# generated: '2026-08-17'
# method: searched
# source: https://github.com/naftiko/ikanos/blob/main/modules/ikanos-spec/src/main/resources/rules/ikanos-rules.yml
# raw: https://raw.githubusercontent.com/naftiko/ikanos/main/modules/ikanos-spec/src/main/resources/rules/ikanos-rules.yml
# Verbatim first-party governance ruleset shipped inside Naftiko's Ikanos engine
# (module ikanos-spec, Apache 2.0). It is the default rule pack Polychro enforces
# against Ikanos capability YAML. 33 rules: 14 error, 16 warn, 3 info. Rule shape is
# Spectral-compatible (message/description/severity/given/then) with custom JS
# functions under ./functions. Nothing below was written by API Evangelist.
# yaml-language-server: $schema=ruleset-schema.json
# Ikanos Polychro Ruleset v0.6
#
# A Spectral ruleset adapted to the Ikanos Specification v0.6.
#
# IMPORTANT:
# - This ruleset intentionally avoids duplicating constraints already enforced
#   by src/main/resources/schemas/ikanos-schema.json.
# - It focuses on cross-object consistency, style hygiene, and security checks.
# - It supports full capabilities, shared section documents (root-level
#   `consumes`, `exposes`, `aggregates`, `binds`), and import directives.
#
# Usage:
#   npx @stoplight/spectral-cli lint my-capability.yml --ruleset ikanos-rules.yml
#
# Rules are organized into six categories:
#   1. Structure & consistency      — validate cross-object constraints not covered by schema
#   2. Quality & discoverability    — promote good description hygiene for agent discovery
#   3. Security                     — guard against injection and unsafe content
#   4. Control port                 — control adapter constraints
#   5. Script steps                 — script step defaults
#   6. Imports                      — unified import directive validation (§11 of blueprint)

extends: []

functionsDir: ./functions

functions:
  - unique-namespaces
  - aggregate-semantics-consistency
  - aggregate-function-unique
  - control-port-validation
  - script-defaults-required
  - standalone-no-imports
  - import-alias-unique
  - tunnel-identity-binds-ref

rules:

  # ────────────────────────────────────────────────────────────────
  # 1. STRUCTURE & CONSISTENCY
  # ────────────────────────────────────────────────────────────────

  ikanos-namespaces-unique:
    message: "Namespaces must be globally unique across all adapters and bindings."
    description: >
      The same namespace must not be reused across root `consumes`,
      `capability.consumes`, `capability.exposes`, root `binds`,
      and `capability.binds`.
      This prevents ambiguous routing, reference resolution, and
      variable resolution.
    severity: error
    recommended: true
    given: "$"
    then:
      function: unique-namespaces

  ikanos-consumes-baseuri-no-trailing-slash:
    message: "The `consumes.baseUri` should not have a trailing slash."
    description: >
      A trailing slash on the baseUri can cause double-slash issues when the
      resource path is appended (e.g. https://api.example.com//users).
    severity: warn
    recommended: true
    given:
      - "$.consumes[*].baseUri"
      - "$.capability.consumes[*].baseUri"
    then:
      function: pattern
      functionOptions:
        notMatch: "/$"

  ikanos-consumed-resource-no-query-in-path:
    message: "Consumed resource `path` must not contain a query string. Use `inputParameters` with `in: query` instead."
    description: >
      Query parameters belong in the inputParameters array with in: query,
      not in the path string.
    severity: warn
    recommended: true
    given:
      - "$.consumes[?(@.type == 'http')].resources[*].path"
      - "$.capability.consumes[?(@.type == 'http')].resources[*].path"
    then:
      function: pattern
      functionOptions:
        notMatch: "\\?"

  ikanos-rest-resource-path-no-trailing-slash:
    message: "Exposed resource `path` must not have a trailing slash."
    description: >
      Trailing slashes on resource paths can cause confusion in routing,
      documentation, and client code generation.
    severity: warn
    recommended: true
    given: "$.capability.exposes[?(@.type == 'rest')].resources[*].path"
    then:
      function: pattern
      functionOptions:
        notMatch: "/$"

  ikanos-rest-resource-path-no-query:
    message: "Exposed resource `path` must not contain a query string. Use `inputParameters` with `in: query` instead."
    severity: warn
    recommended: true
    given: "$.capability.exposes[?(@.type == 'rest')].resources[*].path"
    then:
      function: pattern
      functionOptions:
        notMatch: "\\?"

