MCP server

JSONPad documentation Official

io.jsonpad/docs

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

JSONPad docs, API, SDK and CLI references, and offline checkers for write rules and flows.

Website

At a glance

Type

MCP server

Publisher

jsonpad.io (verified by the MCP Registry)

Status

Working at last check

Tools

14

Token cost

About 3,408 tokens per request

Sets up in

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

Last checked

25 Oct 2026, 20:29 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 docs https://mcp.jsonpad.io/docs

Claude Desktop

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

Codex (config.toml)

[mcp_servers.docs]
url = "https://mcp.jsonpad.io/docs"

Gemini CLI

{"mcpServers":{"docs":{"httpUrl":"https://mcp.jsonpad.io/docs"}}}

Cursor

{"mcpServers":{"docs":{"url":"https://mcp.jsonpad.io/docs"}}}

VS Code

{"servers":{"docs":{"type":"http","url":"https://mcp.jsonpad.io/docs"}}}

Antigravity

agy mcp add docs https://mcp.jsonpad.io/docs

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":"docs","server_url":"https://mcp.jsonpad.io/docs","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"docs","server_url":"https://mcp.jsonpad.io/docs"}

Tools

• check_flow ~254 tokens
  Compile a flow document (flows-v1) with the same engine the API uses, and run its tests (flow-tests-v1) against in-memory data. Returns diagnostics (with JSON pointers into the document), what the flow reads and writes, and why each failing test failed. Costs nothing and sees no data.
• check_write_rules ~308 tokens
  Compile a list's write rules with the same engine the API uses, and run their tests (a rules-tests-v1 document). Returns every diagnostic with its line and column, and for each failing test what it expected, what happened, and how each rule came out. Costs nothing and sees no data: lookups find the
• eval_write_rule ~546 tokens
  Check one write against a rule set, as the API would, and say whether it would be allowed, denied (403) or failed (400), which statement decided it, and (with trace) what every expression evaluated to. The write is shaped like a rule test case: action, identity, token, old, new, patch, merge, now. C
• get_api_endpoint ~245 tokens
  The full contract of one REST API endpoint: parameters, headers, request body, responses and examples, and the JavaScript SDK method that calls it. Find it by id (the docs page slug, e.g. "item-restore"), by method and path (templates or concrete paths both work: "/lists/my-list/items/abc"), or by a
• get_cli_command ~170 tokens
  The usage, arguments and options of a jsonpad command line tool (@basementuniverse/jsonpad-cli) command, and whether it works offline. Find it by name ("rules test", "jsonpad sync-schema --dry-run") or by what it does.
• get_plan_limits ~254 tokens
  The limits of each public plan (Free, Indie, Pro, Scale): requests per month and minute, the minimum gap between requests, storage, item size, versions kept, tokens, identities, realtime connections, webhooks and flows. null means unlimited. Sizes are in bytes, rateLimit in milliseconds, prices in G
• get_sdk_method ~190 tokens
  The signature, description and example of a method in the JavaScript SDK (@basementuniverse/jsonpad-sdk) or the realtime SDK, and the REST endpoint it calls. Find it by name ("restoreItem") or by what it does.
• list_api_endpoints ~124 tokens
  List the REST API endpoints an API token can use, as method, path and title. Get one in full with get_api_endpoint.
• list_docs ~126 tokens
  List the documentation pages by section, with a description of each: the table of contents.
• lookup_error ~146 tokens
  What a JSONPad API error code means, its HTTP status, and the guides that explain it. Give the numeric code (10013) or the name (QUOTA_EXCEEDED), as found in an error response's "code" and "name".
• read_doc ~252 tokens
  Read a documentation page as markdown, or one section of it. Give a page slug ("indexing"), a /docs path, a jsonpad.io URL (with or without .md, and with an optional #anchor), "sdk/jsonpad-sdk", "sdk/jsonpad-realtime-sdk", "cli/reference" or "cli/readme". Long pages are cut at a section boundary; re
• search_docs ~297 tokens
  Search the JSONPad documentation, the JavaScript SDK references and the command line tool reference. Returns the best-matching sections with a snippet and their jsonpad.io URL; read one with read_doc. Exact identifiers work well: error codes and names, headers, SDK methods, CLI commands, $jsonpad-va
• validate_sync_document ~284 tokens
  Check a schema sync document (sync-v1) as far as possible without an account: against the JSON schema the API uses, the API's rules for keys and indexes, and every rule set and flow in it with their tests. Documents that reference files (rulesFile, flowFile and their tests) are checked too if the fi
• validate_token_permissions ~212 tokens
  Check an API token's permission rules against the schema the API uses, say which rule shape a broken one was meant to be, and warn about valid rules that probably don't do what was meant (rule order, restore without view, sync-schema alone, allow "*").

Browse

• Converting to Markdown
• APIs and testing

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