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OpenClaw API Guide
Best APIs to Use with OpenClaw for AI Workflows
Compare APIs for OpenClaw across research, market data, and tool execution, with access and failure checks.
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APIs for a local-first assistant with explicit boundaries
This is a use-case shortlist, not a universal vendor ranking. We favored APIs with official documentation, structured responses, scoped authentication, predictable errors, and a clear job inside an agent workflow. Each choice must add data or action that OpenClaw does not already have locally.
OpenClaw supports tools, plugins, skills, webhooks, and automation. QVeris documents a native OpenClaw plugin and skill setup, while OpenClaw's official tools overview explains how registered tools become available to agents.
Selection rule: Choose by the missing job, not by API popularity. Begin with one read-only operation that returns bounded, attributable results.
The 8 best APIs to use with OpenClaw
1
QVeris API & Plugin
Best for unified tool discoveryQVeris is useful when one OpenClaw workflow needs several verified, API-backed capabilities without a custom adapter for every provider. Its Discover → Inspect → Call pattern lets the agent find an operation, inspect parameters, and execute only after the operation is understood. Use the native plugin for runtime reliability; use the skill when a lightweight, instruction-only setup is sufficient.
Read the OpenClaw setup guide · Build a persistent research report
2
Brave Search API
Best for current web researchBrave Search gives OpenClaw current web results for research, monitoring, fact checks, and source discovery. It is better suited to open-web retrieval than a documentation-only index. Require citations, cap result counts, and treat every page as untrusted input.
3
Google Workspace APIs
Best for email, calendar, and documentsGmail, Calendar, Drive, and Docs APIs can turn OpenClaw into a practical work assistant: summarize a thread, check availability, prepare an event, or organize approved files. Begin with metadata and read scopes. Draft messages and calendar changes before asking for explicit approval to send or save them.
4
GitHub REST & GraphQL APIs
Best for software deliveryGitHub APIs provide structured access to issues, pull requests, checks, releases, and repository metadata. They fit triage, release summaries, and coding-agent coordination. Start with named repositories and read access; keep merges, branch protection changes, releases, and deletions behind approval.
5
Supabase APIs
Best for application dataSupabase exposes Postgres data, authentication, storage, and server-side functions through documented APIs. It is a strong fit when OpenClaw must inspect application state or trigger a narrow backend workflow. Use a development project first, enforce Row Level Security, and never expose a service-role key to the agent.
6
Slack Web API
Best for team coordinationSlack's Web API supports channel history, search, message posting, reactions, and workflow events. OpenClaw can summarize a bounded thread or draft a status update. Restrict workspace scopes, separate reading from posting, and preview messages before they are sent.
Read the official Slack Web API documentationSlack provider details
7
Stripe API
Best for payments and billingStripe is appropriate for checkout, subscriptions, invoices, and webhook-driven billing state. Use test mode, verify webhook signatures, and make handlers idempotent. Keep payment creation, refunds, subscription changes, and customer-data access behind explicit approval.
Read the official Stripe API referenceStripe provider details
8
Sentry API
Best for production diagnosisA read-only Sentry integration can give OpenClaw issue details, stack traces, release context, and event samples. Redact sensitive event data, correlate more than one signal before claiming a root cause, and require a regression test before resolving an issue.
Choose tools by what may leave the device
| Need | Start with | First safe operation | Required guardrail |
|---|---|---|---|
| Discover many tools | QVeris | Discover + Inspect | Allow only selected calls |
| Current web evidence | Brave Search | Bounded search | Citations and result caps |
| Office workflow | Google Workspace | Read metadata | Approve sends and edits |
| Software delivery | GitHub | Read issues and PRs | No automatic merge |
| Application state | Supabase | SELECT | RLS |
| Team updates | Slack | Draft a message | Preview before posting |
| Billing | Stripe | Test-mode lookup | Signed webhooks |
| Incident diagnosis | Sentry | Read issue context | Redaction and regression tests |
A safe OpenClaw API implementation pattern
Define one bounded job
Specify inputs, outputs, freshness, result limits, and whether the operation reads or writes.
Wrap credentials outside the prompt
Keep secrets in the plugin environment or an approved secret manager. Expose a narrow tool, not a raw key.
Validate arguments and responses
Enforce schemas, timeouts, pagination, retry limits, provenance, and normalized errors.
Test failure paths
Cover invalid authentication, empty results, rate limits, partial responses, duplicate webhooks, and revoked permissions.
Gate network and write actions separately
- Use separate credentials for development, testing, and production.
- Default to read-only scopes and add write permissions one operation at a time.
- Require confirmation for messages, payments, deletions, merges, and access changes.
- Cap rows, pages, payload size, date ranges, retries, and total calls.
- Treat API responses as untrusted input and log tool decisions without unnecessary personal data.
For a narrower implementation example, read about real-time stock market data for OpenClaw.
Frequently asked questions
Can OpenClaw call external APIs?
Yes. OpenClaw can use registered tools and plugins, while QVeris provides a native plugin and a lightweight skill for discovering and calling API-backed capabilities.
Which API should I connect first?
Choose the API that supplies the one piece of external evidence or action currently blocking a repeated workflow. Start read-only and measure whether it improves the complete task.
Should I give OpenClaw a raw API key?
No. Store credentials in the plugin environment or an approved secret manager and expose only narrowly scoped operations.
Is an API the same as an OpenClaw skill?
No. An API is a service interface. A skill mainly provides instructions about when and how to use capabilities, while a plugin can register callable tools at runtime.
Give OpenClaw one dependable API before giving it eight
Test one exact operation with bounded inputs, inspect the response, and only then connect it to automation.