`mcp_completion_protocol`

Protocol for Logtalk objects that provide MCP prompt argument and resource URI completions. Used by the 2025-06-18, 2025-11-25, and 2026-07-28 adapters.

| Availability: | logtalk_load(mcp_server(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-09-02

| Compilation flags: | static

| Dependencies: | (none)

| Remarks:

Capabilities: Objects providing completions must declare completions in their capabilities/1 predicate (from the mcp_tool_protocol protocol).
References: The reference is either prompt(Name) for a declared prompt or resource(URI) for a declared resource URI or URI template.
Results: The result is completion(Values) or completion(Values, Total, HasMore). Values is an application-ranked list of atoms. The server preserves the first 100 values and sets hasMore to true when truncation is required. Total is a non-negative integer and HasMore is true or false.

| Inherited public predicates: | (none)

.. contents:: :local: :backlinks: top

Public predicates

.. index:: completion/4 .. _mcp_completion_protocol/0::completion/4:

completion/4 ^^^^^^^^^^^^^^^^

Returns completion suggestions for a prompt argument or resource URI. Reference is prompt(Name) or resource(URI), Argument is an ArgumentName-PartialValue pair, Context is a list of previously resolved Name-Value argument pairs, and Result is completion(Values) or completion(Values, Total, HasMore).

| Compilation flags: | static

| Template: | completion(Reference,Argument,Context,Result) | Mode and number of proofs: | completion(+compound,+pair,+list(pair),--compound) - one

Protected predicates

(none)

Private predicates

(none)

Operators

(none)