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Lantern Works GPU Prices: daily GPU rental price comparison

io.github.connormatthewdouglas/lantern-works-dealsconnormatthewdouglasstreamable-httpv0.3.13Scanned

GPU rental prices checked daily, with price history and change feed; stack optimizer; AI-infra deals

7 tools: 2 change things and 5 only read.

Tools: 0 delete, 0 irreversible, 2 write, 5 read.
  • Reads private data · 1
  • Reads text others write · 7
  • Can send data out · 0
  • No findings

Anlyon alternative

2 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

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Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

7 tools

Changes things 2Claude Code: ask
  • optimize_agent_stackEstimate a monthly stack cost from a short description of the agent being built.Reads text others writeNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Estimate a monthly stack cost from a short description of the agent being built. description: free text, e.g. 'scrapes 20k JS pages/month via 5 GB residential proxies, 3k search queries, summarizes with an LLM, budget $300/mo'. Parsed deterministically (keywords/regex, no LLM) into components: gpu, scraping, proxy, search, llm_api, email, hosting, database, monitoring. Optional fields override the parse: gpu_hours (GPU-hours/month), gpu_model ('H100', 'A100', 'RTX 4090'), model_size_b (billions of params; sets a minimum VRAM using FP16 x 1.2), scrape_pages, js_rendering, proxy_gb, search_queries, emails_sent, llm_api, monthly_budget_usd. Each component gets the cheapest option with a cited price among tracked providers, with calc, source_url, verified_at, referral_disclosure (set when the link is a referral link) and manual-signup notes. Components with no cited price say 'no sourced price tracked' (nothing is estimated). Totals show the math and say whether they are complete. Pulled listings are excluded. Every option has data_age_hours, degraded (> 48 h) and stale (> 7 days); max_data_age_hours drops older options (excluded_too_old counts them). Same data as optimize_stack, compare_gpu_prices and the deal feed.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • optimize_stackCheapest suitable stack among tracked providers for monthly needs (set the quantities you need, rest 0).Reads text others writeNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Cheapest suitable stack among tracked providers for monthly needs (set the quantities you need, rest 0). scrape_pages: pages/month without JS rendering. scrape_pages_js: pages/month needing JS rendering. proxy_gb: residential proxy GB/month. emails_sent: transactional emails/month. search_queries: search API queries/month. gpu_hours: GPU-hours/month (1 GPU), optionally gpu_model e.g. 'H100', 'A100', 'RTX 4090'. Each line has the chosen plan, monthly_cost_usd, calc, vendor quote, source_url, checked_at and assumptions, plus alternatives. A vendor price that isn't published is 'unknown' (never estimated). manual_signup_only=true means a human must sign up (never automate it); exclude_manual_signup=true drops those plans. Same data as https://thelanternworks.com/api/v1/stack-pricing.json and /tools/stack-optimizer/.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
Only reads 5Show 5 read-only tools
  • compare_dealsCompare 2-5 deals side by side (price, unit, offer type, code, verification), best value first.Reads text others writeNo findings

    Why it is in this group

    • The name "compare_deals" says "compare": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Compare 2-5 deals side by side (price, unit, offer type, code, verification), best value first.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • compare_gpu_pricesCompare tracked GPU rental prices for one model (e.g.Reads text others writeNo findings

    Why it is in this group

    • The name "compare_gpu_prices" says "compare": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Compare tracked GPU rental prices for one model (e.g. 'H100', 'A100 SXM', 'RTX 4090', 'L40S'), cheapest first. Same data as https://thelanternworks.com/api/v1/gpu-prices.json. Sorted by hourly_usd ascending; each result has source_url and checked_at. 'Cheapest' means cheapest among tracked providers, not the whole market. limit 1-25. Unknown model returns not_found listing tracked models. Each result has tier_class: on-demand | community | marketplace | interruptible (spot/preemptible) | reserved | dedicated-monthly. Reserved (reservation/commitment 'starting from') rates are left out unless include_reserved=true, and even then they are never reported as cheapest. The cheapest overall can be spot or community capacity; on_demand_only=true keeps only on-demand rates, and the summary names the cheapest on-demand rate when the overall cheapest isn't. include_history=true adds each result's price_history (daily-snapshot change points) and history.recent_changes (price changes for this model among tracked providers, last 30 days) from /api/v1/gpu-prices/history.json. Each result has data_age_hours (hours since its price was last verified), degraded (> 48 h) and stale (> 7 days). max_data_age_hours (optional) drops older rates; excluded_too_old reports how many were dropped.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • get_dealGet one deal's public record by id, including redeem_url and agent_instructions.Reads text others writeNo findings

