docs: note archive-node requirement for MATIC_RPC_URL and expand provider list - #71
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akegaviar wants to merge 1 commit into
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docs: note archive-node requirement for MATIC_RPC_URL and expand provider list#71akegaviar wants to merge 1 commit into
akegaviar wants to merge 1 commit into
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…ider list Graph Node indexes from each subgraph's startBlock (some from 2020) and issues historical eth_call requests while indexing (e.g. ERC-20 metadata reads in fpmm-subgraph), which full/pruned nodes can't serve. Clarify that an archive node is needed, note the value is the full https:// URL and where it is consumed in docker-compose.yml, and round out the provider list.
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The Environment Variables section says
MATIC_RPC_URLcan be any Polygon RPC, but Graph Node indexes from each subgraph'sstartBlock(some from 2020) and issues historicaleth_calls during indexing — e.g. the ERC-20 metadata reads infpmm-subgraph(try_name/try_symbol/try_decimals). Full/pruned nodes can't serve those, which surfaces as hard-to-diagnose indexing failures.This PR:
https://URL and points to where it's consumed (ethereum: 'matic:${MATIC_RPC_URL}'indocker-compose.yml).Docs-only; no code changes.
Note
Low Risk
Documentation-only; no runtime, config template, or subgraph logic changes.
Overview
README Environment Variables section is expanded so operators set up Polygon RPC correctly for local Graph Node.
The
.envexample now shows a fullhttps://URL placeholder instead of an empty value. New copy explains thatMATIC_RPC_URLmust be the complete Polygon mainnet endpoint and how it is wired into Graph Node (ethereum: 'matic:${MATIC_RPC_URL}'indocker-compose.yml).The doc now states that an archive node is required (historical replay from early
startBlocks and historicaleth_calls during indexing), and lists example providers: Alchemy, Chainstack, Infura, and QuickNode.Reviewed by Cursor Bugbot for commit 69c068f. Bugbot is set up for automated code reviews on this repo. Configure here.