> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Stable methods

> Complete reference of Stable JSON-RPC methods supported on Chainstack, with per-method availability for the eth, debug, txpool, net, and web3 namespaces. The trace namespace is not served.

Our pricing is simple: 1 RU per full request, 2 RUs per archive. For which EVM methods are full vs archive, see [Request units — EVM methods affected by block age](/docs/request-units#evm-methods-affected-by-block-age).

Stable is an EVM-compatible layer 1. Chain ID is `988`. Chainstack nodes run the `stabled` client, which is built on the Cosmos SDK and serves an Ethereum-compatible JSON-RPC surface on top of it. The availability below applies to Stable Mainnet on Global Nodes.

## The trace namespace is not served

<Warning>
  Stable serves `debug_*` but not `trace_*`. All nine Parity-style trace methods return `-32601`: `trace_block`, `trace_transaction`, `trace_call`, `trace_callMany`, `trace_filter`, `trace_get`, `trace_rawTransaction`, `trace_replayBlockTransactions`, and `trace_replayTransaction`.

  If you are porting code from Ethereum, Arc, or World Chain, swap the calls before you deploy:

  | Instead of | Use |
  | - | - |
  | `trace_block` | `debug_traceBlockByNumber` with `{"tracer": "callTracer"}` |
  | `trace_transaction` | `debug_traceTransaction` with `{"tracer": "callTracer"}` |
  | `trace_call` | `debug_traceCall` with `{"tracer": "callTracer"}` |
</Warning>

`rpc_modules` is available on Stable and reports the served namespaces accurately: `debug`, `eth`, `net`, `rpc`, `txpool`, and `web3`.

The available tracing methods are `debug_traceTransaction`, `debug_traceBlockByNumber`, `debug_traceBlockByHash`, and `debug_traceCall`, all of which need a [paid plan](https://chainstack.com/pricing/) — see [Debug and trace APIs](/docs/debug-and-trace-apis#stable). The native tracers `callTracer`, `prestateTracer`, `4byteTracer`, and `noopTracer` are enabled; `flatCallTracer` and `muxTracer` are not — see [Available native tracers](/docs/limits#available-native-tracers).

## Pending transactions are accepted but never delivered

`txpool_status` responds on Stable, but it always reports an empty pool. Across 30 samples taken every 4 seconds over two minutes, `txpool_status` returned `pending: 0x0, queued: 0x0` every time, while 52 transactions confirmed in new blocks over the same window. The pool is not exposed through the EVM JSON-RPC layer. `txpool_content`, `txpool_contentFrom`, and `txpool_inspect` return `-32601`, because Global Nodes and Trader Nodes do not serve them on any EVM chain.

`eth_newPendingTransactionFilter` and `eth_subscribe("newPendingTransactions")` both hand back an ID and then deliver nothing. Do not build a pending-transaction feed on Stable. See [What gives you mempool access](/docs/mempool-configuration#what-gives-you-mempool-access).

## Filters on a load-balanced endpoint

A [Global Node](/docs/global-elastic-node) endpoint is load balanced across backends, and a filter created by `eth_newFilter` or `eth_newBlockFilter` lives on the single backend that created it. A follow-up `eth_getFilterChanges` that lands on a different backend returns `-32000 filter not found`. Poll with [eth\_getLogs](/reference/ethereum-getlogs) over an explicit block range instead, or use a WSS subscription, which holds one connection to one backend for its lifetime.

## Cosmos SDK behavior to expect

The Cosmos SDK foundation shows through in three places:

* `eth_getProof` returns a Cosmos IAVL proof, not an Ethereum Merkle-Patricia proof, so it is not a drop-in for Ethereum state-proof verification. It also needs an explicit block number — passing `latest` returns `-32000 proof queries at height <= 2 are not supported`.
* `debug_printBlock` and `debug_intermediateRoots` return `-32000 profiling disabled in the debug namespace`.
* `eth_createAccessList` returns `-32603 method handler crashed` for every request shape tested. Since Stable charges a flat base fee, an access list buys you nothing here anyway.

`eth_simulateV1` is not implemented. `eth_blobBaseFee` is not either — Stable takes no blob transactions.

## Block time and archive billing

Stable produces a block roughly every 0.7 seconds. The standard EVM rule — 127 or more blocks behind the tip bills as archive — therefore covers only about 90 seconds of history, against roughly 25 minutes on Ethereum. On Stable, expect most historical queries to bill as archive.

