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MCP troubleshooting

Common MCP integration issues and fixes.

Cannot create a plan

  • Ensure your prompt is detailed (typically ~300-800 words) and includes objective, scope, constraints, timeline, stakeholders, budget/resources, and success criteria.
  • Some topics may be refused by the model (harmful, unethical, or dangerous requests).
  • Try a smaller model or a more reliable paid model.
  • Confirm the MCP server is reachable from your client.

Status never changes

  • Long‑running plans are normal; retry after a few minutes.
  • If it stalls, create a new task and compare behavior.

Download fails

  • Confirm the download URL is reachable from your network.
  • If you run locally, make sure any proxy or base URL is correct.
  • Ensure PLANEXE_PATH is a valid directory and that you have write permissions.

Low‑quality output

  • Increase prompt detail and constraints.
  • Use a stronger model.
  • Avoid “vague” or conflicting requirements.

Quota or billing errors

If you see errors like:

You exceeded your current quota, please check your plan and billing details

Then:

  • Verify your provider has active billing.
  • Check usage limits or rate limits.
  • Try a different model or provider.

Invalid API key (403)

If your MCP client can reach https://mcp.planexe.org/mcp but receives {"detail":"Invalid API key"}:

  • Send only the raw key value (e.g. pex_…), not X-API-Key: pex_….
  • The header should be X-API-Key: <key> or Authorization: Bearer <key>.
  • Verify with curl:
curl -i -H "X-API-Key: pex_your_key_here" https://mcp.planexe.org/mcp/tools
  • For self-hosted deployments: ensure PLANEXE_API_KEY_SECRET matches in both frontend_multi_user (key issuer) and mcp_cloud (key validator). A mismatch causes all pex_… keys to be rejected.