Silvertongue MCP (remote)

65/100

Capped at 65: vendor-hosted, source not published. The tests add up to 90.

Last tested 2026-11-12 (Fresh: tested within 30 days) Working (tool call tested 2026-11-12) No key needed for the tools we called

Advisories: not yet checked

Security review: not tested

Test points add up to 90; the score is capped at 65 (vendor-hosted, source not published). Not a quality or security rating. Capped listings are not promoted in our rankings or on the homepage. Why scores are capped

Test points before the cap (90/100)

  • Install20/20
  • Handshake30/30
  • Maintenance25/25
  • Docs5/15
  • License10/10

New / early find
New / early find: first tested 2026-11-12. Silvertongue's hosted MCP at https://mcp.silvertongue.dev/mcp (server silvertongue 0.1.5): a catalogue of famous writing voices (researched style profiles, CC BY 4.0) your own model writes in. Repo auscaster/silvertongue (Apache-2.0, 115 GitHub stars when tested, created 2026-10-29; not on Glama or mcp.so when checked, PulseMCP blocked our check). The repo holds the catalogue, GitHub Action and plugins but not the MCP server source, so the 65 cap applies (not source-audited). Initialize and tools/list over Streamable HTTP worked with no credentials (4 tools, all annotated read-only). Real calls: search_voices {query:'Marcus Aurelius'} found 1 voice, get_voice returned the profile, get_voice_packet {format:'post'} returned the writing packet, get_changes returned the catalogue list.
Tool-call test (2026-11-12, direct MCP stdio client, no LLM): pass. 4 of 4 read calls passed anonymously. Evidence: live endpoint probe, Nov 12, 2026.

Transport (tested 2026-11-12): Streamable HTTP

Token cost (estimate): approx. 1051 tokens, cl100k estimate (4 tools, measured 2026-11-12). This is an estimate from our testing of the tool names, descriptions and input schemas, counted with cl100k_base.

Permissions: 4 read, 0 write (state-changing), 0 unclassified · Auth: none · Rate limit: unknown · Pricing unit: unknown

Auth: none. Rate limit: unknown. Pricing unit: unknown.

  • get_changes — read
  • get_voice — read
  • get_voice_packet — read
  • search_voices — read

remote handshake listed tools without credentials; no recorded key or OAuth

Score 65/100 · Tools 4 · Token cost approx. 1,051 tokens · Compare · Last tested 2026-11-12 · Server version 0.1.5 · Remote endpoint https://mcp.silvertongue.dev/mcp (streamable-http) · Repo auscaster/silvertongue

Summary: Silvertongue MCP (remote) completed an MCP handshake without credentials and exposed 4 tools.

Evidence summary

Handshake
pass
Tools listed
4
Context cost
approx. 1051 tokens, cl100k estimate (4 tools, measured 2026-11-12; an estimate) ranking · add up your servers' context cost
API key
No key needed for the tools we called
Tested
2026-11-12

Test results

TestResultPointsEvidence
installpass20Endpoint https://mcp.silvertongue.dev/mcp reachable over streamable-http (HTTP 200) in 0.3s; no install step for remote servers.
handshakepass30MCP initialize (protocol 2025-06-18, server silvertongue 0.1.5) + tools/list over streamable-http succeeded with no credentials; 4 tools listed in 0.3s. Tool calls may still need a key.
maintenancepass25Repo pushed 0 days before test; 115 GitHub stars.
docspartial5README over 3,000 chars. Check of the package's own README (project repo README (github.com/auscaster/silvertongue)).
licensepass10Apache-2.0 (OSI-approved).

Local-model readiness

Token cost (estimate): approx. 1051 tokens, cl100k estimate for 4 tools · about 13% of an 8k context. This is an estimate from our testing (counted with cl100k_base).

Small-model friendly (schema heuristic, not a model result): unknown.

Not tested

Small-model task runs: Not yet tested.

What we tested and what we didn't

Tested on 2026-11-12

  • Install from the registry (remote endpoint: connection only)
  • We connected with no credentials and asked for its tool list: it listed 4 tools (Method details: MCP initialize then tools/list)
  • Maintenance signals (last push, archived/deprecated status)
  • Docs (README length, install and config example)
  • License (OSI-approved or not)
  • Token cost (estimate)

Not tested

  • Security: not audited (no code review, no permission or data-flow analysis)
  • Real tasks (no functional task runs yet)
  • Behaviour with real credentials or a real account
  • Performance, rate limits or load
  • Correctness of results beyond the listed tasks

Methodology: how we test. A high score means it installs and responds, not that giving it access to your data carries no risk.

Known security issues

Not yet checked.

Monthly roundup: MCP security issues, October 2026.

Tool list changes

Baseline recorded from the 2026-11-12 test run; changes appear after the next test.

Snapshot hash (fingerprint of the tool list)

e5b1ffaae8fb: SHA-256 of the canonical tool names, descriptions and input schemas. If it changes, the tool list changed.

Feeds: RSS · JSON.

Raw test record (JSON)
{
  "name": "silvertongue-remote",
  "version": null,
  "registry": "remote",
  "status": "working",
  "tested": "2026-11-12",
  "tools_count": 4,
  "deprecated": false,
  "archived": false,
  "tests": {
    "install": [
      "pass",
      20,
      "Endpoint https://mcp.silvertongue.dev/mcp reachable over streamable-http (HTTP 200) in 0.3s; no install step for remote servers."
    ],
    "handshake": [
      "pass",
      30,
      "MCP `initialize` (protocol 2025-06-18, server silvertongue 0.1.5) + `tools/list` over streamable-http succeeded with no credentials; 4 tools listed in 0.3s. Tool calls may still need a key."
    ],
    "maintenance": [
      "pass",
      25,
      "Repo pushed 0 days before test; 115 GitHub stars."
    ],
    "docs": [
      "partial",
      5,
      "README over 3,000 chars. Check of the package's own README (project repo README (github.com/auscaster/silvertongue))."
    ],
    "license": [
      "pass",
      10,
      "Apache-2.0 (OSI-approved)."
    ]
  }
}

Install

https://mcp.silvertongue.dev/mcp

Tools listed

get_changes, get_voice, get_voice_packet, search_voices

Tool history: captured Nov 13, 2026. All tool history.

Quick config

{
  "mcpServers": {
    "silvertongue-mcp-remote": {
      "type": "http",
      "url": "https://mcp.silvertongue.dev/mcp"
    }
  }
}

Add to config Opens the config generator with this server selected.

Setup

  1. Install. No install step: it is a remote server at https://mcp.silvertongue.dev/mcp.
  2. Configure. Add the mcpServers entry below to your MCP client config.
  3. Verify. Restart the client and check that tools/list returns tools (4 in our test).
{
  "mcpServers": {
    "silvertongue-mcp-remote": {
      "type": "http",
      "url": "https://mcp.silvertongue.dev/mcp"
    }
  }
}

Test history

Follow this server (RSS) · Monthly changelog

FAQ

Is Silvertongue MCP deprecated?

No. silvertongue-remote was not deprecated or archived when we last tested it on 2026-11-12.

What replaces Silvertongue MCP?

Nothing; Silvertongue MCP (remote) is not deprecated as of 2026-11-12.

Does Silvertongue MCP need an API key?

No. It completed an MCP handshake with no credentials and listed 4 tools.

Embed the badge

TestedMCP: 65/100, tested 2026-11-12

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