Claude MarketplacesSubmit
tethral-inc avatar

ACR — Agent Composition Records

tethral-inc/agentregistry

An interaction profiling system for AI agents that logs every external tool call and compiles behavioral analytics through queryable lenses. Agents auto-register on first use, then call log_interaction after each MCP server call, API request, or tool invocation to build a friction profile over time. The friction lens shows where your agent loses time and tokens: bottleneck detection, retry waste analysis, chain overhead, and population baselines across all registered agents. You also get anomaly signal notifications when the network observes unusual patterns affecting skills in your agent's composition. Think of it as observability infrastructure for agentic workflows. The SDK works standalone or through MCP tools like get_friction_report and get_network_status. No content logging, just timing and status metadata.

tools
6
transport
STDIO
env var
1
last updated
Jul 23, 2026
View on GitHub

Tools

6 tools

Public tool metadata for what this MCP can expose to an agent.

orient_meWhere am I, what should I do next — state-aware routing

Where am I, what should I do next — state-aware routing

No parameter schema in public metadata yet.

log_interactionLog an interaction with rich fields (retry_count, chain_id, tokens_used…)

Log an interaction with rich fields (retry_count, chain_id, tokens_used…)

No parameter schema in public metadata yet.

get_friction_reportThe friction lens: where time and tokens go

The friction lens: where time and tokens go

No parameter schema in public metadata yet.

summarize_my_agentEnd-of-session summary

End-of-session summary

No parameter schema in public metadata yet.

get_notificationsUnread anomaly-signal notifications for your composition

Unread anomaly-signal notifications for your composition

No parameter schema in public metadata yet.

get_my_agentIdentity, dashboard link, registration state

Identity, dashboard link, registration state

No parameter schema in public metadata yet.

Sponsors

Promote your product hereReach 125k+ visitors monthlyPromote your product hereReach 125k+ visitors monthlyAgent CaffeineSponsoredClose your lid, come back to finished workSnugSponsoredThe clipboard manager for the AI eraPromote your product hereReach 125k+ visitors monthlyWaxSponsoredBlock anything with supervision, without erasing your iPhonePromote your product hereReach 125k+ visitors monthlyknobsSponsoredSee your site on any phone, any day, in any language

Configuration

ACR_API_URL

ACR API endpoint. Defaults to https://acr.nfkey.ai

Readme

ACR — Agent Composition Records

A behavioral registry for AI agents. ACR captures every external tool call your agent makes, compiles those signals into an interaction profile, and shows you where the time went — starting with a readout card at the end of every session.

npm npm npm

Get started (60 seconds, Claude Code)

npm i -g @tethral/acr-hook && acr-hook init

That's the whole setup. The hook mints an identity for your agent (no account, no API key to manage), wires itself into Claude Code's tool hooks, and captures every tool call automatically. When your next session ends, a card prints in your terminal:

── ACR session card ──
  142 tool calls | 4.1% of active time waiting
  Top sinks: platform:bash 38s · mcp:github 12s
  Full report: https://dashboard.acr.nfkey.ai/agents/…

View the full README on GitHub

Details

Repository
github.com/tethral-inc/agentregistry
Website
acr.nfkey.ai
Category
Monitoring & Observability
Package
@tethral/acr-mcp
Transport
STDIO
Registry
MCP registry, active

Related Monitoring & Observability MCP servers

View all
1jmagar avatarSyslog MCPjmagar/syslog-mcpSyslog receiver and MCP server for homelab log intelligence.1stars
2speedofme avatarSpeedOf.Mespeedofme/speedofme-mcpOfficial SpeedOf.Me server - Accurate speed tests via over 200 global edge servers with analytics.1stars
3valyay avatarNanostores MCPvalyay/nanostores-mcpDebug and analyze Nanostores apps with AI: scan stores, monitor runtime events, and search docs.1stars
4andrewmpierce avatarYoufiliate Smart Linksandrewmpierce/youfiliate-mcpCreate geo-targeted affiliate smart links, pull analytics, and rewrite YouTube descriptions.0stars
5blocklens avatarBlocklens Mcp Serverblocklens/blocklens-mcp-serverBitcoin on-chain analytics — 109 metrics: MVRV, SOPR, NUPL, HODL Waves, CDD, cycles & more0stars
6clauxel avatarSregymgate Mcpclauxel/sregym-incident-replay-gate-mcpA paid remote MCP for SREGym, built to return verdicts, receipts, usage logs, and audit-ready JSON.0stars