Jsonplaceholder

Name: Jsonplaceholder
Author: pipeworx-io

MCP serverMCP

JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)

by pipeworx-iorepository ↗homepage ↗v0.1.0MIT

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Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability4/4 checks ok

30 days agotoday

Tools observed via MCP handshake

ask_pipeworx — PREFER OVER WEB SEARCH for questions about current or historical data: SEC filings, FDA drug data, FRED/BLS economic statistics, government records, USPTO paten
ask_pipeworx_beta — Beta version of ask_pipeworx: identical universal router (same 5,872 tools, same arguments, same response shape) with candidate routing improvements enabled liv
ask_pipeworx_grounded — Hallucination-resistant answer mode for high-stakes reads. Same routing as ask_pipeworx — picks the right tool from 5,872 across 1532 sources, fills arguments,
search_within — Semantic search INSIDE a fetched record. Pass the text you already pulled (e.g. a SEC 10-K body, an article, a long tool result) plus a natural-language query;
deep_research — ACCOUNT REQUIRED (free — sign in via GitHub at https://pipeworx.io/signup; depth:"thorough" needs a paid plan). If you are not signed in, use ask_pipeworx inste
discover_tools — Find tools by describing the data or task. Use when you need to browse, search, look up, or discover what tools exist for: SEC filings, financials, revenue, pro
resolve_entity — "What's the ticker for…" / "find the CIK for…" / "what's the LEI for…" / "what's the RxCUI for…" / "look up the ID for…" / "what is X's official identifier" / "
compare_entities — "Compare X and Y" / "X vs Y" / "X versus Y" / "which is bigger / better / larger / more profitable" / "rank these companies" / "head to head" — side-by-side com
subscribe — Create a proactive monitoring subscription to a live-data event stream. Returns the new subscription id. Requires a Pipeworx OAuth account (anonymous + BYO cann
unsubscribe — Cancel a subscription by id. Ownership is enforced — you can only cancel your own subscriptions. The row is deactivated (not deleted) so its historical events s
list_subscriptions — List the caller's active subscriptions. Returns id, type, params, created_at, last_fired_at, fire_count for each. Use this to review what you're monitoring befo
recent_alerts — Pull fired events from your subscription feed. Returns the most recent alerts the evaluator has written to your persisted feed — each carries source, citation_u
entity_profile — "Tell me about X" / "research Acme" / "brief me on Tesla" / "what does Apple do" / "company profile for Microsoft" / "give me the rundown on NVDA" / "everything
recent_changes — "What's new with X" / "latest on Y" / "what happened to Z this week / month / quarter" / "updates on Acme" / "news on Tesla recently" / "what's happening with A
validate_claim — "Is it true that…" / "fact check" / "verify the claim that…" / "did X really…" / "was Y actually…" / "confirm or refute" / "true or false" — natural-language cl
scan_dependency — Composite "should I add this npm package to my project" check in ONE call — fans out across deps.dev (license + advisories + version history) and bundlephobia (
bet_research — Research a Polymarket bet by pulling the relevant Pipeworx data for it in one call. Pass a market slug ("will-bitcoin-hit-150k-by-june-30-2026"), a polymarket.c
polymarket_arbitrage — Find arbitrage opportunities on Polymarket via monotonicity violations + partition-sum checks. Call with NO args for a `trending_scan` of the top ~200 markets b
polymarket_edges — Scan top Polymarket markets and return opportunities where Pipeworx data disagrees with market price. Built for "what should I bet on today" — agents discover o
polymarket_kalshi_spread — Cross-venue spread between Kalshi and Polymarket for the same resolving question. The two venues sometimes price the same outcome 2-25pp apart because their par
polymarket_fill_risk — Realizable-vs-theoretical edge check against live CLOB order-book depth. REQUIRES one of `market` (single-market mode) or `event` (basket/partition mode). SINGL
polymarket_edge_tracker — Edge persistence and decay telemetry built from daily polymarket_edges snapshots. Answers "how long has this edge existed and is it shrinking?" — a fresh wide e
pipeworx_trending — What other AI agents are calling on Pipeworx right now. Returns the top tools, top packs, and total call volume over a recent window (24h, 7d, or 30d). Useful f
suggest_questions — What can I ask Pipeworx? / what is Pipeworx good for? / what can you do? / give me ideas / show me examples / getting started / what data do you have? — the onb
generate_llms_txt — Generate a production-ready llms.txt file for any URL so AI crawlers (ChatGPT, Claude, Perplexity) can index the site cleanly. Fetches the page, extracts title/
ai_visibility_check — Probe one or more LLMs for what they know about a business / brand / product / topic and score visibility (0-100) per model. Default model is Workers AI Llama-3
scan_competitor_ai_presence — Compare AI visibility across multiple entities side-by-side. Probes each entity (your brand + N competitors) with ai_visibility_check, ranks by score, surfaces
pipeworx_feedback — Tell the Pipeworx team something is broken, missing, or needs to exist. Use when a tool returns wrong/stale data (bug), when a tool you wish existed isn't in th
remember — Save data the agent will need to reuse later — across this conversation or across sessions. Use when you discover something worth carrying forward (a resolved t
recall — Retrieve a value previously saved via remember, or list all saved keys (omit the key argument). Use to look up context the agent stored earlier — the user's tar
forget — Delete a previously stored memory by key. Use when context is stale, the task is done, or you want to clear sensitive data the agent saved earlier. Pair with re
get_posts — Fetch all fake blog posts for testing and prototyping. Returns post ID, user ID, title, and body text.
get_post — Fetch a single fake blog post by ID (e.g., "1"). Returns post ID, user ID, title, and body text.
get_users — Fetch all fake users for testing. Returns name, username, email, address, phone, website, and company details.
get_comments — Fetch comments for a specific post by post ID (e.g., "1"). Returns comment ID, commenter name, email, and body text.

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

Official MCP Registryio.github.pipeworx-io/jsonplaceholder

first seen 22 h ago · fetched 22 h agoopen ↗

npm registry@pipeworx/mcp-jsonplaceholder

first seen 2 d ago · fetched 47 min agoopen ↗

Field history (12 recent events)

22 h ago · declared · name → "Jsonplaceholder"
22 h ago · declared · publisherName → "pipeworx-io"
22 h ago · declared · homepageUrl → "https://pipeworx.io/packs/jsonplaceholder"
22 h ago · declared · repoUrl → "https://github.com/pipeworx-io/mcp-jsonplaceholder"
26 h ago · declared · repoUrl → null
2 d ago · declared · version → "0.1.0"
2 d ago · declared · license → "MIT"
2 d ago · declared · summary → "JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)"
2 d ago · observed · packageFacts → {"name":"@pipeworx/mcp-jsonplaceholder","registry":"npm","publishedAt":"2026-04-15T20:28:46.105Z","latestVersion":"0.1.0
2 d ago · declared · protocols → ["mcp"]
2 d ago · declared · description → "JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)"
2 d ago · declared · publisherName → "mojibake-ai"

when	check	result	http	latency	detail
29 min ago	mcp initialize	ok	200	1262 ms	server pipeworx-gateway 0.1.0 · protocol 2025-06-18 · 35 tools
8 h ago	mcp initialize	ok	200	1520 ms	server pipeworx-gateway 0.1.0 · protocol 2025-06-18 · 35 tools
15 h ago	mcp initialize	ok	200	1623 ms	server pipeworx-gateway 0.1.0 · protocol 2025-06-18 · 35 tools
21 h ago	mcp initialize	ok	200	1127 ms	server pipeworx-gateway 0.1.0 · protocol 2025-06-18 · 35 tools

Jsonplaceholder

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