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How to integrate Supermemory with OpenClaw

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How to integrate Supermemory with OpenClaw

Integrate Supermemory by building a ClawHub skill that calls Supermemory’s REST API (authenticated via OAuth or API keys you provision), host any webhooks and persistent storage outside the agent runtime, register and store credentials in ClawHub’s secret/config area, and verify every request and callback with signatures and proper scopes; test end-to-end by exercising login/token exchange, making authenticated API calls from the skill, and validating webhook deliveries and logs.

 

Overview — what you will build

 
  • Skill in ClawHub: a lightweight skill that performs intents (read/write) by calling Supermemory’s APIs.
  • Authentication: OAuth 2.0 (recommended) or API-key flow configured as secrets in ClawHub.
  • External services: a small web service to accept webhooks, persist state, and refresh tokens — these run outside the agent.
  • Security and observability: validate webhooks signatures, scope-check tokens, log requests/responses, and implement retries and backoff for transient errors.

 

Architecture and responsibilities

 
  • Agent/skill: executes logic, calls Supermemory APIs, and returns results. Treat the agent runtime as ephemeral — do not store long-lived secrets or heavy state in the runtime.
  • External web service: handles OAuth redirects (authorization code callback), persists refresh tokens, accepts webhooks from Supermemory, and exposes endpoints the skill can query for state or events.
  • ClawHub: where you register/install the skill and store configuration values (API keys, OAuth client ID/secret, webhook secret) so the runtime can read them securely when executing.

 

Authentication and credentials

 
  • Prefer OAuth 2.0 (authorization code with refresh token) when Supermemory supports it. This gives least privilege via scopes and allows token refresh without user interaction.
  • If OAuth is not available, use API keys with careful scoping and rotation policies.
  • Store credentials in ClawHub’s secrets/config mechanism (or equivalent): keep client secrets out of source code and inject them into the runtime environment for the skill.
  • Ensure the skill requests only the scopes needed for the intended actions (read, write, search, etc.). Verify the granted scopes after the token exchange.

 

Concrete integration steps

 
  • 1) Design the flow: Decide which operations the skill exposes (e.g., fetch memory, create memory, search). Map each operation to one or more Supermemory HTTP API calls.
  • 2) Build an external OAuth callback / token store: Implement a small web app that:
    • Initiates the OAuth flow by redirecting users to Supermemory’s authorize URL.
    • Receives the authorization code at a callback URL you control.
    • Exchanges the code for access + refresh tokens and persists them securely (database or secret store).
  • 3) Register and configure the skill in ClawHub: Provide the skill code and set environment variables or secrets referencing your OAuth client ID/secret or API key. Provide the skill with the URL of your token store/webhook endpoint.
  • 4) Implement skill code: The skill should:
    • Obtain the current access token by calling your token store service (server-to-server) or reading a secret (if short-lived tokens are not required).
    • Call Supermemory’s REST endpoints with the Bearer token or API key.
    • Handle HTTP errors (401 → token refresh, 429 → retry with backoff, 5xx → retry with backoff).
  • 5) Implement webhooks externally: Expose an HTTPS endpoint to which Supermemory will post events. Validate each event’s signature using a shared secret so the skill can rely on event authenticity.
  • 6) Test thoroughly: Token exchange, API calls, webhook deliveries, permission errors, token expirations, and error/retry behaviors.

 

Runtime vs external: what must live outside the agent

 
  • Persisted tokens and user state (database or secure secret store) — because agent processes are ephemeral.
  • Webhook receivers and any URL that Supermemory must call back — these need stable, publicly reachable endpoints with TLS.
  • Long-running background jobs or schedules (e.g., periodic sync) — use external schedulers or serverless functions.
  • Large-scale queues or rate-limited workers — use a durable queue (e.g., SQS, Pub/Sub) and workers outside the agent for reliability.

 

REST examples (generic, real requests)

 

OAuth token exchange (server-side):

# <b>//</b> Exchange authorization code for tokens (generic)
curl -X POST "https://supermemory.example.com/oauth/token" \
  -d "grant_type=authorization_code" \
  -d "code=AUTH_CODE_HERE" \
  -d "redirect_uri=https://your-callback.example.com/callback" \
  -u "CLIENT_ID:CLIENT_SECRET"

Authenticated API call from the skill (GET memory):

# <b>//</b> Fetch a memory resource using a bearer token (generic)
curl -H "Authorization: Bearer $ACCESS_TOKEN" \
     -H "Accept: application/json" \
     "https://api.supermemory.example.com/v1/memories/12345"

Webhook receiver (Node + Express) — validate HMAC header:

// <b>//</b> Run with: node webhook.js
const express = require('express');
const crypto = require('crypto');
const app = express();

app.use(express.raw({ type: '*/*' })); // <b>//</b> raw needed for signature check

const WEBHOOK_SECRET = process.env.WEBHOOK_SECRET; // stored in your secret store

function verifySignature(rawBody, signatureHeader) {
  const expected = crypto
    .createHmac('sha256', WEBHOOK_SECRET)
    .update(rawBody)
    .digest('hex');
  return signatureHeader === `sha256=${expected}`;
}

app.post('/webhook', (req, res) => {
  const sig = req.get('x-supermemory-signature'); // <b>//</b> vendor-specific header name
  if (!verifySignature(req.body, sig)) {
    return res.status(401).send('invalid signature');
  }
  // <b>//</b> process payload (JSON.parse if needed)
  res.status(200).send('ok');
});

app.listen(3000);

Token refresh (server-side) example:

# <b>//</b> Refresh access token using stored refresh token
curl -X POST "https://supermemory.example.com/oauth/token" \
  -d "grant_type=refresh_token" \
  -d "refresh_token=$REFRESH_TOKEN" \
  -u "CLIENT_ID:CLIENT_SECRET"

 

Security best-practices

 
  • Always use HTTPS for all endpoints (skill → Supermemory, Supermemory → webhook, user → auth redirect).
  • Validate webhook signatures; do not naively trust incoming events.
  • Store client secrets and refresh tokens in a secrets manager, not in code or checked-in config.
  • Limit OAuth scopes and rotate keys periodically.
  • Return precise error messages in logs, but avoid leaking secrets in logs or error responses.

