supported_version and minimum_version sat in 24 roles and were read by no template, no task and no lookup. Their only consumer was the audit report version column, which turned false the moment an automated image bump ran: qdrant reported a verified version nobody had verified, two releases long. Both leave MCP_KEYS, so a role that declares them again fails the schema lint instead of carrying a field with no effect.
Requirement 025 mandated minimum_version as a MUST and 035 carried it in an example; both are corrected here, otherwise the repository would contradict its own code.
The gate then surfaced five dead docs.mattermost.com links. Mattermost moved to /administration-guide/ and /deployment-guide/, and every replacement was probed for 200 rather than guessed. The MCP page is gone with no successor, so mattermost now points at mcpserver/README.md in the Agents repository, the source rather than a rendered mirror.
Both concerns share three files - mattermost's meta/mcp.yml, requirement 025, and the generated audit.md, which derives from a source of each - so splitting them would commit an artifact that does not match its sources.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The contract check ran as an Ansible task in the middle of every provider deploy, and the two client checks ran the same way. A test that is part of the deploy cannot be run without deploying, cannot be re-run on its own, and reports its verdict as a deploy failure. Twenty-seven task files lose 491 lines to this.
It is now what it always was. Each provider ships files/test/test.sh, templates/test.env.j2 and meta/tests.yml, and test-e2e-cli stages one shared harness beside it: run.sh drives contract.sh in a throwaway container on the provider's own network, then isolation.sh for adapter-fronted providers. The read probe each provider offers moved from the calling task into meta/mcp.yml next to the allowlist it must satisfy, and the schema now rejects a read probe naming a tool outside that allowlist.
The bearer the test presents is the one a client resolves through mcp.credential, via the new mcp_client_bearer lookup over resolve_credential, which moved to utils.roles.applications.mcp so it is the same function mcp_servers renders every client connection with. The probe presented whatever the calling role passed, which for the fifteen adapter-fronted providers is a different secret than any client holds.
Sidecar isolation is read from the engine rather than measured inside the container, so it no longer needs a delegation to the node holding the task: attachment is compared by network name, which drops the gwbridge special case, and a swarm worker says it cannot measure instead of skipping silently.
Retrying is bounded by wall clock against MCP_DEADLINE_SECONDS, which scales through the same lookup('timeout') as the harness budget it has to stay under. A flag that is neither true nor false aborts rather than reading as off.
mcp-provider-probe becomes mcp-provider-cli-test: an enabled provider must ship the test rather than include the task. mcp-probe-bearer becomes mcp-adapter-bearer, tying ADAPTER_BEARER to the declared credential key now that no probe include carries it. A new integration test renders the shared env template for every provider through Ansible's own templar, so a later change to it breaks visibly instead of poisoning twenty deploys quietly.
Hermes and OpenClaw keep their client-side proof as CLI tests of their own.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
enabled and shared were hand-maintained in 24 roles and wrong in both
directions. Both now resolve from the mcp_consumer edges already declared
in meta/services.yml: a server takes the consumers it admits, a client
takes the servers that admit it, and the pair renders as "'peer' in
group_names or ...", or False when no peer is admitted at all. setdefault
keeps meta/mcp.yml and meta/variants.yml as the override channel, so
pinning either key still wins.
The resolved block replaces the mapping instead of being written into it.
_build_role_base_config parks the YAML cache's own object under mcp, so an
in-place setdefault injected the derived keys into every later raw read and
made test_mcp_schema pass alone but fail in a directory run.
The derivation keys on peer presence, never on a peer's own value: a
re-entrant read under _RENDER_GUARD returns the unrendered dict.
Four lints now ask the resolver instead of reading meta/mcp.yml, which they
could not do while the key was hand-written. That is what exposed the eleven
missing hostile-path specs the previous commit closed.
Carries one change that belongs to the WordPress probe but shares a file
with this one: the tool allowlist moves to the hyphenated names the adapter
actually serves.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
allowed_consumers was twenty hand-kept lists of which fourteen were identical, so every new client meant an edit in every provider. A client now declares services.<own-entity>.mcp_consumer: true once and a provider refuses one with mcp_consumer: false, which is also what tells a deliberate exclusion apart from a forgotten entry.
The group_names-gated consumer entries give the inventory resolver the co-deploy edge meta/mcp.yml never had: one of sixty-nine matrix rounds carried an MCP client before, twenty-three role/round pairs do now. bond 0.5 keeps the clients out of round 0 so the host memory budget still holds.
