# Tabularium (remote · tabularium.matt-3e0.workers.dev)

Agent memory and a signed spending ledger: pay any x402 API, keep a provable receipt.

- Trust score: 58/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `tabularium.matt-3e0.workers.dev`: 58/100 (this document), [markdown](https://verifymcp.io/servers/sqlazy-tabularium/tabularium.md), [page](https://verifymcp.io/servers/sqlazy-tabularium/tabularium)
- npm · `tabularium-mcp`: 86/100, [markdown](https://verifymcp.io/servers/sqlazy-tabularium/tabularium-mcp.md), [page](https://verifymcp.io/servers/sqlazy-tabularium/tabularium-mcp)

## Channel facts

- Endpoint: `https://tabularium.matt-3e0.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.5.5`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 870 tokens (~124/item across 7 items; 7 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 96/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 88% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Tabularium MCP server?

Tabularium is a hosted endpoint at https://tabularium.matt-3e0.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http sqlazy-tabularium 'https://tabularium.matt-3e0.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "sqlazy-tabularium": {
      "url": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "sqlazy-tabularium": {
      "type": "http",
      "url": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.sqlazy-tabularium]
url = "https://tabularium.matt-3e0.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sqlazy-tabularium": {
      "type": "remote",
      "url": "https://tabularium.matt-3e0.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add sqlazy-tabularium --url 'https://tabularium.matt-3e0.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  sqlazy-tabularium:
    url: "https://tabularium.matt-3e0.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "sqlazy-tabularium": {
      "Transport": "http",
      "Url": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add sqlazy-tabularium -t streamable-http -u 'https://tabularium.matt-3e0.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "sqlazy-tabularium": {
      "type": "http",
      "url": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 58, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 57, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-11-02 (score 56)

First indexed and scored.

## MCP tools (7)

### `tabularium_menu` (~36 tokens)

Tabularium: menu

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

### `tabularium_head` (~40 tokens)

Tabularium: /head

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

Input parameters:

- `wallet` (string, required)

### `tabularium_write` (~190 tokens)

Tabularium: write

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"].

Input parameters:

- `idempotency_key` (string): Optional retry id, kept 7 days
- `key` (string, required): Key, e.g. notes/today
- `value` (string, required): UTF-8 string; store JSON as a string

### `tabularium_read` (~130 tokens)

Tabularium: read

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"].

Input parameters:

- `key` (string, required): Key, e.g. notes/today

### `tabularium_renew` (~120 tokens)

Tabularium: renew

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"].

### `tabularium_export` (~137 tokens)

Tabularium: export

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"].

Input parameters:

- `since` (integer): Only entries after this seq

### `tabularium_snapshot_fetch` (~165 tokens)

Tabularium Snapshot: fetch

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"].

Input parameters:

- `max_chars` (integer): Most characters of text to return (default 50000); the signature covers exactly what is returned
- `url` (string, required): Public http(s) page to fetch

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/sqlazy-tabularium/tabularium#diagnostics

## Score history

- 2026-11-05: 58
- 2026-11-04: 57
- 2026-11-03: 57
- 2026-11-02: 56

## Common questions

### What is the Tabularium MCP server?

Tabularium is an MCP server listed in the public MCP registry as io.github.SQLazy/tabularium. Agent memory and a signed spending ledger: pay any x402 API, keep a provable receipt. This page covers its hosted endpoint (https://tabularium.matt-3e0.workers.dev/mcp).

### Is the Tabularium MCP server safe to use?

Tabularium scores 58 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Tabularium MCP server expose?

Tabularium exposes 7 tools: tabularium_menu, tabularium_head, tabularium_write, tabularium_read, tabularium_renew, and 2 more. Their descriptions and schemas cost roughly 818 tokens of context every time the server is loaded.

### Does the Tabularium MCP server require authentication?

No. We connected to Tabularium without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Tabularium MCP server still maintained?

Tabularium is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://tabularium.matt-3e0.workers.dev/mcp
- Repository: https://github.com/SQLazy/tabularium
- Website: https://github.com/SQLazy/tabularium/tree/main/mcp#readme
- Changelog RSS feed: https://verifymcp.io/servers/sqlazy-tabularium/tabularium.xml
- Changelog JSON feed: https://verifymcp.io/servers/sqlazy-tabularium/tabularium.json
- HTML version of this page: https://verifymcp.io/servers/sqlazy-tabularium/tabularium