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Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

Priority — TypeScript Compiler Intelligence

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dev.semanticreader/semantic-reader

semanticreader.devVerified

Stateless TS/JS compiler facts for agents: references, imports, impact. No repo index or OAuth.

AI models & agentsSecurity & identity

Developer ToolsIs Priority — TypeScript Compiler Intelligence down?Alternatives

12 of 22 checks passed

  • Handshake
  • Tools listed
  • Updated recently

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Connect to server
Median latency
112 ms
Uptime, 30 days
Not measured
Last checked

Measurement details

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 112 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name semantic-reader.

  • Pass
    Lists tools

    tools/list returned 12 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 112 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 112 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    0 of 102 parameters have a description (0%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-09-14T15:24:25.761276Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Tools

  • analyze_impact

    Return bounded reverse-caller impact for one exact compiler symbol.

    Measured

  • find_references

    Return semantic static references to one exact compiler symbol.

    Measured

  • find_symbol

    Resolve a symbol name to deterministic ranked compiler symbol candidates; safely reports ambiguity.

    Measured

  • get_capabilities

    Return Semantic Reader capabilities, limits, billing and discovery facts.

    Measured

  • get_definition

    Return the compiler-resolved declaration for one supplied-file symbol.

    Measured

  • get_diagnostics

    Return bounded TypeScript syntactic and semantic diagnostics for supplied files.

    Measured

  • get_importers

    Return supplied files that statically import one target file.

    Measured

  • get_imports

    Return static imports made by one supplied file.

    Measured

  • get_symbol_context

    Return bounded definition/callers/callees context; references or impact request paid depth.

    Measured

  • get_type

    Return TypeScript type facts and call/construct signatures for one declaration.

    Measured

  • open_snapshot

    Store supplied source files ephemerally and return an opaque snapshot handle for reuse.

    Measured

  • query_code

    Free navigation for symbols, callers, callees or function facts.

    Measured

Probe history

  • ok112 ms12 tools

Status and uptime

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The image links back to this page. It shows checks passed, or uptime, and the colour follows the latest status. Responses are cached for 5 to 15 minutes.

MCP Heartbeat badge

Markdown

[![MCP Heartbeat](https://mcpheartbeat.com/badge/dev.semanticreader/semantic-reader.svg)](https://mcpheartbeat.com/s/dev.semanticreader/semantic-reader)

HTML

<a href="https://mcpheartbeat.com/s/dev.semanticreader/semantic-reader"><img alt="MCP Heartbeat" src="https://mcpheartbeat.com/badge/dev.semanticreader/semantic-reader.svg"></a>

Uptime markdown

[![MCP Heartbeat uptime](https://mcpheartbeat.com/badge/dev.semanticreader/semantic-reader.svg?kind=uptime)](https://mcpheartbeat.com/s/dev.semanticreader/semantic-reader)

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Connect to this server

Claude Code

claude mcp add --transport http priority-typescript-compiler-intelligence https://semanticreader.dev/mcp/registry

Cursor .cursor/mcp.json

{
  "mcpServers": {
    "priority-typescript-compiler-intelligence": {
      "url": "https://semanticreader.dev/mcp/registry"
    }
  }
}

VS Code .vscode/mcp.json

{
  "servers": {
    "priority-typescript-compiler-intelligence": {
      "type": "http",
      "url": "https://semanticreader.dev/mcp/registry"
    }
  }
}