  ikanos-address-not-example:
    message: "Server `address`, when present, should not be example.com."
    description: >
      Placeholder hosts are discouraged in production-bound capability documents.
    severity: warn
    recommended: true
    given:
      - "$.capability.exposes[?(@.type == 'rest')].address"
      - "$.capability.exposes[?(@.type == 'mcp')].address"
      - "$.capability.exposes[?(@.type == 'skill')].address"
    then:
      function: pattern
      functionOptions:
        notMatch: "example\\.com$"

  ikanos-aggregate-flow-description:
    message: "Each aggregate flow should have a `description` field."
    description: >
      Flow descriptions are inherited by adapter units and improve agent
      discoverability.
    severity: warn
    recommended: true
    given: "$.capability.aggregates[*].flows[*]"
    then:
      field: "description"
      function: truthy

  ikanos-aggregate-semantics-consistency:
    message: "Aggregate flow semantics must be consistent with MCP tool hints and REST operation methods."
    description: >
      When an MCP tool or REST operation references an aggregate flow via `ref`,
      any explicit hints or HTTP methods should not contradict the flow's declared
      semantics. For example, a safe flow should not have destructive=true hints
      or use a POST/DELETE method.
    severity: warn
    recommended: true
    given: "$"
    then:
      function: aggregate-semantics-consistency

  ikanos-mcp-auth-stdio-conflict:
    message: "MCP `authentication` should not be set when `transport` is `stdio`."
    description: >
      Per MCP specification §1.2, stdio transport should not follow the HTTP
      authorization flow — credentials are retrieved from the environment instead.
      Authentication is only meaningful for the HTTP transport.
    severity: warn
    recommended: true
    given: "$.capability.exposes[?(@.type == 'mcp' && @.transport == 'stdio')]"
    then:
      field: "authentication"
      function: falsy

  ikanos-oauth2-https-authserver:
    message: "OAuth2 `authorizationServerUri` must use the `https://` scheme."
    description: >
      The OAuth 2.1 specification requires all authorization server endpoints to be
      served over HTTPS. A non-HTTPS authorization server URI is a security risk.
    severity: error
    recommended: true
    given: "$.capability.exposes[*].authentication[?(@.type == 'oauth2')]"
    then:
      field: "authorizationServerUri"
      function: pattern
      functionOptions:
        match: "^https://"

  ikanos-oauth2-resource-https:
    message: "OAuth2 `resource` should use the `https://` scheme for production."
    description: >
      The resource URI identifies this server in Protected Resource Metadata and
      audience validation. Using HTTPS ensures proper security in production.
    severity: warn
    recommended: true
    given: "$.capability.exposes[*].authentication[?(@.type == 'oauth2')]"
    then:
      field: "resource"
      function: pattern
      functionOptions:
        match: "^https://"

  ikanos-oauth2-scopes-defined:
    message: "OAuth2 authentication should define `scopes` for scope challenge support."
    description: >
      Defining scopes enables the server to include scope information in
      WWW-Authenticate challenges and Protected Resource Metadata, improving
      client interoperability.
    severity: warn
    recommended: true
    given: "$.capability.exposes[*].authentication[?(@.type == 'oauth2')]"
    then:
      field: "scopes"
      function: truthy