    Why it is in this group

    • The name "get_deal" says "get": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    • untrusted-inputThe description's first sentence says "get" and "url": it reads web pages, which anyone can write.
    Description, as the server wrote it
    Get one deal's public record by id, including redeem_url and agent_instructions.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • get_price_changesGPU rental price changes among tracked providers, newest first, each with old/new hourly price, change_pct, direction and the vendor source_url.Reads text others writeNo findings

    Why it is in this group

    • The name "get_price_changes" says "get": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    GPU rental price changes among tracked providers, newest first, each with old/new hourly price, change_pct, direction and the vendor source_url. since: 'YYYY-MM-DD' returns every change on or after that date (daily snapshots in /api/v1/gpu-prices/history.json); omitted returns the latest day's moves (/api/v1/gpu-price-changes.json). gpu: optional model filter (substring, e.g. 'H100'). limit 1-200. Includes data_checked_at and next_refresh_utc (prices refresh daily at about 10:23 UTC), so you can call again after the next refresh to see what moved.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • search_dealsSearch agent work-stack deals (compute, search, email, unblock, hosting...).Reads private dataReads text others writeNo findings

    Why it is in this group

    • The name "search_deals" says "search": a word for reading.

    What it can reach

    • private-dataThe description's first sentence says "search" and "email": it reads mail.
    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    • untrusted-inputThe description's first sentence says "search" and "email": it reads inbound email, which other people can write.
    Description, as the server wrote it
    Search agent work-stack deals (compute, search, email, unblock, hosting...). offer_type: verified_discount | listed_discount (not confirmed; verified_at null) | free_tier | trial | standard_referral | credit_only_referral. max_price excludes deals with unknown price. limit 1-25. Pass next_cursor back as cursor to page.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged outbound.

Reads private data1
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write7
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

No check matched anything in these tool definitions. That is not a safety guarantee.

History

Changes to its tool definitions and to its remote endpoint, newest first.

  1. Tools7 changed.~7 changedView diff
All changes to this server

Install

Pinned to version 0.3.13. Values in angle brackets are yours to fill in.

claude mcp add --transport http lantern-works-deals https://lantern-works-mcp.lantern-works.workers.dev/mcp?ref=mcp-registry
claude mcp add --transport http lantern-works-deals https://lantern-works-mcp.lantern-works.workers.dev/mcp?ref=mcp-registry

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__lantern-works-deals__compare_gpu_prices",
      "mcp__lantern-works-deals__get_price_changes",
      "mcp__lantern-works-deals__search_deals",
      "mcp__lantern-works-deals__compare_deals",
      "mcp__lantern-works-deals__get_deal"
    ],
    "ask": [
      "mcp__lantern-works-deals__optimize_stack",
      "mcp__lantern-works-deals__optimize_agent_stack"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as lantern-works-deals. Review it before you use it.

Capability tags behind 7 rules
  • mcp__lantern-works-deals__compare_gpu_prices untrusted-input
  • mcp__lantern-works-deals__get_price_changes untrusted-input
  • mcp__lantern-works-deals__optimize_stack untrusted-input
  • mcp__lantern-works-deals__optimize_agent_stack untrusted-input
  • mcp__lantern-works-deals__search_deals private-data, untrusted-input
  • mcp__lantern-works-deals__compare_deals untrusted-input
  • mcp__lantern-works-deals__get_deal untrusted-input

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.connormatthewdouglas/lantern-works-deals/verify?hash=ea06791bbfad707d62bb01afa4191d4cf6b14fca8ebe8bf76abe040aebd436ad" | jq -e '.changed == false'

Pinned hash ea06791bbfad, from Oct 29, 2026, 15:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.connormatthewdouglas/lantern-works-deals/changes.xml

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Badge

anlyon.dev badge for io.github.connormatthewdouglas/lantern-works-deals
[![anlyon.dev](https://anlyon.dev/badge/io.github.connormatthewdouglas/lantern-works-deals.svg)](https://anlyon.dev/servers/io.github.connormatthewdouglas/lantern-works-deals)

Source: MCP Registry · repository. Synced Oct 29, 2026, 15:18 UTC.