## Method availability

| Method | Availability | Comment |
| - | - | - |
| debug\_accountRange | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_chaindbProperty | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_codeByHash | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_dumpBlock | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getAccessibleState | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getBadBlocks | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getModifiedAccountsByHash | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getModifiedAccountsByNumber | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getRawBlock | <Icon icon="square-check" iconType="solid" /> | |
| debug\_getRawHeader | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getRawReceipts | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getRawTransaction | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_getTrieFlushInterval | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_intermediateRoots | <Icon icon="xmark" iconType="solid" /> | returns `-32000 profiling disabled in the debug namespace` |
| debug\_preimage | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_printBlock | <Icon icon="xmark" iconType="solid" /> | returns `-32000 profiling disabled in the debug namespace` |
| debug\_storageRangeAt | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_traceBadBlock | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| debug\_traceBlock | <Icon icon="square-check" iconType="solid" /> | takes an RLP-encoded block |
| debug\_traceBlockByHash | <Icon icon="square-check" iconType="solid" /> | |
| debug\_traceBlockByNumber | <Icon icon="square-check" iconType="solid" /> | |
| debug\_traceCall | <Icon icon="square-check" iconType="solid" /> | |
| debug\_traceTransaction | <Icon icon="square-check" iconType="solid" /> | |
| eth\_accounts | <Icon icon="square-check" iconType="solid" /> | returns an empty array — no unlocked accounts on a hosted node |
| eth\_blobBaseFee | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_blockNumber | <Icon icon="square-check" iconType="solid" /> | |
| eth\_call | <Icon icon="square-check" iconType="solid" /> | |
| eth\_chainId | <Icon icon="square-check" iconType="solid" /> | |
| eth\_coinbase | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_createAccessList | <Icon icon="xmark" iconType="solid" /> | returns `-32603 method handler crashed` for every request shape tested |
| eth\_estimateGas | <Icon icon="square-check" iconType="solid" /> | |
| eth\_feeHistory | <Icon icon="square-check" iconType="solid" /> | |
| eth\_gasPrice | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getAccount | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_getBalance | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getBlockByHash | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getBlockByNumber | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getBlockReceipts | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getBlockTransactionCountByHash | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getBlockTransactionCountByNumber | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getCode | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getFilterChanges | <Icon icon="square-check" iconType="solid" /> | filters are node-local — see [Filters on a load-balanced endpoint](#filters-on-a-load-balanced-endpoint) |
| eth\_getFilterLogs | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getHeaderByHash | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getHeaderByNumber | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getLogs | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getProof | <Icon icon="square-check" iconType="solid" /> | pass an explicit block number — `latest` returns `-32000 proof queries at height <= 2 are not supported`. The proof is a Cosmos IAVL proof, not an Ethereum Merkle-Patricia proof |
| eth\_getRawTransactionByHash | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_getStorageAt | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getTransactionByBlockHashAndIndex | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getTransactionByBlockNumberAndIndex | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getTransactionByHash | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getTransactionBySenderAndNonce | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_getTransactionCount | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getTransactionReceipt | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getUncleByBlockHashAndIndex | <Icon icon="square-check" iconType="solid" /> | always null — Stable has no uncles |
| eth\_getUncleByBlockNumberAndIndex | <Icon icon="square-check" iconType="solid" /> | always null — Stable has no uncles |
| eth\_getUncleCountByBlockHash | <Icon icon="square-check" iconType="solid" /> | |
| eth\_getUncleCountByBlockNumber | <Icon icon="square-check" iconType="solid" /> | |
| eth\_hashrate | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_maxPriorityFeePerGas | <Icon icon="square-check" iconType="solid" /> | |
| eth\_mining | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_newBlockFilter | <Icon icon="square-check" iconType="solid" /> | |
| eth\_newFilter | <Icon icon="square-check" iconType="solid" /> | |
| eth\_newPendingTransactionFilter | <Icon icon="square-check" iconType="solid" /> | accepts the filter but never returns a transaction — see [Pending transactions](#pending-transactions-are-accepted-but-never-delivered) |
| eth\_protocolVersion | <Icon icon="square-check" iconType="solid" /> | |
| eth\_sendRawTransaction | <Icon icon="square-check" iconType="solid" /> | |
| eth\_sendRawTransactionSync | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_simulateV1 | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| eth\_subscribe | <Icon icon="square-check" iconType="solid" /> | WSS. `newHeads` and `logs` deliver. `newPendingTransactions` subscribes but delivers nothing; `syncing` returns `-32600 syncing subscription is not implemented` |
| eth\_syncing | <Icon icon="square-check" iconType="solid" /> | |
| eth\_uninstallFilter | <Icon icon="square-check" iconType="solid" /> | |
| eth\_unsubscribe | <Icon icon="square-check" iconType="solid" /> | WSS |
| net\_listening | <Icon icon="square-check" iconType="solid" /> | |
| net\_peerCount | <Icon icon="square-check" iconType="solid" /> | |
| net\_version | <Icon icon="square-check" iconType="solid" /> | |
| rpc\_modules | <Icon icon="square-check" iconType="solid" /> | |
| trace\_block | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_call | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_callMany | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_filter | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_get | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_rawTransaction | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_replayBlockTransactions | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_replayTransaction | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| trace\_transaction | <Icon icon="xmark" iconType="solid" /> | returns `-32601` |
| txpool\_content | <Icon icon="xmark" iconType="solid" /> | not available on Global Nodes and Trader Nodes — see [What gives you mempool access](/docs/mempool-configuration#what-gives-you-mempool-access) |
| txpool\_contentFrom | <Icon icon="xmark" iconType="solid" /> | not available on Global Nodes and Trader Nodes |
| txpool\_inspect | <Icon icon="xmark" iconType="solid" /> | not available on Global Nodes and Trader Nodes |
| txpool\_status | <Icon icon="square-check" iconType="solid" /> | responds, but the pool always reads empty |
| web3\_clientVersion | <Icon icon="square-check" iconType="solid" /> | |
| web3\_sha3 | <Icon icon="square-check" iconType="solid" /> | |