  # ────────────────────────────────────────────────────────────────
  # 2. QUALITY & DISCOVERABILITY
  # ────────────────────────────────────────────────────────────────

  ikanos-info-tags:
    message: "The `info.tags` array should be present and non-empty."
    description: >
      Tags help categorize the capability for discovery and filtering.
      At least one tag improves agent cataloging.
    severity: info
    recommended: false
    given: "$.info"
    then:
      field: "tags"
      function: truthy

  ikanos-consumes-description:
    message: "Each `consumes` entry should have a `description` field."
    description: >
      A description of the consumed API improves agent understanding of
      what external service is being used and why.
    severity: warn
    recommended: true
    given:
      - "$.consumes[*]"
      - "$.capability.consumes[*]"
    then:
      field: "description"
      function: truthy

  ikanos-rest-resource-description:
    message: "Each exposed REST resource should have a `description` field."
    description: >
      Resource descriptions are used by agents to understand the purpose of
      each endpoint. In a world of agents, context is king.
    severity: warn
    recommended: true
    given: "$.capability.exposes[?(@.type == 'rest')].resources[*]"
    then:
      field: "description"
      function: truthy

  ikanos-rest-operation-description:
    message: "Exposed REST operations should have a `description` field."
    description: >
      Analogous to operation-description in OAS. Descriptions help agents
      understand which operations to invoke and when.
    severity: info
    recommended: false
    given: "$.capability.exposes[?(@.type == 'rest')].resources[*].operations[*]"
    then:
      field: "description"
      function: truthy

  # ikanos-steps-name-pattern was removed: step names are now map keys in the
  # named-object format (alpha3+). The pattern ^[A-Za-z0-9_-]+$ is enforced
  # by the JSON Schema propertyNames/IdentifierKebab constraint on every steps
  # map, making this Polychro rule redundant.

  # ────────────────────────────────────────────────────────────────
  # 3. SECURITY
  # ────────────────────────────────────────────────────────────────

  ikanos-no-script-tags-in-markdown:
    message: "Markdown fields must not contain <script> tags."
    description: >
      Analogous to no-script-tags-in-markdown (OAS) and arazzo-no-script-tags-in-markdown.
      Protects against XSS attacks when capability documents from third parties
      are rendered in HTML documentation or agent UIs.
    severity: error
    recommended: true
    given:
      - "$.info.description"
      - "$.info.label"
      - "$.capability.exposes[*].description"
      - "$.capability.exposes[?(@.type == 'rest')].resources[*].description"
      - "$.capability.exposes[?(@.type == 'rest')].resources[*].operations[*].description"
      - "$.capability.exposes[?(@.type == 'mcp')].tools[*].description"
      - "$.capability.exposes[?(@.type == 'skill')].skills[*].description"
      - "$.consumes[*].description"
      - "$.capability.consumes[*].description"
    then:
      function: pattern
      functionOptions:
        notMatch: "<script"

  ikanos-no-eval-in-markdown:
    message: "Markdown fields must not contain eval() calls."
    description: >
      Analogous to no-eval-in-markdown (OAS). Protects against JavaScript
      injection attacks when description content is rendered in
      HTML/JS-based documentation or agent tooling.
    severity: error
    recommended: true
    given:
      - "$.info.description"
      - "$.info.label"
      - "$.capability.exposes[*].description"
      - "$.capability.exposes[?(@.type == 'rest')].resources[*].description"
      - "$.capability.exposes[?(@.type == 'rest')].resources[*].operations[*].description"
      - "$.capability.exposes[?(@.type == 'mcp')].tools[*].description"
      - "$.capability.exposes[?(@.type == 'skill')].skills[*].description"
      - "$.consumes[*].description"
      - "$.capability.consumes[*].description"
    then:
      function: pattern
      functionOptions:
        notMatch: "eval\\("

  ikanos-baseuri-not-example:
    message: "The `consumes.baseUri` should not point to example.com."
    description: >
      Analogous to oas2-host-not-example and oas3-server-not-example.com.
      Placeholder example.com URIs should never appear in production-bound
      capability documents — use real service URLs instead.
    severity: warn
    recommended: false
    given:
      - "$.consumes[*].baseUri"
      - "$.capability.consumes[*].baseUri"
    then:
      function: pattern
      functionOptions:
        notMatch: "example\\.com"

