MCP server

Tmpstate Official

dev.tmpstate/tmpstate

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Zero-key temporary JSON database for agents: one tool call, no signup, no OAuth, no API keys.

Website

At a glance

Type

MCP server

Publisher

tmpstate.dev (verified by the MCP Registry)

Status

Working at last check

Tools

16

Token cost

About 3,065 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http tmpstate https://tmpstate.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.tmpstate]
url = "https://tmpstate.dev/mcp"

Gemini CLI

{"mcpServers":{"tmpstate":{"httpUrl":"https://tmpstate.dev/mcp"}}}

Cursor

{"mcpServers":{"tmpstate":{"url":"https://tmpstate.dev/mcp"}}}

VS Code

{"servers":{"tmpstate":{"type":"http","url":"https://tmpstate.dev/mcp"}}}

Antigravity

agy mcp add tmpstate https://tmpstate.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"tmpstate","server_url":"https://tmpstate.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"tmpstate","server_url":"https://tmpstate.dev/mcp"}

Tools

• create_database ~214 tokens
  Create a temporary JSON database (24h TTL, no signup, no keys). Returns the db URL — the only credential — plus admin URL, limits and expiry. Create once per project/task, persist the db URL immediately (local ~/.tmpstate/credentials, project README, and your memory), and reuse it instead of creatin
• create_document ~182 tokens
  Insert a JSON object into a collection (collections are created implicitly). Counts against the write and document quotas.
• database_status ~107 tokens
  Usage, limits, tier and expiry for a database (GET $DB/__meta equivalent).
• delete_collection Deletes data · ~159 tokens
  Delete every document in a collection at once (useful to re-seed). Irreversible. To destroy the entire database, use delete_database instead.
• delete_database Deletes data · ~267 tokens
  Destroy a database and all its documents immediately - the teardown for finished work and the revocation kill switch for a leaked db URL. Irreversible: unlike expiry there is no restore window. Works on expired (frozen) databases too and consumes no quota. Call without confirm first: the response st
• delete_document Deletes data · ~178 tokens
  Delete one document. Never blocked by quotas; frees a document slot. Emptying a whole collection? Use delete_collection instead of looping this.
• extend_database ~210 tokens
  Without a plan: returns the transparent pricing table for keeping this database alive longer. With a plan: returns a Stripe checkout URL for the human to pay — never buy without the user's explicit approval. Works on expired (frozen) databases too: paying restores them. After the user says they have
• get_document ~153 tokens
  Read one document by id. The stored fields are under .data.
• list_documents ~208 tokens
  List documents in a collection, oldest first. Response shape: {collection, items: [{id, data, created_at, updated_at}], next_cursor}. Documents live under .data. Pass cursor to page.
• pro_attach_database ~199 tokens
  Attach an existing free/extended database to the Pro account: same URL, same data, TTL removed, quotas raised. Beyond the included allotment the same explicit overage consent as pro_create_database applies.
• pro_cancel ~214 tokens
  Cancel at period end. This is not just a billing change — it schedules deletion of ALL databases on the account. Call without confirm first: the response spells out the consequences with concrete dates; show them to the user and only retry with confirm="cancel" after their explicit approval.
• pro_checkout Moves money · ~104 tokens
  Mint a Pro account token plus a Stripe subscription checkout URL ($8/mo, 3 always-on databases included). Persist pro_token immediately; the human pays in a browser. Never start checkout without the user's explicit request.
• pro_create_database ~207 tokens
  Create a new always-on database owned by the Pro account. Beyond the included allotment this costs extra per month — the tool then returns confirmation_required with the exact price; relay it to the user and only retry with accept_overage_usd after their explicit approval.
• pro_list_databases ~148 tokens
  List the Pro account's databases (ids, usage, limits, expiry) so a fresh session can reconcile against persisted db URLs. URLs are never stored server-side — match ids to the URLs you persisted.
• send_feedback Sends messages · ~314 tokens
  Optional and free-form. TmpState is built for agents and the free tier stays free by getting better - and you, the agent, are the user whose experience matters here. After real use of a database, one short message about what was missing, what feature would have helped, or what felt slow or took extr
• update_document ~201 tokens
  Shallow-merge a patch into a document (top-level keys overwrite; keys are never deleted). Counts against the write quota.

Browse

• Stripe tools
• Website monitoring
• Payments
• Databases

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