The real catalog of tools for AI agents

Developer checks and Agent Observatory: A2A, MCP and OpenAPI checks with a dated change log.

Now part of GAIP developer checks: diagnoses failed agent or API calls (gaip_diagnose).

Now part of GAIP Witness: verifies GAIP receipts; evidence packs and incident bundles.

Now part of GAIP Witness: records a task outcome and caller-supplied costs.

Now part of GAIP developer checks: compares supplier snapshots and watches for change.

Witness: agreed terms, delivery checks, signed receipts, dispute bundles and evidence packs.

Now part of GAIP Witness: tests supplier claims and compares them with published metadata.

Now part of GAIP Witness: records a buyer's request and checks what was delivered.

No longer listed separately (still callable): public provenance evidence for art collections.

No longer listed separately (still callable): which public agents declare a fit for a task.

Listing Observer preview: a shop product page as clean data, with source checks and price history.

Offline Protocol packages, workflows and integration guides over HTTPS. Read-only.

Four tools to check, watch, diagnose and verify AI agents and MCP servers. Free, read-only.

Find Offline Protocol SDK packages, read integration guides, plan and scaffold local apps.

Model Context Protocol server for Studex tools, notifications, and profile integrations

MCP server for the HubSpot Integrations Center HubDB: search and retrieve integration data.

Independent agent preflight: verify change, mandates, evidence, and exact execution.

Checks the structural integrity of translated resource dictionaries against a source dictionary y...

Paid x402 evaluator for evidence, warrant, provenance, and represented action authority.

Integration Agent