  # ────────────────────────────────────────────────────────────────
  # 4. CONTROL PORT
  # ────────────────────────────────────────────────────────────────

  ikanos-control-port-singleton-and-unique:
    message: "Control port validation failed."
    description: >
      At most one type: control adapter is allowed per capability, and its
      port must not conflict with any business adapter port.
    severity: error
    recommended: true
    given: "$"
    then:
      function: control-port-validation

  ikanos-control-address-localhost-warning:
    message: "Control adapter `address` should be `localhost` or `127.0.0.1` for security."
    description: >
      Binding the control port to a non-localhost address exposes management
      endpoints to the network. Use a Kubernetes NetworkPolicy or firewall
      rule to restrict access in production.
    severity: warn
    recommended: true
    given: "$.capability.exposes[?(@.type == 'control')].address"
    then:
      function: pattern
      functionOptions:
        match: "^(localhost|127\\.0\\.0\\.1)$"

  # ────────────────────────────────────────────────────────────────
  # 5. SCRIPT STEPS
  # ────────────────────────────────────────────────────────────────

  ikanos-script-defaults-required:
    message: >-
      {{error}}
    description: >
      Every script step must have a resolvable scripts directory and language.
      When a step omits 'location' or 'language', the engine falls back to
      'management.scripting.defaultLocation' or 'management.scripting.defaultLanguage'
      on the control adapter. If neither is set, the capability will fail at load time.
      This rule catches the misconfiguration at lint time.
    severity: error
    recommended: true
    given: "$"
    then:
      function: script-defaults-required

  # ────────────────────────────────────────────────────────────────
  # 6. IMPORTS — Unified import directive validation
  # ────────────────────────────────────────────────────────────────
  # See blueprints/unified-import-mechanism.md §11 for the full rule catalog.
  # Cross-file reference integrity (§11.2) is enforced by the engine resolver,
  # not by Spectral, because it requires file-system access.

  # §11.1 — Import directive structure

  ikanos-import-from-required:
    message: "Import entry must have both 'from' and 'import' fields."
    description: >
      Every import entry in a capability's consumes, exposes, aggregates, or binds
      section must specify 'from' (the source file path) and 'import' (the namespace
      to take from that source). An entry with only one of the two is invalid.
    severity: error
    recommended: true
    given:
      - "$.capability.consumes[?(@.from)]"
      - "$.capability.exposes[?(@.from)]"
      - "$.capability.aggregates[?(@.from)]"
      - "$.capability.binds[?(@.from)]"
    then:
      field: "import"
      function: truthy

  ikanos-import-import-required:
    message: "Import entry must have both 'from' and 'import' fields."
    description: >
      Complement of ikanos-import-from-required: catches entries that have 'import'
      but are missing 'from'.
    severity: error
    recommended: true
    given:
      - "$.capability.consumes[?(@.import && !@.type)]"
      - "$.capability.exposes[?(@.import && !@.type)]"
      - "$.capability.aggregates[?(@.import && !@.type)]"
      - "$.capability.binds[?(@.import && !@.type)]"
    then:
      field: "from"
      function: truthy

  ikanos-import-unique-alias:
    message: "Import alias uniqueness validation failed."
    description: >
      Within each section of a capability, the effective namespace of imported entries
      (the 'as' alias, or 'import' when no 'as') must be unique. Duplicate effective
      namespaces would cause ambiguous resolution after imports are materialized.
    severity: error
    recommended: true
    given: "$"
    then:
      function: import-alias-unique

  ikanos-import-from-not-self:
    message: "Import 'from' should not point to the current directory."
    description: >
      An import 'from' field that is a bare dot ('.') is always an authoring error
      because it resolves to the importing file's own directory.
      The engine resolver catches the actual self-reference at runtime.
    severity: warn
    recommended: true
    given:
      - "$.capability.consumes[?(@.from)].from"
      - "$.capability.exposes[?(@.from)].from"
      - "$.capability.aggregates[?(@.from)].from"
      - "$.capability.binds[?(@.from)].from"
    then:
      function: pattern
      functionOptions:
        notMatch: "^\\.$"

  # §11.3 — Layer enforcement (standalone files must not contain imports)

  ikanos-standalone-no-imports:
    message: "{{error}}"
    description: >
      Standalone section files (documents without a 'capability' key) are leaves
      in the import DAG. They must not contain import entries (entries with a 'from'
      field). Only capability documents may import from other files.
    severity: error
    recommended: true
    given: "$"
    then:
      function: standalone-no-imports

