What is stellarmcp AGENTS.md?

Instructions for connecting to StellarMCP, a read-only service that provides data from the Stellar blockchain, a network for digital assets and payments.

Use them to read Stellar accounts, transactions, payments, market data, asset details, network status, and other blockchain records through a local or web connection.

They give an agent the identity, interfaces, and limits it needs when using this service.

How siriuslattice/stellarmcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to siriuslattice/stellarmcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/siriuslattice/stellarmcp/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/siriuslattice/stellarmcp

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/siriuslattice/stellarmcp/agents-md/github.svg)](https://agentmods.dev/instructions/siriuslattice/stellarmcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/siriuslattice/stellarmcp/agents-md"><img src="https://agentmods.dev/badge/instructions/siriuslattice/stellarmcp/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/siriuslattice/stellarmcp/agents-md"><img src="https://agentmods.dev/badge/instructions/siriuslattice/stellarmcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 888 This file is loaded in full into every session.

When invoked 888 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00888	$0.00888
Opus 5.5	$0.00355	$0.00355
Sonnet 5.5	$0.00178	$0.00178
Haiku 4.5	$0.00089	$0.00089

Measured 2mo ago against content hash 703fb407db04, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

stellarmcp AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — StellarMCP

Agent Identity

Name: StellarMCP
Type: Data Merchant
Version: 0.2.0
Description: Sells Stellar blockchain data to AI agents via x402 micropayments

Capabilities

Reads: Stellar accounts, transactions, payments, DEX orderbooks, trade aggregations, asset metadata, network status, ledger details, effects, offers, operations, liquidity pools, claimable balances, normalized prices, VWAP
Prices: Multi-oracle aggregation (SdexOracle + ReflectorOracle) with median computation and per-source attribution (sources[] in responses)
Transports: stdio, HTTP REST (x402-gated), MCP-over-HTTP at /mcp (StreamableHTTPServerTransport, stateful sessions)
Writes: None (read-only)
Settlement: x402 on Stellar (USDC)

Interfaces

MCP (stdio)

Full Model Context Protocol server with 16 tools. Connect via any MCP client.

{
  "mcpServers": {
    "stellarmcp": {
      "command": "npx",
      "args": ["stellar-mcp-x402"],
      "env": {
        "STELLAR_NETWORK": "testnet"
      }
    }
  }
}

MCP-over-HTTP (remote)

Connect via HTTP at POST /mcp using the MCP StreamableHTTP transport. Stateful sessions via mcp-session-id header.

Example: An MCP client points to http://localhost:4021/mcp instead of stdio. All 16 tools are accessible — same instance as stdio.

HTTP REST (x402-gated)

Each tool exposed as a GET endpoint. Paid endpoints require x402 payment header.

Endpoint	Price	Params
GET /tools/getAccount	$0.001	accountId
GET /tools/getTransactions	$0.001	accountId, limit?
GET /tools/getPayments	$0.001	accountId, limit?
GET /tools/getOrderbook	$0.002	sellingAsset, buyingAsset, limit?
GET /tools/getTradeAggregations	$0.002	baseAsset, counterAsset, resolution?, limit?
GET /tools/getAssetInfo	$0.001	assetCode, assetIssuer?
GET /tools/getNetworkStatus	free	—
GET /tools/getLedger	$0.001	sequence?
GET /tools/getEffects	$0.001	accountId, limit?
GET /tools/getOffers	$0.001	accountId, limit?
GET /tools/getOperations	$0.001	accountId, limit?
GET /tools/getLiquidityPools	$0.002	account?, limit?
GET /tools/getClaimableBalances	$0.001	claimant?, asset?, limit?
GET /tools/getPrice	$0.002	baseAsset, counterAsset
GET /tools/getPriceHistory	$0.002	baseAsset, counterAsset, resolution?, limit?
GET /tools/getVWAP	$0.002	baseAsset, counterAsset, resolution?, limit?
GET /tools/getSorobanTokenInfo	$0.002	contractId, accountId?
GET /pricing	free	—
GET /health	free	—
POST /mcp	free	MCP-over-HTTP JSON-RPC (StreamableHTTPServerTransport)
GET /mcp	free	SSE stream for server-initiated MCP messages
DELETE /mcp	free	Terminate MCP-over-HTTP session

Read the full file on GitHub · 78 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 78 lines · 888 tokens per session scan A 703fb407db04

Subscribe to this mod's changes

stellarmcp AGENTS.md is an instructions file published in the GitHub repository siriuslattice/stellarmcp (0 stars, last pushed 7mo ago), licensed MIT. It adds 888 tokens to every session, about $0.0036 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Web3 and blockchain

stellarmcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
stellarmcp AGENTS.mdsiriuslattice/stellarmcp	Instructions file	0	7mo ago	MIT	A	888	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,685	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

stellarmcp: Instructions file for Codex