CRREM MCP Server
Provides CRREM v2.05 carbon pathway data for real estate decarbonization analysis, including carbon/energy targets, emission factors, climate zones, and stranding risk calculations.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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soapboxbuild
Source: Glama
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The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
get_pathwayCarbon and energy pathway targets for a country/property type from CRREM v2.05
get_emission_factorsGrid emission factors (kgCO2/kWh) for a country. CRREM v2.05 contains electricity factors only.
get_climate_zoneLook up climate zone for a postal code. Supported: US (full ZIP), CA (first letter of FSA), AU (numeric prefix).
calculate_stranding_riskCalculate CRREM stranding risk: compares a building's carbon intensity against the pathway target and finds the stranding year.
list_countriesList all countries with CRREM v2.05 pathway data available
list_property_typesList available CRREM property types for a given country
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
@hono/node-server has authorization bypass for protected static paths via encoded slashes in Serve Static Middleware
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
Hono JWK Auth Middleware has JWT algorithm confusion when JWK lacks "alg" (untrusted header.alg fallback)
PORTTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
6/6 tools missing one or more hints — get_pathway (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_emission_factors (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_climate_zone (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +3 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
5/6 tool handlers declare input schemas (83%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 0/6 tool handlers wrap calls in try/catch (0%)
Wrap each tool handler body in try/catch and return a structured error response.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tests exist
No test files found
Add tests that exercise each declared tool.
Production dependencies are patched
0 critical, 8 high severity in production deps — @hono/node-server@1.13.7 (high), @modelcontextprotocol/sdk@1.12.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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