  # §11.4 — Section-specific: namespace required (importability)

  ikanos-exposes-namespace-required:
    message: "Each exposed adapter must have a 'namespace' to be importable."
    description: >
      Without a namespace, an exposed adapter cannot be referenced by an
      import directive from another file. Applies to standalone source files
      (root-level 'exposes' array) and to inline entries under
      'capability.exposes' that declare a 'type' (i.e. local definitions,
      not import entries — which have 'from' instead).
    severity: error
    recommended: true
    given:
      - "$.exposes[*]"
      - "$.capability.exposes[?(@.type)]"
    then:
      field: "namespace"
      function: truthy

  ikanos-aggregates-namespace-required:
    message: "Each aggregate must have a 'namespace' to be importable."
    description: >
      Without a namespace, an aggregate cannot be referenced by an import
      directive from another file. Applies to standalone source files
      (root-level 'aggregates' array) and to inline entries under
      'capability.aggregates' that declare 'functions' (i.e. local
      definitions, not import entries — which have 'from' instead).
    severity: error
    recommended: true
    given:
      - "$.aggregates[*]"
      - "$.capability.aggregates[?(@.functions)]"
    then:
      field: "namespace"
      function: truthy

  ikanos-aggregates-unique-function-name:
    message: "Aggregate function names must be unique within the same aggregate."
    description: >
      Duplicate function names within a single aggregate would cause ambiguous
      'call' and 'ref' resolution. Applies to both standalone and capability documents.
    severity: error
    recommended: true
    given:
      - "$.aggregates[*].functions"
      - "$.capability.aggregates[*].functions"
    then:
      function: aggregate-function-unique

  # Reverse Tunnel (blueprint: reverse-tunnel-private-network.md, Phase 1)

  ikanos-tunnel-identity-must-bind:
    message: "tunnel.identity must reference a declared binding."
    description: >
      When a ConsumesHttp 'tunnel' uses Mustache references in 'identity'
      (for example `{{secrets.ZITI_IDENTITY}}`), every referenced namespace and key
      must be declared in the document's 'binds' or 'capability.binds' section.
      Bare filesystem paths are accepted but discouraged.
    severity: error
    recommended: true
    given: "$"
    then:
      function: tunnel-identity-binds-ref

  ikanos-tunnel-fallback-direct-warns:
    message: >
      'tunnel.fallback: direct' on a non-loopback baseUri silently bypasses the
      tunnel and may leak traffic. Use 'fail' unless the baseUri itself is
      private/loopback.
    description: >
      A direct fallback means the engine will skip the tunnel and dial the baseUri
      directly when the tunnel cannot be opened. For public baseUris this defeats
      the privacy guarantees of the tunnel. Use 'fail' (the default) and let the
      operator decide how to recover.
    severity: warn
    recommended: true
    given:
      - "$.capability.consumes[?(@.tunnel && @.tunnel.fallback == 'direct')].baseUri"
      - "$.consumes[?(@.tunnel && @.tunnel.fallback == 'direct')].baseUri"
    then:
      function: pattern
      functionOptions:
        match: "^https?://(127\\.0\\.0\\.1|localhost|\\[::1\\])(:|/|$)"

  ikanos-tunnel-with-public-baseuri-warns:
    message: >
      Tunnel target uses a public TLD baseUri — confirm the hostname truly resolves
      through the tunnel and not via public DNS.
    description: >
      A 'tunnel' is intended for reaching APIs on private networks. When the
      baseUri points to a public TLD (.com, .net, .io, ...), the configuration
      may still be correct (the tunnel can override DNS), but it is worth
      double-checking that the upstream is not unintentionally reached over the
      public internet.
    severity: info
    recommended: true
    given:
      - "$.capability.consumes[?(@.tunnel)].baseUri"
      - "$.consumes[?(@.tunnel)].baseUri"
    then:
      function: pattern
      functionOptions:
        notMatch: "^https?://[^/]+\\.(com|net|org|io|co|app|dev|cloud|ai)(:|/|$)"