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AGENTOPS04-BP01 Implement tool registry and catalog management - Agentic AI Lens
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AGENTOPS04-BP01 Implement tool registry and catalog management

Agents that can't discover tools end up with hardcoded integrations, inconsistent documentation, and a maintenance tax that grows with every new capability. A centralized registry makes the tool catalog queryable, versioned, and governable.

Desired outcome:

  • A centralized tool registry provides a single authoritative source for tool capabilities, current versions, and operational status.

  • Tool documentation is standardized and complete so agents can select and invoke tools without guesswork.

  • Tool versioning and compatibility tracking help prevent agents from invoking deprecated or incompatible versions.

  • Tool deprecation procedures remove sunset tools cleanly without disrupting dependent agents.

Common anti-patterns:

  • Allowing each team to manage tool definitions independently without a shared registry, producing duplicate tools, inconsistent documentation, and agents that can't discover tools built by other teams.

  • Registering tools without documentation standards, leaving agents to guess at parameter formats and error codes through trial and error.

  • Deprecating tools without notifying dependent agents, causing runtime failures when agents attempt to invoke tools that no longer exist.

  • Letting the registry drift out of step with reality, so health status in the registry contradicts actual tool availability.

Benefits of establishing this best practice:

  • A single source of truth for tool capabilities and status means all agents discover and use tools consistently, and updates propagate reliably.

  • Centralized visibility into the tool catalog lets teams track availability, version distribution, and dependency relationships across the agent portfolio.

  • Documentation standards reduce invocation errors by giving agents complete, structured information about each tool.

  • Deprecation workflows give dependent agents time to migrate before tools are removed, helping prevent outages.

Level of risk exposed if this best practice is not established: Medium

Implementation guidance

Start with what Amazon Bedrock AgentCore Gateway provides before building custom. AgentCore Gateway includes semantic tool discovery and MCP server capabilities that handle cataloging, versioning, and discovery without custom infrastructure. For many teams this covers the registry requirement completely. Evaluate AgentCore Gateway against the discovery workflow you need, including capability search, version tracking, and dependency metadata, before investing in parallel infrastructure.

A gap for most organizations is documentation standards, not the registry mechanism. A tool entry can be invoked incorrectly without a purpose statement, parameter schemas, error codes, rate limits, and authentication requirements. Enforce completeness as a gate in the onboarding process rather than as a post-registration suggestion. The cost of rejecting an undocumented tool during registration is lower than the cost of debugging misuse after deployment.

Semantic versioning with compatibility guarantees helps agents and tools evolve at different speeds. A new version of a tool should not silently break agents that were written against the previous version, and a new agent should not be blocked on tools that have not exposed the version it needs. Maintain multiple active versions during transitions, and implement deprecation workflows that notify dependent agents before they are deprecated. Health checks update tool operational status so that the registry is updated with realistic data.

Implementation steps

  1. Evaluate Amazon Bedrock AgentCore Gateway as the primary registry: Use its semantic tool discovery and MCP server capabilities, and supplement with custom infrastructure only where a specific capability is missing.

  2. Define tool documentation standards: Require purpose, parameter schemas, error codes, rate limits, and authentication requirements. Enforce completeness as a gate in the tool onboarding process.

  3. Implement semantic versioning: Use compatibility guarantees and maintain multiple active versions during transitions so agents and tools can evolve independently.

  4. Configure health checks and deprecation workflows: Update operational status automatically and notify dependent agents before sunset dates.

Resources

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