UAIX Agent Fallbacks And Net Package Boundary

The core concept is: ramp up only after capability is proven; ramp down before guessing.

Metadata

Field	Value
Source site	aiwikis.org
Source URL	https://aiwikis.org/
Canonical AIWikis URL	https://aiwikis.org/aiwikis/files/wiki-concepts-uaix-agent-fallbacks-dotnet-boundary-md-49af3425/
Source reference	wiki/concepts/uaix-agent-fallbacks-dotnet-boundary.md
File type	md
Content category	llm-wiki
Last fetched	2026-06-22T01:56:21.9510185Z
Last changed	2026-06-15T03:56:28.9359190Z
Content hash	sha256:49af3425fc4382e0e91fb3f402d3f8610cbb6d304c18c92ef44d24f13f953683
Import status	new
Raw source layer	data/sources/aiwikis/wiki-concepts-uaix-agent-fallbacks-dotnet-boundary-md-49af3425fc43.md
Normalized source layer	data/normalized/aiwikis/wiki-concepts-uaix-agent-fallbacks-dotnet-boundary-md-49af3425fc43.txt

Current File Content

Structure Preview

• UAIX Agent Fallbacks and .NET Package Boundary
• Fallback Chain
• No-Op Rule
• MCP And A2A Boundary
• Package Version Rule
• Non-Claims
• Related Nodes

Raw Version

---
uai_id: "3d1b6d40-cfe9-4792-b601-260f166d6b79"
type: "concept"
owner: "AIWikis maintainers"
status: "Reviewed"
source_status: "local synthesis from the 2026-06-15 UAIX agent fallback and .NET package boundary pass"
sensitivity: "public-safe source-side memory"
agent_use: "load before describing UAIX fallback-chain rules, MCP/A2A boundaries, No-Op behavior, or .NET NuGet package versioning"
lineage:
  - "raw/uaix/reports/2026-06-15-agent-fallbacks-dotnet-boundary/manifest.json"
  - "wiki/sources/uaix-agent-fallbacks-dotnet-boundary-2026-06-15.md"
  - "content/pages/085-uaix-agent-fallbacks-dotnet-boundary.md"
source_trace:
  - "UAIX Agent Fallbacks and Full-Spectrum Support source pass"
  - "UAIX Agent Executability Matrix fallback fields"
  - "UAIX .NET adaptive interoperability planning"
  - "Human package-version clarification"
confidence: 0.9
confidence_label: "reviewed-local"
last_linted: "2026-06-15T00:00:00Z"
handoff_export: "include"
aliases:
  - "UAIX Fallback Chain Rule"
  - "UAIX NuGet Version Boundary"
  - "UAIX MCP Boundary"
last_reviewed: "2026-06-15"
typed_relations:
  part_of:
    - "wiki/index.md"
  depends_on: []
  supersedes: []
  contradicts: []
  source_for: []
---
# UAIX Agent Fallbacks and .NET Package Boundary

The core concept is: ramp up only after capability is proven; ramp down before guessing.

## Fallback Chain

Every action-capable UAIX route should tell agents:

- highest supported path
- lowest safe fallback
- POST-blocked fallback
- live-GET-blocked fallback
- MCP-unavailable fallback
- auth-unavailable fallback
- tool-unavailable fallback
- human-review URL
- No-Op behavior

These fields make a single route usable by URL-only chatbots, indexed fetchers, browser agents, JSON POST clients, authenticated owner agents, restore/readback agents, multi-agent runtimes, A2A peers, MCP clients, and MCP-server-capable hosts without pretending all of those clients have the same powers.

## No-Op Rule

No-Op is not failure to be helpful. It is the safe result when the agent lacks capability, consent, public-safe context, authentication, tool availability, route proof, or fallback evidence.

## MCP And A2A Boundary

UAIX can describe MCP and A2A interoperability patterns, and implementation packages may adapt to host-provided MCP or A2A capabilities. A UAI-1 record alone does not prove MCP support, A2A support, hosted tools, hosted runtime, or executable delegation.

## Package Version Rule

UAI-1 remains `v1.0`. NuGet package versions are independent implementation releases. Versioning a .NET package does not version the UAI spec.

## Non-Claims

This concept does not establish current SDK, CLI, hosted MCP server, hosted A2A service, certification, endorsement, live deployment, automatic writes, or conformance for consumers.

## Related Nodes

- [[../sources/uaix-agent-fallbacks-dotnet-boundary-2026-06-15]]
- [[../logs/uaix-agent-fallbacks-dotnet-boundary-2026-06-15]]
- [[uaix-wizard-file-handoff-llm-wiki-current-state]]
- [[../index]]

Why This File Exists

This is a LLM Wiki memory file from aiwikis.org. It is shown here because AIWikis.org is demonstrating the real source files that make the UAIX / LLM Wiki memory system work, not only summarizing those systems after the fact.

Role

This file belongs to the source-side wiki layer. It preserves a focused concept, source proxy, graph record, or operating rule so the public site can cite reviewed conclusions without flattening every reason into a single long page.

Structure

The file is structured around these visible headings: UAIX Agent Fallbacks and .NET Package Boundary; Fallback Chain; No-Op Rule; MCP And A2A Boundary; Package Version Rule; Non-Claims; Related Nodes. Those headings are retrieval anchors: a crawler or LLM can decide whether the file is relevant before reading every line.

Prompt-Size And Retrieval Benefit

Keeping this material in a separate file reduces prompt pressure because an agent can load this exact unit only when its role, source site, category, or hash is relevant. The surrounding index pages point to it, while this page preserves the full content for audit and exact recall.

How To Use It

• Humans should read the metadata first, then inspect the raw content when they need exact wording or provenance.
• LLMs and agents should use the source site, category, hash, headings, and related files to decide whether this file belongs in the active prompt.
• Crawlers should treat the AIWikis page as transparent evidence and follow the source URL/source reference for authority boundaries.
• Future maintainers should regenerate this page whenever the source hash changes, then review the explanation if the role or structure changed.

Update Requirements

When this source file changes, update the raw source layer, normalized source layer, hash history, this rendered page, generated explanation, source-file inventory, changed-files report, and any source-section index that links to it.

Related Pages

• Source overview
• Site file index
• Site report index
• UAI system index
• Source provenance
• Site directory
• Organization reports

Provenance And History

• Current observation: 2026-06-22T01:56:21.9510185Z
• Source origin: current-source-workspace
• Retrieval method: local-source-workspace
• Duplicate group: sfg-364 (primary)
• Historical hash records are stored in data/hashes/source-file-history.jsonl.

Machine-Readable Metadata

{
    "title":  "UAIX Agent Fallbacks And Net Package Boundary",
    "source_site":  "aiwikis.org",
    "source_url":  "https://aiwikis.org/",
    "canonical_url":  "https://aiwikis.org/aiwikis/files/wiki-concepts-uaix-agent-fallbacks-dotnet-boundary-md-49af3425/",
    "source_reference":  "wiki/concepts/uaix-agent-fallbacks-dotnet-boundary.md",
    "file_type":  "md",
    "content_category":  "llm-wiki",
    "content_hash":  "sha256:49af3425fc4382e0e91fb3f402d3f8610cbb6d304c18c92ef44d24f13f953683",
    "last_fetched":  "2026-06-22T01:56:21.9510185Z",
    "last_changed":  "2026-06-15T03:56:28.9359190Z",
    "import_status":  "new",
    "duplicate_group_id":  "sfg-364",
    "duplicate_role":  "primary",
    "related_files":  [

                      ],
    "generated_explanation":  true,
    "explanation_last_generated":  "2026-06-22T01:56:21.9510185Z"
}