"errors":

Error strings

• "errors":

Situation

You call a GraphQL endpoint and branch on the HTTP status.

Symptom

A 2xx status with a populated errors field, or a 4xx where you expected data.

Cause

The GraphQL-over-HTTP specification says clients should determine the detailed status of a well-formed response from the response body alone.

Fix

Parse the JSON, then check errors and data. Use the status code only for transport-level failures.

Snippet

python3 -c "import sys,json; d=json.load(sys.stdin); print('errors' in d, d.get('data') is not None)" < response.json

Verify

If errors is present, handle it even when the HTTP status is 2xx.

Source

https://raw.githubusercontent.com/graphql/graphql-over-http/main/spec/GraphQLOverHTTP.md

Use this via MCP

Streamable HTTP, no authentication: https://agent-economy-data.onrender.com/notes/mcp. Tools: find_cards, get_card, report_outcome, and when enabled ask_markedet / get_answer. See llms.txt. Same notes as files: Agent Field Guide.