Penny Engine — Agent Operations is answering right now. Last checked 3 min ago. It exposes 18 tools.
Remote MCP utilities for agents: structured data, commerce checks, and x402 paid API discovery.
Uptime history
15 days of history
15 days agonow
100.0%
Uptime 24h
91 of 91 checks
18
Tools
read from the server
296 ms
Response time
average over 24h
open, no key
Access
streamable-http
What changed 7
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 19 October 2026. No other catalogue keeps this.
19 Oct
a tool changed version5 times that day
19 Oct
2 tools appeared
penny_catalog_import_guard, penny_product_evidence
and 4 more, back to 19 October 2026
Nothing serious here today
Today is the operative word: we check Penny Engine — Agent Operations every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.
run in your terminal
claude mcp add penny-engine --transport http https://penny-agent-api-production.up.railway.app/mcpSettings → Connectors → Add custom connector, then paste this address
https://penny-agent-api-production.up.railway.app/mcp~/.codex/config.toml
[mcp_servers.penny-engine]
url = "https://penny-agent-api-production.up.railway.app/mcp".cursor/mcp.json
{
"mcpServers": {
"penny-engine": {
"url": "https://penny-agent-api-production.up.railway.app/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"penny-engine": {
"type": "http",
"url": "https://penny-agent-api-production.up.railway.app/mcp"
}
}
}Available tools 18
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
penny
penny_campaign_economics
Customer acquisition cost and break-even click price. Free, no signup, deterministic.
penny_capability_router
Resolve an agent task to existing Penny Engine capabilities only. Does not execute, purchase, research live web content, or claim to handle arbitrary tasks. Unsupported requests are labeled explicitly. Free, no signup.
penny_catalog_audit
Batch-audit up to 50 product records for duplicate SKUs, missing attributes, malformed URLs and estimated net contribution per order. Useful for scheduled ecommerce catalog ingestion and agent product publishing. No external network calls. Free, no signup.
penny_catalog_import_guard
Before importing a product scrape, compare current and previous batches. Flag duplicate IDs, missing records, invalid prices, currency changes, price jumps and stock anomalies. Return row-level allow/review decisions with before/after evidence. Free trial: 50 rows per snapshot, 16,000-character request. No fetching, storage, payment or automatic writes.
penny_choose_service
Given an agent's real task, get the single best supported Penny Engine payable route, exact $0.001 quote, required input, sample, and buyer-authorized checkout instructions. Includes optional FREE CSV preflight; does not sign, pay or execute a paid call.
penny_cleaning_quote
Commercial cleaning quote by labor and target margin. Free, no signup, deterministic.
penny_csv_to_json
Transform CSV text into a bounded array of JSON records with quoted cell support. Free, no signup, deterministic.
penny_fulfillment_preflight
FREE preflight for a catalog audit or agent-output-batch-qa work order, with $0.001 Base USDC checkout instructions. Never charges, signs, or executes the paid call.
penny_html_extract
Extract structured page title, meta tags, headings and JSON-LD from supplied HTML without browsing or executing scripts. Free, no signup, deterministic.
penny_json_inspect
Parse and inspect bounded JSON input without retaining it. Free, no signup, deterministic.
penny_margin
Unit margin, markup and break-even units. Free, no signup, deterministic.
penny_marketplace_profit
Ecommerce net contribution after goods, fees, ads and shipping. Free, no signup, deterministic.
penny_product_evidence
Retrieve current public product metadata and variant details from supported Allbirds and tentree product URLs. Return source timestamps, hashes, field provenance, conflicts and changes versus a caller-supplied previous snapshot. Narrow free preview; no browser rendering, purchases or background monitoring.
penny_slugify
Turn a short string into a lowercase ASCII URL slug. Free, no signup, deterministic.
penny_subscription_ltv
Simple monthly churn lifetime value estimates. Free, no signup, deterministic.
penny_target_price
Find minimum price for target gross margin after fees. Free, no signup, deterministic.
penny_trend_radar
Get recent US Google Trends rising-search queries and transparent heuristic purchase-intent classification to identify digital product research candidates. Public RSS, cached 10 minutes, no customer or sales data. Free, no signup.
penny_url_clean
Remove common tracking parameters from HTTP links without fetching. Free, no signup, deterministic.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://penny-agent-api-production.up.railway.app/mcp | streamable-http | answering | 267 ms | 3 min ago |
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Penny Engine — Agent Operations — questions
Answers built from our own checks of this server.
What can Penny Engine — Agent Operations do?
It exposes 18 tools, read directly from the server on our last check. Among them: penny_campaign_economics, penny_capability_router, penny_catalog_audit, penny_catalog_import_guard, penny_choose_service, penny_cleaning_quote and 12 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
Is Penny Engine — Agent Operations working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 296 ms. The bar chart above shows every period we have measured.
How do I connect Penny Engine — Agent Operations?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Penny Engine — Agent Operations need an API key?
No. Penny Engine — Agent Operations completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 18 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Penny Engine — Agent Operations?
It answers our handshake in 296 ms on average, which is faster than 48% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.