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SpecProof MCP Server

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answering

SpecProof is answering right now. Last checked 8 min ago. It exposes 17 tools.

SpecProof: Search standards specs with MCP-ready precision.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 47 days of history · worst day 98%
47 days agonow
98.9%
Uptime 24h
90 of 91 checks
17
Tools
read from the server
549 ms
Response time
average over 24h
open, no key
Access
streamable-http

SpecProof missed 2 checks this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add specproof-mcp --transport http https://mcp.specproof.ai/
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "specproof-mcp": {
      "url": "https://mcp.specproof.ai/"
    }
  }
}
~/.codex/config.toml
[mcp_servers.specproof-mcp]
url = "https://mcp.specproof.ai/"
.cursor/mcp.json
{
  "mcpServers": {
    "specproof-mcp": {
      "url": "https://mcp.specproof.ai/"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "specproof-mcp": {
      "url": "https://mcp.specproof.ai/"
    }
  }
}

Available tools 17

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

spec
get_spec_dependents
Get all specifications that reference a given spec (reverse lookup). Args: spec_number: Specification number to find dependents of max_results: Maximum results (default: 50)
get_spec_metadata
Get enriched metadata for specifications with filtering. Args: spec_number: Filter by spec number (partial match) series: Filter by series (e.g., "26" for 26.xxx codecs) working_group: Filter by working group (e.g., "SA4") doc_class: Filter by document class - "TS" or "TR" limit: Maximum results (default: 50)
get_spec_references
Get all specifications referenced by a given spec. Args: spec_number: Specification number (e.g., "23.501", "26.230") reference_type: Filter by type - "normative", "informative", "inline" (optional)
build
build_cross_spec_suite
Assemble the normative requirements for one procedure across a spec AND the specs it normatively references — a procedure like registration or handover is never described in a single document. Returns a cited suite plan; feed the requirement_ids to generate_tests. Args: spec_base: The anchor spec, e.g. "23502" or "38331" keyword: The procedure/topic, e.g. "registration", "handover", "authentication" include_references: Also pull matching clauses from specs this one references (default: True) limit: Max requirements in the plan (default: 20, max: 50)
database
get_database_stats
Get comprehensive database and system statistics.
diff
diff_spec_versions
Diff two versions of a specification at the NORMATIVE level: which requirements were added, removed, or reworded. Not a textual diff — a clause that merely moved page or was recased counts as unchanged. Args: spec_base: Spec identity without the version, e.g. "38331" or "23501" from_version: Older version label, e.g. "j20" (default: the second-newest in the corpus) to_version: Newer version label, e.g. "j30" (default: the newest in the corpus) obligation: Only report changes at this strength — "must", "must_not", "should", "should_not", "may" limit: Max requirements to list per bucket (default: 25)
document
get_document_content
Get specific content from a specification document. Args: filename: Document filename (required) page_range: Page range like "10-15" or single page "20" (optional) section: Section title filter (optional)
documents
list_documents
List available specification documents. Args: doc_type: Filter by document type - "3gpp", "ietf", or "mpeg" (optional) search_pattern: Search pattern for spec number or title (optional) limit: Maximum number of results (default: 20, max: 100)
generate
generate_tests
Generate a cited, runnable conformance test that verifies one normative requirement. The test is grounded in the requirement sentence plus its surrounding clause from the corpus, and every test cites the spec, section and page it enforces. If the requirement is not testable (boilerplate, scope text), the generator abstains rather than inventing a test. Args: requirement_id: The requirement's id, as shown by get_requirements target: "pytest" for a runnable Python test module, or "gherkin" for a reviewable .feature file (default: pytest)
most
get_most_referenced_specs
Get the most referenced (most important) specifications ranked by incoming reference count. Args: doc_type: Filter by "3gpp" or "ietf" series: Filter by series number limit: Maximum results (default: 20)
relationship
get_relationship_graph
Get a relationship graph centered on a specification, expanding N hops. Returns JSON with nodes and edges suitable for graph visualization. Each node includes title, series, working group, and reference counts. Each edge includes source, target, reference type, and count. Args: spec_number: Center specification number depth: Number of hops to expand (1-3, default: 1) reference_type: Filter by type - "normative", "informative" (optional)
requirements
get_requirements
List normative requirements (RFC 2119 / BCP 14 "shall/should/may" statements) extracted from specifications, each cited back to its source clause. Args: spec_number: Filter by spec number, e.g. "23.501" or "RFC 9110" (optional) obligation: Filter by strength - "must", "must_not", "should", "should_not", or "may" (optional) search: Keyword to search within the requirement text (optional) limit: Maximum number of requirements to return (default: 30, max: 100)
rfc
get_rfc_lineage
An RFC's revision history. RFCs are immutable — an RFC is never revised, it is obsoleted or updated by a *different* RFC — so this Obsoletes/Updates graph, not a version diff, IS its change history. Use it to find out whether an RFC you depend on has been superseded. Args: rfc: The RFC, e.g. "7231", "rfc7231" or "RFC 7231"
schema
get_schema_definitions
Look up formal, machine-checkable structure defined in the specifications: ASN.1 types (3GPP RRC/NAS message grammars) and JSON Schema / OpenAPI models (5G Service Based Interfaces). Prefer this over prose search when the question is about a message's *structure* — field names, types, ranges, optionality. The definition is returned verbatim from the spec, so it is exact rather than recalled. Args: name: Type or schema name, e.g. "RRCSetup", "MeasConfig", "SmContextCreateData" spec_number: Restrict to a spec, e.g. "38.331" kind: "asn1", "openapi" or "json_schema" limit: Maximum definitions to return (default: 10, max: 25)
semantic
semantic_search
Perform semantic search using vector embeddings with FAISS acceleration. Args: query: Natural language search query (required) max_results: Maximum number of results to return (default: 5, max: 20) similarity_threshold: Minimum similarity threshold 0.0-1.0 (default: 0.3) index_type: FAISS index type - "hnsw", "ivf", or "flat" (optional, auto-selected)
series
get_series_overview
Get an overview of all specification series with document counts, reference statistics, and working group assignments.
specifications
search_specifications
Search across 3GPP, IETF, and Multimedia specification documents using full-text search. Args: query: Search query terms (required) doc_type: Filter by document type - "3gpp", "ietf", or "mpeg" (optional) spec_number: Filter by specification number (optional) max_results: Maximum number of results to return (default: 10, max: 50)

Endpoints

URLTransportStateLatencyChecked
https://mcp.specproof.ai/ streamable-http answering 487 ms 8 min ago

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SpecProof — questions

Answers built from our own checks of this server.

What can SpecProof do?
It exposes 17 tools, read directly from the server on our last check. Among them: build_cross_spec_suite, diff_spec_versions, generate_tests, get_database_stats, get_document_content, get_most_referenced_specs and 11 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is SpecProof working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 549 ms. The bar chart above shows every period we have measured.
Is SpecProof still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
How do I connect SpecProof?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does SpecProof need an API key?
No. SpecProof completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 17 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is SpecProof?
It answers our handshake in 549 ms on average, which is faster than 25% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.