Upstream MCP Server

Install Upstream MCP server

claude mcp add --transport http upstream-toolweather https://upstream.toolweather.workers.dev/mcp

{
  "mcpServers": {
    "upstream-toolweather": {
      "url": "https://upstream.toolweather.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "upstream-toolweather": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://upstream.toolweather.workers.dev/mcp"
      ]
    }
  }
}

{
  "servers": {
    "upstream-toolweather": {
      "type": "http",
      "url": "https://upstream.toolweather.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "upstream-toolweather": {
      "serverUrl": "https://upstream.toolweather.workers.dev/mcp"
    }
  }
}

Context tax

Connecting this server adds ~1,714 tokens of tool definitions to every model turn (moderate, 5 tools). Measured 2026-10-19 via its hosted endpoint; o200k tokenizer, worst case for clients that load all tools up front. How we measure

Input prices as of 2026-10-06. Excludes your own prompt and output.

Tools (5)

• list_recent_api_changes414 tok

  List the on-demand feed of recent AI and developer API changes (status flips, deprecation-page edits, model retirements, pricing-page edits). Use for a chosen window, one provider, or one kind, when explaining sudden breakage. Not for live up/down (check_api_status) and not for the once-a-day digest, which also covers MCP server breakage (get_digest). Returns summary, count, freshness, and changes[] with provider, kind, title, detail, source, and at, newest first. Status rows arrive within about 5 minutes; doc-page rows every few hours. A limit above 500 is clamped to 500; an unknown provider

• check_model_deprecation376 tok

  Check whether one LLM model id is active, deprecated, or retired, plus its shutdown date and replacement, from that provider's deprecation page (OpenAI, Anthropic, Google, and other tracked LLM vendors). Use before hard-coding or calling a model, or when a call fails with model-not-found. Not for API uptime (check_api_status) and not for a retirement feed (list_recent_api_changes with kind model_retirement, or get_digest). Returns summary, verdict (active|deprecated|retired|unknown), recommended_action (keep_using|plan_migration|switch_now|verify_with_provider), replacement, shutdown_date, evi

• get_digest347 tok

  Read one published daily breaking-changes digest: AI/dev API status flips, model deprecations and retirements, pricing-page edits, and breaking MCP server changes. Use for a once-a-day catch-up. For a filtered on-demand API feed with no MCP section, use list_recent_api_changes; for live up/down, check_api_status; for one model id, check_model_deprecation. Always free (no quota, no x402). Published once at 12:00 UTC as a frozen window since the previous issue (usually ~24h); not updated later. Omit date for the latest; a missing YYYY-MM-DD returns 404 {error:no_issue}. One issue per date, no pa

• check_api_status276 tok

  Check whether one AI or developer API provider (OpenAI, Anthropic, Gemini, Mistral, Groq, GitHub, Stripe, Cloudflare, Vercel, Supabase, Twilio, ~40 total) is up, degraded, or down right now. Use before calling that provider, or right after 5xx/429/timeouts, to choose retry, wait, or a fallback. Not for a model id (check_model_deprecation), the filtered change feed (list_recent_api_changes), or the daily rollup (get_digest). Returns summary, verdict (up|degraded|partially down|down|unknown), recommended_action, incidents, affected_components, checked_at, and freshness; status is rechecked about

• list_providers159 tok

  List every AI and developer API provider Upstream tracks (~40) with id, name, category, current state, checked_at, and status page. Use to pick a provider id for check_api_status, or for one all-providers health pass. Not for one provider's incidents (check_api_status) and not for what changed (list_recent_api_changes or get_digest). No parameters. Always free; does not spend the daily quota. State is refreshed about every 5 minutes. Returns {count, providers:[{id, name, category, state, checked_at, status_page}]}; state is operational, degraded, partial_outage, major_outage, maintenance, or u

Security signals

97/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.

Scan it yourself before installing with vectra-guard, the open-source agent security CLI. Scoring rules

Freshness

Active — last maintenance signal 3d ago. The newest of the signals below sets the band.

1. Last commit (default branch)

   2026-10-16 · 3d ago · GitHub

2. Latest release

   2026-10-15 · 4d ago · GitHub · v0.3.1

3. Package published

   no data · npm/PyPI

4. Registry entry updated

   2026-10-15 · 4d ago · official registry · v0.2.0