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OpenClaw integration pattern (short): Install an OpenClaw skill through ClawHub, choose a clear authentication model (OAuth or API key) for Answer Overflow, run an external adapter service to handle OAuth token exchanges, webhooks, and any stateful or long-running work, and configure the skill with only the minimal secrets and environment variables it needs to call that adapter or the Answer Overflow API. Validate and debug by checking request logs, HTTP responses, token scopes, webhook signatures, and that the skill invocation reaches your adapter.
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<b>//</b> Example minimal Express adapter: OAuth callback, token store (in-memory for demo), and proxy search.
const express = require('express');
const fetch = require('node-fetch');
const app = express();
app.use(express.json());
<b>//</b> Replace with a secure store in production
const tokenStore = new Map();
<b>//</b> Called by Answer Overflow after user authorizes
app.get('/oauth/callback', async (req, res) => {
const code = req.query.code;
if (!code) return res.status(400).send('missing code');
<b>//</b> Exchange code for tokens at Answer Overflow token endpoint
const tokenResp = await fetch('https://api.answeroverflow.example/oauth/token', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
client_id: process.env.AO_CLIENT_ID,
client_secret: process.env.AO_CLIENT_SECRET,
grant_type: 'authorization_code',
code,
redirect_uri: process.env.AO_REDIRECT_URI
})
});
const tokenJson = await tokenResp.json();
<b>//</b> tokenJson should include access_token and refresh_token
const userId = tokenJson.resource_owner_id || 'user-id-placeholder';
tokenStore.set(userId, tokenJson);
res.send('OK');
});
<b>//</b> Proxy endpoint the OpenClaw skill can call to perform searches
app.post('/proxy/search', async (req, res) => {
const { userId, q } = req.body;
const tokens = tokenStore.get(userId);
if (!tokens) return res.status(401).json({ error: 'no_tokens' });
<b>//</b> Call Answer Overflow API with the access token
const r = await fetch(`https://api.answeroverflow.example/v1/search?q=${encodeURIComponent(q)}`, {
headers: { Authorization: `Bearer ${tokens.access_token}` }
});
const body = await r.json();
if (r.status === 401) {
<b>//</b> In production: refresh token and retry
}
res.status(r.status).json(body);
});
app.listen(8080, () => console.log('Adapter listening on 8080'));
<b>//</b> curl example using API key
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://api.answeroverflow.example/v1/search?q=how+to+integrate+openclaw"
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1
Put the Answer Overflow credentials into the connector by storing them as secure environment variables (for example ANSWER_OVERFLOW_API_KEY and ANSWER_OVERFLOW_API_SECRET), referencing those vars in the OpenClaw connector settings, setting the connector’s Base URL and Authorization header (e.g. Bearer token), and then run a test request to verify authentication.
<b>//</b> Read key from env and send auth header
const res = await fetch(process.env.ANSWER_OVERFLOW_BASE + '/v1/ping', {
method: 'GET',
headers: { Authorization: `Bearer ${process.env.ANSWER_OVERFLOW_API_KEY}` }
});
2
Verify Answer Overflow webhook integrity by computing a signature over the raw request body with your webhook secret, comparing it to the signature header sent by OpenClaw (see the product docs for the exact header and algorithm), and rejecting requests that fail verification or are outside an allowed time window. Use a constant-time comparison and log failures.
Follow these practical checks:
3
Map each Answer Overflow field to the OpenClaw session/event properties by aligning identity (who), temporal (when), routing (ids/parent), payload (text/structured content), metadata (tags/labels), and attachments. Ensure every message becomes an event object the runtime recognizes, authenticated and timestamped, so conversation state updates atomically.
// map AnswerOverflow payload to OpenClaw event
function mapPayload(p){
return {
// // identifiers
messageId: p.id,
parentId: p.parent_id,
// // actor and text
author: p.sender_role,
content: p.text,
contentType: p.mime || 'text/plain',
// // metadata and time
metadata: p.meta || {},
timestamp: p.timestamp || Date.now(),
attachments: p.files || []
};
}
4
Handle 429 "Answer Overflow" in request middleware by detecting 429 responses, honoring a Retry-After header if present, and performing retries with exponential backoff + jitter, capped retries, idempotency checks, and logging. Stop retrying when non-idempotent or when max attempts reached.
// Simple fetch middleware wrapper
export function withRetry(fetchFn, {maxRetries=5, baseMs=500, maxMs=10000}={}) {
return async function retryFetch(input, init) {
for (let attempt=0;; attempt++) {
const res = await fetchFn(input, init);
if (res.status !== 429) return res;
if (attempt>=maxRetries) return res;
const ra = res.headers.get('Retry-After');
const serverDelay = ra ? parseInt(ra,10)*1000 : null;
const backoff = Math.min(maxMs, baseMs*(2**attempt));
const jitter = Math.floor(Math.random()*baseMs);
const wait = serverDelay ?? (backoff + jitter);
// // sleep
await new Promise(r=>setTimeout(r, wait));
}
}
}
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