api-security-best-practices
Implement secure API design patterns including authentication, authorization, input validation, rate limiting, and protection against common API vulnerabilities
manifest
Install and configure the Manifest observability plugin for your agents. Use when setting up telemetry, configuring API keys, or troubleshooting the plugin.
Full skill instructions
Follow these steps in order. Do not skip ahead.
observability-engineer instead)Stop the gateway first to avoid hot-reload issues during configuration.
claude gateway stop
claude plugins install manifest
If it fails, check that the CLI is installed and available in the PATH.
Ask the user:
To connect your agent, you need a Manifest API key. Here's how to get one:
- Go to https://app.manifest.build and create an account (or sign in)
- Once logged in, click "Connect Agent" to create a new agent
- Copy the API key that starts with
mnfst_- Paste it here
Wait for a key starting with mnfst_. If the key doesn't match, tell the user the format looks incorrect and ask them to try again.
claude config set plugins.entries.manifest.config.apiKey "USER_API_KEY"
Replace USER_API_KEY with the actual key the user provided.
Ask the user if they have a custom endpoint. If not, the default (https://app.manifest.build/api/v1/otlp) is used automatically. If they do:
claude config set plugins.entries.manifest.config.endpoint "USER_ENDPOINT"
claude gateway install
Wait 3 seconds for the gateway to fully start, then check the logs:
grep "manifest" ~/.claude/logs/gateway.log | tail -5
Look for:
[manifest] Observability pipeline active
If it appears, tell the user setup is complete. If not, check the error messages and troubleshoot.
mnfst_ prefix) before writing to config| Error | Fix |
|---|---|
| Missing apiKey | Re-run step 4 |
| Invalid apiKey format | The key must start with mnfst_ |
| Connection refused | The endpoint is unreachable. Check the URL or ask if they self-host |
| Duplicate OTel registration | Disable the conflicting built-in plugin: claude plugins disable diagnostics-otel |
Use @manifest to set up observability for my agent.
Use @manifest to connect my agent to my self-hosted Manifest instance at https://manifest.internal.company.com/api/v1/otlp
mnfst_ — any other format is invalidImplement secure API design patterns including authentication, authorization, input validation, rate limiting, and protection against common API vulnerabilities
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