BREAKING CHANGE: meta/mcp.yml no longer accepts allowed_consumers; declare services.<entity>.mcp_consumer on the client instead.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
f5272fa85f derived the 404 from mcp.endpoint.path, which for an
adapter-fronted provider names the sidecar. Mattermost declares /mcp
there and answers on /plugins/mattermost-ai/mcp-server/mcp, so the proxy
blocked a path the application never served while the native surface
stayed reachable. Baserow passed only because its two paths coincide -
one role agreeing proved nothing about the other four.
That surface is what the adapter exists to narrow: it serves four tools
out of fourteen, and the native path reaches all fourteen.
adapter.upstream_path joins upstream_network and upstream_transport in
meta, and the four roles whose upstream lives on their own vhost declare
it there. Gitea does not: its upstream is a separate sidecar on its own
network, so it has nothing to hide on the application's vhost, and the
absence says that.
The roles read the value back through lookup('config', ...) rather than
keeping a second copy, so the path is stated once.
The template now separates the two roles the old variable conflated:
endpoint.path is what gets served, and only where the surface is public
and enabled; every declared path that differs from it gets a 404. Three
tests pin the distinction rather than the outcome - mattermost's two
paths must differ, gitea must declare none, and a passthrough provider
must say where its upstream lives.
The least-privilege half of the criterion could not hold as built.
provision_mcp.py creates the endpoint owner's workspace through
CoreHandler().create_workspace, which makes that account its ADMIN, and
2.3.3 knows only ADMIN and MEMBER - both write table data. There is no
read-only workspace role to demote to, so mutating_tools_enabled: false
bounded nothing while create_rows, update_rows and delete_rows sat in the
served allowlist.
The adapter's contract simply omits them: a client calling one is refused
with DENY_UNKNOWN_TOOL. Omission is the mechanism, since passthrough.py
refuses to load a contract that lists a mutating tool while mutations are
off. The other ten stay recorded under upstream_serves so a version bump
enabling one shows up as drift rather than as a silently wider surface.
The transport was what reverted this twice. Baserow speaks classic
HTTP+SSE, where a GET opens the response stream and the stream names a
second URL for requests, while the adapter only ever spoke Streamable
HTTP. adapter.upstream_transport selects sse.py and defaults to
streamable_http, so no existing provider changes.
The endpoint key stops being a client credential. Clients present
credentials.mcp_bearer to the sidecar; the key reaches the sidecar as
ADAPTER_UPSTREAM_PATH_KEY and is spliced in percent-encoded, so it never
enters the rendered contract and a key carrying a separator cannot open a
path of its own.
Deploy is green: the probe reached list_databases over SSE, the served
surface matched the contract, and the sidecar proved it reaches only its
provider.
Both agents registered every tool every provider served. Hermes documents that as its own default in tools/mcp_tool.py, "Neither set -> register all tools", and the role never set tools.include; OpenClaw's toolFilter was never rendered at all. A provider that grew a mutating tool would have reached both without anything declaring it.
A serving role now names its mutating tools, the discovery snapshot carries that set beside the allowlist, and every client renders the allowlist minus it in whatever form its upstream enforces. The subtraction sits at the client and not in discovery because Flowise compares the declared set against what its registry actually discovered and needs the full served list. Where a provider permits mutations there is nothing to withhold, so the set renders empty.
This is a client-side boundary, not a server-side one: whoever holds the endpoint key can still call a write tool directly. Baserow is the case that made it necessary, since its MCPEndpoint model carries no scope and its owner is a workspace administrator, so the declared mutating_tools_enabled bounds nothing there.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The block sat under services but never behaved like a service. A service has
exactly one providing role, declared with provides, so the registry can map the
key to that role and consumers bind their flag to its presence. No role declares
provides: mcp. There are seventeen providers and the pairing is done by
allowed_consumers inside the block itself.
Every rule that enforces the service model therefore needed an exemption for it:
a shared-provider suppression in fourteen roles, a playwright-service-flag
suppression, and two freshly added exemptions in the dynamic-flag and
variants-static-override checks. Four independent rules, four escape hatches,
one cause. They are all gone now, together with a bond key that only the
resource budgeter reads and only for entries under services, and a wordpress
addon bridge that pointed at a service block that no longer exists.
The block moves to meta/mcp.yml. The applications loader maps meta/<name>.yml to
applications.<app>.<name> generically, so the move needs no wiring; the file
takes the same shape as meta/rbac.yml. Every config path follows, the variant
overrides are lifted out of their services map, and the vocabulary module leaves
the services package because it no longer describes one. roles_with_service
gains an explicit topic parameter rather than an implicit fallback, so nothing
silently resolves against the wrong container.
Files that are otherwise unrelated to this move are included where the committed
tree would otherwise keep pointing at a path that no longer resolves: thirteen
vars files, eleven playwright env templates and one task file.
kevinveenbirkenbachandClaude Opus 5