Tabularium MCP

Free. Prices, payee, network, policy (term, grace, size limits) and the signing key for every call.

{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": false
}

Free. Free: signed head (seq + hash, no values), state and expiry for a wallet's workspace

{
  "type": "object",
  "required": [
    "wallet"
  ],
  "properties": {
    "wallet": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$"
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": false
}

Paid ($0.003 USDC on Base, x402). Append a value under a key in the paying wallet's workspace. Agent memory: save a value under a key in a persistent key-value store owned by the paying wallet. The first write opens a 30-day workspace. Memory survives restarts, new machines and hand-offs between agents. Every write is hash-chained and signed (Ed25519), so the history verifies offline. Values up to 64 KB; failed writes are not charged.. Charged only if it succeeds. Call once without payment to get the price, then retry with params._meta["x402/payment"].

{
  "type": "object",
  "required": [
    "key",
    "value"
  ],
  "properties": {
    "key": {
      "type": "string",
      "pattern": "^[A-Za-z0-9._:\\/-]{1,128}$",
      "description": "Key, e.g. notes/today"
    },
    "value": {
      "type": "string",
      "maxLength": 65536,
      "description": "UTF-8 string; store JSON as a string"
    },
    "idempotency_key": {
      "type": "string",
      "pattern": "^[A-Za-z0-9._:-]{1,128}$",
      "description": "Optional retry id, kept 7 days"
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": false,
  "openWorldHint": true
}

Paid ($0.002 USDC on Base, x402). Latest value for a key, with its chain entry. Agent memory: read the latest value for a key from the paying wallet's persistent key-value store, with its signed hash-chain entry. Reads keep working through the 90-day grace period after the term ends. A missing key returns 404 and is not charged.. Charged only if it succeeds. Call once without payment to get the price, then retry with params._meta["x402/payment"].

{
  "type": "object",
  "required": [
    "key"
  ],
  "properties": {
    "key": {
      "type": "string",
      "pattern": "^[A-Za-z0-9._:\\/-]{1,128}$",
      "description": "Key, e.g. notes/today"
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true
}

Paid ($0.25 USDC on Base, x402). Extend the workspace by 30 days from the later of now or its expiry. Agent memory: keep the paying wallet's persistent key-value store for 30 more days, counted from the later of now or its current expiry. A free pre-check rejects a wallet with no workspace before any charge.. Settles before it runs (a free check refuses a call that would fail). Call once without payment to get the price, then retry with params._meta["x402/payment"].

{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}

{
  "readOnlyHint": false,
  "openWorldHint": true
}

Paid ($0.01 USDC on Base, x402). Full signed history and current values, verifiable offline. Agent memory: export the full signed history and current values of the paying wallet's persistent key-value store, for backup or proof. The export verifies offline against the public key in /menu, with no trust in the server. The optional since parameter returns only newer entries.. Settles before it runs (a free check refuses a call that would fail). Call once without payment to get the price, then retry with params._meta["x402/payment"].

{
  "type": "object",
  "properties": {
    "since": {
      "type": "integer",
      "minimum": 0,
      "description": "Only entries after this seq"
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": true,
  "openWorldHint": true
}

Paid ($0.005 USDC on Base, x402). Fetch a web page as text, with a signed record of what was served and when. Returns the page's readable text plus an Ed25519-signed record (final URL after redirects, fetch time, status, sha256 of the body and of the text) that verifies offline. Charged only for 2xx text pages; refused URLs cost nothing.. Charged only if it succeeds. Call once without payment to get the price, then retry with params._meta["x402/payment"].

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "pattern": "^https?://",
      "maxLength": 2048,
      "description": "Public http(s) page to fetch"
    },
    "max_chars": {
      "type": "integer",
      "maximum": 200000,
      "minimum": 1000,
      "description": "Most characters of text to return (default 50000); the signature covers exactly what is returned"
    }
  },
  "additionalProperties": false
}

{
  "readOnlyHint": false,
  "openWorldHint": true
}