoint:** `https://gyibb.com/mcp`\n- **Transport:** streamable-http\n- **Auth:** none\n- **Docs for agents:** <https://gyibb.com/for-agents>\n\nMost product \"reviews\" on the web are marketing copy, affiliate filler, or\nincentivised ratings. GYIBB reads what actual users said on Reddit, Hacker\nNews, Lemmy, Stack Exchange, ProductHunt, YouTube and Trustpilot, and\nsynthesises it into a structured verdict an agent can act on — with the raw\nquotes still attached.\n\nEvery claim traces back to a source. A product without **10+ user voices\nacross 2+ platforms** is refused rather than written up from thin air: an\nempty answer beats a confident guess.\n\n## Connect\n\n### Claude Desktop\n\nAdd to `claude_desktop_config.json`:\n\n```json\n{\n  \"mcpServers\": {\n    \"gyibb\": {\n      \"type\": \"streamable-http\",\n      \"url\": \"https://gyibb.com/mcp\"\n    }\n  }\n}\n```\n\n### Any MCP client\n\nPoint it at `https://gyibb.com/mcp` over streamable-http. No signup, no key,\nno OAuth. If your client only speaks stdio, bridge it with `mcp-remote`:\n\n```bash\nnpx -y mcp-remote https://gyibb.com/mcp\n```\n\n### Verify it's up\n\n```bash\ncurl -N -X POST https://gyibb.com/mcp \\\n  -H 'Content-Type: application/json' \\\n  -H 'Accept: application/json, text/event-stream' \\\n  -d '{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"initialize\",\"params\":{\"protocolVersion\":\"2024-11-05\",\"capabilities\":{},\"clientInfo\":{\"name\":\"curl\",\"version\":\"1\"}}}'\n```\n\nA healthy server answers `200` with `content-type: text/event-stream` and a\n`serverInfo.name` of `gyibb-truth-engine`. The response is an SSE stream, so\nuse `-N` — without it curl waits for a close that never comes and looks like\na timeout.\n\n## Tools\n\n| Tool | Arguments | Returns |\n|---|---|---|\n| `get_product_review` | `query` — product name, slug, or `category/slug` | Full verdict: rating, confidence tier, pros, cons, summary, source breakdown, citation links |\n| `verify_claim` | `product_slug`, `claim` | `supported` / `contradicted` / `mixed` / `insufficient_data`, with the quotes behind the call |\n| `compare_products` | `slugs` — up to 5 | Side-by-side ratings, top pros/cons, confidence, source diversity |\n| `search_products` | `query`, `category` *(optional)*, `limit` *(optional)* | Rating-sorted matches from the catalogue |\n\n`verify_claim` is the one that has no obvious equivalent elsewhere: it answers\n\"is this marketing claim true according to people who bought it\", and returns\n`insufficient_data` instead of inventing a verdict when the evidence isn't\nthere.\n\n## Rate limits\n\n| | `tools/call` per IP per UTC day |\n|---|---|\n| Anonymous | 25 |\n| With public key | 100 |\n\n`initialize`, `tools/list` and notifications are free.\n\nTo raise the quota, send the **public** integration key — it is not a secret,\nit exists to separate real integrations from drive-by traffic:\n\n```\nX-API-Key: we-read-it-so-you-dont\n```\n\n## What the verdicts are built from\n\nReddit · Hacker News · Lemmy · Stack Exchange · ProductHunt · YouTube ·\nTrustpilot · editorial aggregate ratings.\n\nEach review is a synthesis across four layers — what users report, what video\nreviewers show, what aggregate ratings say, and what the brand claims — and\nthe most useful field is usually where those layers **disagree**. Reviews are\nwritten by AI agents against a published methodology, then cross-checked by an\nindependent fact-checking agent before release.\n\n- Methodology: <https://gyibb.com/methodology>\n- Editorial stance: <https://gyibb.com/manifesto>\n\n## Files here\n\n| File | Purpose |\n|---|---|\n| `server.json` | Official MCP Registry manifest (`io.github.Patheras/gyibb-mcp`) |\n| `.well-known/mcp.json` | Server manifest served for discovery — tools, limits, sources |\n\nThe server itself is not in this repository; it is part of the GYIBB platform\nand served at `https://gyibb.com/mcp`. This repo is the public front door:\nmanifest, registry entry, and these docs.\n\n## Licence\n\nFree for read-only use. See <https://gyibb.com/manifesto>.\n\nContact: founder@gyibb.com\n",
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