microsoft/agent-host-protocol

Synchronized multi-client state for AI agent sessions

Stars: 348
Forks: 122
Open beginner issues: 0
Indexed issues: 34
Avg merge: 14h 12m
Merged PRs (30d): 22

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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34 open issues indexed

Support source attribution in agent responses Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

microsoft/agent-host-protocol#452 · 1 comment · Opened Sep 16, 2026
`ToolDefinition` has no way for a client to scope a tool away from tool-spawned chats Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

microsoft/agent-host-protocol#446 · Opened Sep 11, 2026
Support portable icons for session configuration options Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#444 · 1 comment · Opened Sep 11, 2026
Support minItems and maxItems in config array schemas Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

microsoft/agent-host-protocol#432 · Opened Sep 1, 2026
summaryStatus reports Idle while queued messages are pending, causing status flicker Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/agent-host-protocol#426 · Opened Aug 27, 2026
Proposal: add a transport-neutral TypeScript AHP server package Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#422 · 1 comment · Opened Aug 27, 2026
.NET client: support trimming and Native AOT Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#410 · Opened Aug 23, 2026
Persist per-chat read watermarks through turn IDs Open

feature-request

microsoft/agent-host-protocol#401 · 1 assignee · Opened Aug 14, 2026
1.0.0 blocker: unknown enum values fail to decode, contradicting the additive-change guarantee Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#366 · Opened Jul 29, 2026
Proposal: Collection Attachments Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

microsoft/agent-host-protocol#362 · Opened Jul 27, 2026
Kotlin client: no `AhpClient`, transport, or `MultiHostClient` — is this planned internally? Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/agent-host-protocol#360 · Opened Jul 26, 2026
RFC: Chats as a DAG Open

feature-request under-discussion

microsoft/agent-host-protocol#353 · 1 reaction · 1 assignee · Opened Jul 22, 2026
OTLP channel: `otlp/export*` server→client notifications aren't surfaced by the clients Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#342 · Opened Jul 17, 2026
Add a per-chat config concept (ChatConfig) to complement session-scoped SessionConfig Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

microsoft/agent-host-protocol#335 · Opened Jul 14, 2026
Consider a lightweight progress content block for streaming non-terminal-backed shell output Open

microsoft/agent-host-protocol#323 · 1 assignee · Opened Jul 8, 2026
Add a python client for AHP Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/agent-host-protocol#320 · 1 comment · Opened Jul 8, 2026
Add a native `argumentHint` field to `SkillCustomization` for slash-command argument help Open

under-discussion

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

microsoft/agent-host-protocol#303 · 1 comment · Opened Jul 3, 2026
Proposal: Canvas — declared, instanced, agent-openable UI surfaces on a dedicated channel Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#297 · Opened Jul 2, 2026
Add a non-directory grouping container for host-discovered customizations Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

microsoft/agent-host-protocol#287 · Opened Jun 30, 2026
Relationship between ACP and AHP Open

Difficulty 3/5 1-2 days Newbie friendliness 50/100

microsoft/agent-host-protocol#282 · 2 comments · Opened Jun 27, 2026
Proposal: Client-Executed Terminals — let terminals run pty processes on clients Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/agent-host-protocol#281 · Opened Jun 27, 2026
Proposal: ChatSummary message preview for catalog rendering without subscribing Open

microsoft/agent-host-protocol#273 · 1 comment · 1 reaction · 1 assignee · Opened Jun 26, 2026
`mcp://` channel: no schematized carrier for the verbatim-MCP traffic the spec describes (`mcpMethodCall`/`mcpNotification` named only in prose) Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/agent-host-protocol#271 · 1 comment · Opened Jun 26, 2026
Proposal: host-advertised encryption keys for sealing pushed values end-to-end (first application: the `authenticate` token) Open

under-discussion

microsoft/agent-host-protocol#268 · 1 assignee · Opened Jun 26, 2026
Proposal: isolating priv'd operations and approvals Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/agent-host-protocol#266 · 7 comments · Opened Jun 25, 2026
Verified client identities (self-sovereign clientId via did:key) Open

enhancement under-discussion

microsoft/agent-host-protocol#259 · 1 assignee · Opened Jun 23, 2026
A cross-client self-instrumentation telemetry-names contract Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/agent-host-protocol#239 · 3 comments · Opened Jun 18, 2026
authenticate / auth-required can't model per-session, request-correlated OAuth (e.g. MCP server OAuth) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/agent-host-protocol#221 · Opened Jun 15, 2026
A .NET client for AHP Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/agent-host-protocol#214 · 1 comment · Opened Jun 10, 2026
Use Protocol_version instead of '0.3.0' Open

debt

microsoft/agent-host-protocol#180 · 1 assignee · Opened May 30, 2026
Proposal: add systemMessageTransform server→client RPC for SDK-style system-prompt section transforms Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/agent-host-protocol#164 · 1 comment · Opened May 28, 2026
Proposal: sessionFs/* server → client request family for client-provided per-session filesystem Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#162 · 4 comments · Opened May 28, 2026
Reconsider host-level agent auth state Open

under-discussion

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#153 · 5 comments · Opened May 27, 2026
RFC: Message Chunking Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-host-protocol#138 · Opened May 19, 2026

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