Cloudflare Workers Observability

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Tools catalogued

10

10 tools available. Full list below.

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Hosting

Remote / HTTP

Runs on the internet. No access to your filesystem, SSH keys, or environment variables.

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Registry presence

Not verified

Not yet verified by the Official MCP Registry.

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Liveness

100%

Based on 48 checks. Average response: 460ms.

accounts_list

List all accounts in your Cloudflare account

set_active_account

Set active account to be used for tool calls that require accountId

workers_list

List all Workers in your Cloudflare account. If you only need details of a single Worker, use workers_get_worker.

workers_get_worker

Get the details of the Cloudflare Worker.

workers_get_worker_code

Get the source code of a Cloudflare Worker. Note: This may be a bundled version of the worker.

query_worker_observability

Query the Workers Observability API to analyze logs and metrics from your Cloudflare Workers. * A query typical query looks like this: {"view":"events","queryId":"workers-logs-events","limit":5,"dry":true,"parameters":{"datasets":["cloudflare-workers"],"filters":[{"id":"520","key":"message","operation":"eq","type":"string","value":"Clickhouse Statistics"},{"id":"2088","key":"statistics.elapsed","operation":"gt","type":"number","value":"0.269481519"}],"calculations":[],"groupBys":[],"havings":[]},"timeframe":{"to":"2025-04-30T20:53:15Z","from":" ""2025-04-30T19:53:15Z"}} ## Core Capabilities This tool provides three primary views of your Worker data: 1. **List Events** - Browse individual request logs and errors 2. **Calculate Metrics** - Compute statistics across requests (avg, p99, etc.) 3. **Find Specific Invocations** - Locate individual requests matching criteria ## Filtering Best Practices - Before applying filters, use the observability_keys and observability_values tools to confirm available filter fields and the correct filter value to add unless you have the data in a response from a previous query. - Common filter fields: $metadata.service, $metadata.trigger, $metadata.message, $metadata.level, $metadata.requestId, ## Calculation Best Practices - Before applying calculations, use the observability_keys tools to confirm key that should be used for the calculation ## Troubleshooting - If no results are returned, suggest broadening the time range or relaxing filters - For errors about invalid fields, recommend using observability_keys to see available options