Candor vs Fhirhydrant

A side-by-side look at the Candor and Fhirhydrant MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Candor logoCandorBiology & Bioinformatics · Local subprocess (stdio)Per-function effect analysis for agents: blast radius, what reaches the network, gate verdicts.45FairAuth: not declaredFhirhydrant logoFhirhydrantBiology & Bioinformatics · Local subprocess (stdio)FHIR MCP server with SMART Backend Services, response compaction, FHIRPath, and guarded writes.55GoodAuth: not declared

Verdict: choose Candor for biology & bioinformatics work as a local process; choose Fhirhydrant for biology & bioinformatics as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Candor logoChoose Candor when

  • You need dedicated capabilities in the Biology & Bioinformatics domain.
  • You prefer a local stdio subprocess transport.
Explore Candor

Fhirhydrant logoChoose Fhirhydrant when

  • You need dedicated capabilities in the Biology & Bioinformatics domain.
  • You prefer a local stdio subprocess transport.
  • You want tools like terminology_lookup, code_search.
Explore Fhirhydrant

Feature & specification comparison

Rows where the two servers differ are marked.

SpecCandor logoCandorFhirhydrant logoFhirhydrant
CategoryBiology & BioinformaticsBiology & Bioinformatics
Quality signal45/100 · Fair55/100 · Good
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredNot declared
PricingNot declaredNot declared
Required env varsNone listedNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars118
Directory activity 2 views 0 installs 0 upvotes 1 views 0 installs 0 upvotes
ToolsNot listed2

Tools & capabilities

Candor tools

No tool names declared yet. Check the project README from the listing page.

Fhirhydrant tools 2

  • terminology_lookupLooks up one LOINC or SNOMED CT code
  • code_searchSearches codes by text filter with paging support

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Candor

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "candor": {
      "command": "npx",
      "args": [
        "-y",
        "candor-ts"
      ]
    }
  }
}

Fhirhydrant

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "fhirhydrant": {
      "command": "npx",
      "args": [
        "-y",
        "fhirhydrant"
      ]
    }
  }
}

Frequently asked questions

Candor is categorized under Biology & Bioinformatics and uses a local stdio subprocess. Fhirhydrant belongs to Biology & Bioinformatics and uses a local stdio subprocess. Pick Candor for biology & bioinformatics work and Fhirhydrant for biology & bioinformatics.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

Candor has no declared pricing — check the project's own site. Fhirhydrant has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add candor and fhirhydrant as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Candor has a quality signal of 45/100 (Fair) with 2 views, 0 installs and 1 GitHub stars. Fhirhydrant has 55/100 (Good) with 1 views, 0 installs and 18 GitHub stars.