 

Testing and debugging checklist

 
  • Confirm OAuth flow end-to-end: authorize URL → user grants → callback receives code → token exchange succeeds and tokens are stored.
  • Exercise API calls from the skill and inspect HTTP status codes and bodies.
  • Simulate token expiry and verify that refresh works and new tokens are persisted.
  • Trigger webhook deliveries from Supermemory (or replay signed test messages) and verify signature validation and handling code paths.
  • Check logs in ClawHub for skill runtime execution and your external service logs for token exchanges and webhook receipts.
  • On failure, capture request/response payloads (sanitized) and timestamps to correlate logs across components.

 

Production considerations

 
  • Implement exponential backoff and jitter for retries (handle 429 and 5xx codes).
  • Use idempotency keys if Supermemory supports them for safe retries on create requests.
  • Monitor rate limits and surface quota usage so the skill degrades gracefully rather than failing hard.
  • Design your data model so the agent can call your external store for persistent context; keep the skill logic small and stateless.
  • Use robust observability: structured logs, correlation IDs propagated across calls, and alerting on auth failures or high error rates.

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Troubleshooting Supermemory and OpenClaw Integration

1

Why does the OpenClaw daemon crash with SIGSEGV when Supermemory is enabled as the memory backend?

Direct answer: Enabling Supermemory causes the OpenClaw daemon to SIGSEGV because the native memory backend is being loaded or used with an incompatible binary/ABI, missing or incorrect initialization, or unsafe concurrent access — any of which yields an invalid pointer or bad mmap inside the daemon.

 

Why this happens

 

Common root causes

  • ABI/version mismatch between the Supermemory shared lib and the daemon.
  • Missing init/config so the backend returns NULL or frees memory prematurely.
  • Race or thread-safety in the backend causing corruption under agent threads.
  • Permission/mmap failures (SELinux, file permissions, 32v64 mismatch).

 

How to diagnose

 
  • Check daemon logs and core dumps: coredumpctl gdb // inspect backtrace
  • Verify libraries: ldd /path/to/supermemory.so // ABI deps
  • Run daemon under strace/sanitizers or a single-threaded config to reproduce.

2

How to resolve unresolved symbol or undefined reference errors for the OpenClaw plugin API after linking Supermemory?

 

Direct answer

 

Linker errors mean the OpenClaw plugin API implementation or its transitive dependencies (like Supermemory) aren’t being linked or exported correctly. Fix by adding the API library to your link line (and after libraries that depend on it), ensuring symbols are exported (C vs C++ name mangling), matching compiler ABIs, and verifying runtime loader paths.

  • Link flags: add the plugin API library and Supermemory in correct order (e.g. -L/path -lapi -lsupermemory).
  • ABI/mangling: export C symbols for plugin entry:
extern "C" void plugin_register(void* ctx) { /* // registration code */ }
  • Debug: use nm/readelf/objdump to inspect symbols, set LD_LIBRARY_PATH or rpath, and add -fvisibility=default or -Wl,--no-as-needed if needed.

3

Why does OpenClaw report "incompatible API version" or refuse to load the Supermemory plugin after an upgrade?

Direct answer: OpenClaw reports "incompatible API version" or refuses the Supermemory plugin because the plugin’s declared API/manifest version no longer matches the runtime’s supported plugin API after the upgrade; the runtime enforces compatibility to avoid silent failures.

 

Why this happens and how to fix it

 

After an upgrade the runtime may require newer plugin interfaces, permissions, or configuration fields.

  • Check compatibility: compare the runtime’s supported plugin API version against the plugin manifest/version.
  • Upgrade or rebuild: install the matching plugin release or rebuild it against the new SDK.
  • Config & permissions: verify required env vars, scopes, and manifests are present.
  • Inspect logs: runtime load errors usually state the expected vs provided version.

4

How to configure OpenClaw memory-backend and mmap settings to avoid overlapping shared memory regions with Supermemory?

 

Direct answer

 

Use a file-backed mmap for OpenClaw’s memory-backend, avoid MAP_FIXED, and coordinate base-address choices with Supermemory via deployment-level configuration (environment variables or startup flags). Ensure each service gets a unique backing-file or offset so the kernel places regions non‑overlapping.

 

Details

 

  • File-backed mappings: prefer a unique file in a controlled directory (/dev/shm or app storage) so the kernel assigns different address ranges.
  • Avoid MAP_FIXED: letting the kernel choose prevents accidental collisions; only use fixed addresses when you control both sides.
  • Deployment coordination: expose an env var or config value for a base offset or file name prefix so OpenClaw and Supermemory don’t pick the same name/address.
  • Debugging: inspect /proc/pid/maps and use strace or logs to verify mapping addresses.
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