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Tabularium

R0· no sign-in

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

v0.5.5 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality81good
Trust96of 100
Uptime, 30 days90%
Latency p50190 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "tabularium": {
      "type": "http",
      "url": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  }
}
claude mcp add --transport http tabularium https://tabularium.matt-3e0.workers.dev/mcp
[mcp_servers.tabularium]
url = "https://tabularium.matt-3e0.workers.dev/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "tabularium": {
      "type": "remote",
      "url": "https://tabularium.matt-3e0.workers.dev/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "tabularium": {
      "type": "http",
      "url": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=tabularium&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vdGFidWxhcml1bS5tYXR0LTNlMC53b3JrZXJzLmRldi9tY3AifQ%3D%3D"
}
{
  "servers": {
    "tabularium": {
      "type": "http",
      "url": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  }
}
{
  "mcpServers": {
    "tabularium": {
      "httpUrl": "https://tabularium.matt-3e0.workers.dev/mcp"
    }
  }
}
extensions:
  "tabularium":
    enabled: true
    name: "tabularium"
    type: streamable_http
    uri: "https://tabularium.matt-3e0.workers.dev/mcp"
    timeout: 300

Quality 81 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene86 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations7 of 7 tools declare readOnlyHint or destructiveHint
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: tabularium_write (destructiveHint, idempotentHint); tabularium_read (destructiveHint, idempotentHint); tabularium_renew (destructiveHint, idempotentHint); …
  • pass
    tools.token_costabout 1,111 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stabilityn/a · weight 15
  • n/a
    stability.changes, stability.rug_pulltool history recorded for 5 of the 7 days needed
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know [email protected]

7 tools, about 1,111 tokens to load them all · tool set b3ea7e9b2d9c · checked 2026-11-07 19:10 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 96 / 100

provenance90
liveness96
freshness100
hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-90% +updated-5d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://tabularium.matt-3e0.workers.dev/mcp streamable-httpnoneyes90%190 ms2025-06-182026-11-07
packageregistryversionruntimesecrets
tabularium-mcpnpm0.5.5–TABULARIUM_PRIVATE_KEY

Tools (7)

tabularium_exportread-onlyPaid ($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"].
tabularium_headread-onlyFree. Free: signed head (seq + hash, no values), state and expiry for a wallet's workspace
tabularium_menuread-onlyFree. Prices, payee, network, policy (term, grace, size limits) and the signing key for every call.
tabularium_readread-onlyPaid ($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"].
tabularium_renewPaid ($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_snapshot_fetchPaid ($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"].
tabularium_writePaid ($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"].

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "io.github.SQLazy/tabularium",
  "title": "Tabularium",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://tabularium.matt-3e0.workers.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.5.5",
  "packages": [
    {
      "version": "0.5.5",
      "transport": {
        "type": "stdio"
      },
      "identifier": "tabularium-mcp",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "TABULARIUM_PRIVATE_KEY",
          "isSecret": true,
          "isRequired": true,
          "description": "0x-prefixed EVM private key of the wallet that pays (use a dedicated wallet with a small USDC balance)"
        },
        {
          "name": "TABULARIUM_MAX_SPEND_USD",
          "default": "1",
          "description": "Spend cap for this server process, in USD"
        },
        {
          "name": "TABULARIUM_URL",
          "description": "Service base URL (defaults to the public deployment)"
        },
        {
          "name": "TABULARIUM_PAY_MAX_USD",
          "default": "0.10",
          "description": "tabularium_pay: most one purchase may cost, in USD (ceiling 0.50)"
        },
        {
          "name": "TABULARIUM_PAY_NETWORKS",
          "description": "tabularium_pay: comma-separated networks it may pay on; default is the service's own network. eip155:8453 is mainnet (real money)."
        },
        {
          "name": "TABULARIUM_PUBKEY",
          "description": "Optional pinned Ed25519 signing key (hex) that exports must verify against"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/SQLazy/tabularium",
    "source": "github",
    "subfolder": "mcp"
  },
  "websiteUrl": "https://github.com/SQLazy/tabularium/tree/main/mcp#readme",
  "description": "Agent memory and a signed spending ledger: pay any x402 API, keep a provable receipt."
}