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Jsonplaceholder

by io.github.pipeworx-io
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JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)

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Status
Unhealthy
Uptime
48.5% over 38 days
Last Tested
Transport
Streamable HTTP
URL
Repository
pipeworx-io/mcp-jsonplaceholder
GitHub Stars
0
Server Listing
mcp-jsonplaceholder

TDQS

A3.8/5.0

Scored across 35 tools

Disambiguation3/5

Most tools have distinct purposes (memory, subscription, polymarket, JSONPlaceholder CRUD), but the ask_pipeworx / ask_pipeworx_beta / ask_pipeworx_grounded trio are near-identical by their own admission (beta 'currently matches ask_pipeworx exactly'), and meta-tools like entity_profile vs compare_entities vs recent_changes vs resolve_entity overlap enough to need careful reading. The very long descriptions do a lot of disambiguating work, which keeps this above a 2.

Naming Consistency3/5

Casing is uniformly snake_case, but the verb conventions are mixed: get_/list_/ask_/scan_/resolve_ verbs coexist with noun-only names (entity_profile, bet_research, deep_research, recent_changes, polymarket_edges, pipeworx_trending). It is still readable and prefixed reasonably (polymarket_*, ask_pipeworx_*), so a middle score fits.

Tool Count2/5

35 tools is well above the 15-tool comfort band and crosses into 'too many' territory, especially with three overlapping ask_pipeworx variants. A broad data gateway justifies a large surface, but several tools (beta router, edge_tracker, kalshi_spread) feel like edge additions rather than essential members.

Completeness3/5

The server is named Jsonplaceholder yet only 4 of 35 tools touch that domain (get_posts, get_post, get_comments, get_users), and those are read-only — no create/update/delete for posts, comments, or users, a notable lifecycle gap. The gateway/meta and polymarket surfaces are broad, but the namesake domain is incompletely covered.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 1 tool update
    • Changedbet_research2 fields changed
      • changedInput schema / examples
        Previous value: -[
-  {
-    "market": "when-will-bitcoin-hit-150k"
-  },
-  {
-    "market": "https://polymarket.com/event/when-will-bitcoin-hit-150k"
-  }
-]New value: +[
+  {
+    "market": "will-kristi-noem-win-the-2028-republican-presidential-nomination"
+  },
+  {
+    "market": "https://polymarket.com/event/will-kristi-noem-win-the-2028-republican-presidential-nomination"
+  }
+]
      • changedInput schema / properties / market / description
        Previous value: -"Polymarket slug (\"when-will-bitcoin-hit-150k\"), full URL (\"https://polymarket.com/event/...\"), or question text (\"Will Bitcoin hit $150k?\"). Dated slugs stop resolving once they settle — Polymarket de-indexes resolved markets — so prefer an undated one."New value: +"Polymarket slug (\"will-kristi-noem-win-the-2028-republican-presidential-nomination\"), full URL (\"https://polymarket.com/event/...\"), or question text (\"Will Bitcoin hit $150k?\"). Dated slugs stop resolving once they settle — Polymarket de-indexes resolved markets — so prefer an undated one."
  2. 2 tool updates
    • Changedbet_research1 field changed
      • changedInput schema / properties / market / description
        Previous value: -"Polymarket slug (\"will-bitcoin-hit-150k-by-june-30-2026\"), full URL (\"https://polymarket.com/event/...\"), or question text (\"Will Bitcoin hit $150k by June 30?\")"New value: +"Polymarket slug (\"when-will-bitcoin-hit-150k\"), full URL (\"https://polymarket.com/event/...\"), or question text (\"Will Bitcoin hit $150k?\"). Dated slugs stop resolving once they settle — Polymarket de-indexes resolved markets — so prefer an undated one."
    • Changedpolymarket_kalshi_spread2 fields changed
      • changedInput schema / examples
        Previous value: -[
-  {
-    "topic": "fed"
-  },
-  {
-    "topic": "btc"
-  }
-]New value: +[
+  {
+    "topic": "fed"
+  },
+  {
+    "topic": "btc"
+  },
+  {
+    "topic": "bitcoin"
+  },
+  {
+    "topic": "fed rate decision"
+  }
+]
      • changedInput schema / properties / topic / description
        Previous value: -"Pre-mapped: fed | btc | cpi | gdp | sp500 | recession | next_pope | next_uk_pm | next_israel_pm | 2028_president"New value: +"Subject to compare. Canonical keys: fed | btc | eth | cpi | gdp | sp500 | recession | next_pope | next_uk_pm | next_israel_pm | 2028_president — but aliases and keywords resolve too (\"bitcoin\", \"fed rate decision\", \"ethereum\", \"inflation\", \"s&p 500\", \"us recession\", \"next pope\", \"2028 election\"). Check resolution.topic_matched_by in the response: \"exact\"/\"alias\" is a curated pairing, \"phrase\"/\"token\" is a keyword guess."
  3. 1 tool update
    • Changedbet_research1 field changed
      • changedInput schema / examples
        Previous value: -[
-  {
-    "market": "will-bitcoin-reach-100k-in-july-2026"
-  },
-  {
-    "market": "https://polymarket.com/event/will-bitcoin-hit-150k-by-june-30-2026"
-  }
-]New value: +[
+  {
+    "market": "when-will-bitcoin-hit-150k"
+  },
+  {
+    "market": "https://polymarket.com/event/when-will-bitcoin-hit-150k"
+  }
+]

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