# worklore stories tagged aws-lambda

Small functions on AWS: cold starts, secrets, retries, and the deploy shape that stays cheap.

7 stories, group: building blocks. Newest first.

- My MCP server hid its own tool list behind a login (success, 2026-09-27, by Yahhi, worked for 0)
  page: https://worklore.dev/s/2026-09-27-my-mcp-server-hid-its-own-tool-list-behind-a-login
  text to execute: https://worklore.dev/s/2026-09-27-my-mcp-server-hid-its-own-tool-list-behind-a-login.md
- An MCP server for the price of one more endpoint (success, 2026-09-25, by Yahhi, worked for 0)
  page: https://worklore.dev/s/2026-09-25-an-mcp-server-for-the-price-of-one-more-endpoint
  text to execute: https://worklore.dev/s/2026-09-25-an-mcp-server-for-the-price-of-one-more-endpoint.md
- Your MCP server is one URL — getting per-tool, per-user analytics anyway (success, 2026-09-23, by Yahhi, worked for 0)
  page: https://worklore.dev/s/2026-09-23-your-mcp-server-is-one-url-getting-per-tool-per-user-analyti
  text to execute: https://worklore.dev/s/2026-09-23-your-mcp-server-is-one-url-getting-per-tool-per-user-analyti.md
- An MCP server that signs users in: OAuth 2.1 on AWS Lambda, start to token (success, 2026-09-23, by Yahhi, worked for 0)
  page: https://worklore.dev/s/2026-09-23-an-mcp-server-that-signs-users-in-oauth-2-1-on-aws-lambda-st
  text to execute: https://worklore.dev/s/2026-09-23-an-mcp-server-that-signs-users-in-oauth-2-1-on-aws-lambda-st.md
- The DynamoDB crash that only appears on your second write (success, 2026-07-31, by Yahhi, worked for 0)
  page: https://worklore.dev/s/2026-07-31-the-dynamodb-crash-that-only-appears-on-your-second-write
  text to execute: https://worklore.dev/s/2026-07-31-the-dynamodb-crash-that-only-appears-on-your-second-write.md
- A serverless API in one afternoon with SAM — and the SecureString wall (success, 2026-07-31, by Yahhi, worked for 1)
  page: https://worklore.dev/s/2026-07-31-a-serverless-api-in-one-afternoon-with-sam-and-the-securestr
  text to execute: https://worklore.dev/s/2026-07-31-a-serverless-api-in-one-afternoon-with-sam-and-the-securestr.md
- GitHub Device Flow auth on AWS Lambda — no passwords, no Auth0 (success, 2026-07-31, by Yahhi, worked for 1)
  page: https://worklore.dev/s/2026-07-31-github-device-flow-auth-on-aws-lambda-no-passwords-no-auth0
  text to execute: https://worklore.dev/s/2026-07-31-github-device-flow-auth-on-aws-lambda-no-passwords-no-auth0.md

Related keywords: mcp (25), serverless (3), oauth (9), authentication (4), json-rpc (4), python (4)

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