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FlowMCP v4

Scope Whitelist + Public-only Principle

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Conformance language (MUST/SHOULD/MAY) follows BCP 14 [RFC2119]/[RFC8174] as defined in 00-overview.md. The binding source is the FlowMCP Schemas Specification v4.2.0.

Scope

Section titled “Scope”

Scope Whitelist

Section titled “Scope Whitelist”

This spec defines explicitly which FlowMCP constructs are covered by the grading system. The about markdown resource and Skills now have a clear grading methodology and are in-scope (graded by their dedicated areas). All other Resources, Prompts, and Procedures remain FlowMCP constructs without a clear grading methodology — they lie outside the current scope.

ElementStatusRationale
ToolsIn-Scope (primary)Most measurable unit
Shared ListsIn-Scope (secondary)Best available
about markdown resourceIn-ScopeThe single gradable resource — carries the Domain-Knowledge; graded by the about-namespace and about-selection areas
Skills (type namespace / selection / agent)In-ScopeGraded per-skill by the namespace-skills and selection-skills-L1/L2/L3 areas
Resources other than about (local files)Out-of-Scope (on-hold)Not reproducible
Resources (local SQLite)Out-of-Scope (on-hold)Private DB
Resources (SQL in general)Out-of-Scope (on-hold)Connection complexity
PromptsOut-of-Scope (on-hold)Unclear how to test
ProceduresOut-of-Scope (on-hold)Unclear how to test

Nine entries in total. The about markdown resource and Skills are in-scope; all other Resources, Prompts, and Procedures remain on-hold. Adding a new element to the whitelist is a gradingSpec bump.

Public-only Principle

Section titled “Public-only Principle”

The FlowMCP grading system is designed exclusively for publicly accessible data sources. Schemas that address private or non-publicly reachable resources lie outside the standardisation scope. Responsibility for grading such schemas rests with the schema author and the end user.

This principle is the consequence of 02-eligibility.md (target audience — public interfaces) and the data-source access-class taxonomy. It prevents the grading system from taking responsibility for schemas whose data source belongs to another party (internal API, private SQLite, non-public SQL) outside the reach of the standardisation process.

Consequences

Section titled “Consequences”
  • Provider areas are tool-centric (matches the whitelist) — the single-test, tools-aggregate-schema, and tools-aggregate-namespace areas evaluate tool aspects (see 08-grading-model.md)
  • Tool-aspect checks match the whitelist — the provider-side tool areas are tool-centric and fit the whitelist
  • Existing non-tool code that is not about or a Skill is marked on-hold — code audit
  • The n/a convention (see 08-grading-model.md) is the standard answer for out-of-scope fields of an otherwise valid schema (e.g. a schema has tools + resources — tools are graded, resources n/a)

Relationship to Exclusion Criteria and Access Classes

Section titled “Relationship to Exclusion Criteria and Access Classes”

The exclusion criteria and access classes in 02-eligibility.md govern what is permitted within a schema (read-only, OAuth prohibition, free-tier requirement). Scope governs what at all is graded:

  • Exclusion criteria / access classes: microscope (which endpoints may be inside?)
  • Scope: telescope (which FlowMCP constructs are covered at all?)

The two complement each other. A schema can satisfy the exclusion criteria and access classes perfectly and still contain out-of-scope constructs (e.g. Procedures) — the Procedures then receive n/a, the tools are graded in full.

Cross-Refs

Section titled “Cross-Refs”
Section titled “Related”