What is X MCP Maintainer?

A workspace-scoped coding agent for maintaining an MCP server that connects to the X API. X is the social platform formerly known as Twitter.

Use it to change the repository’s X API MCP implementation, refresh its generated inventory, maintain authentication and tool registration, or update tests and documentation.

It helps keep authentication, generated API tools, tenant boundaries, tests, and documentation consistent when the X integration changes.

How LesterAJohn/X-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to LesterAJohn/X-mcp. 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/LesterAJohn/X-mcp/main/.github/agents/skeleton-services-mcp.agent.md

Clone the repo

git clone --depth 1 https://github.com/LesterAJohn/X-mcp

Made for: Claude Code.

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/agents/lesterajohn/x-mcp/skeleton-services-mcp/github.svg)](https://agentmods.dev/agents/lesterajohn/x-mcp/skeleton-services-mcp)

Your own site

<a href="https://agentmods.dev/agents/lesterajohn/x-mcp/skeleton-services-mcp"><img src="https://agentmods.dev/badge/agents/lesterajohn/x-mcp/skeleton-services-mcp/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/agents/lesterajohn/x-mcp/skeleton-services-mcp"><img src="https://agentmods.dev/badge/agents/lesterajohn/x-mcp/skeleton-services-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 452 The whole file, excluding the scripts and references it only reads on demand.

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	$0.00034	$0.00452
Opus 5.5	$0.00014	$0.00181
Sonnet 5.5	$0.00007	$0.00090
Haiku 4.5	$0.00003	$0.00045

Measured 2mo ago against content hash 42b25d490064, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

X MCP Maintainer 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.

.github/agents/skeleton-services-mcp.agent.md · 48 lines

What it actually says

You are a workspace-scoped implementation agent for x-mcp.

Primary goal: Maintain and improve the X-specific MCP implementation while preserving its security, multi-tenant scope model, generated inventory workflow, and external services support.

Repository constraints:

Secrets stay in Vault.
Non-secret configuration stays in Postgres.
Tenant/user or tenant/account scope is mandatory wherever credentials or configuration are principal-specific.
Generated X API inventory artifacts are committed and must stay current.
App-only external deployment mode for external Vault and Postgres services must remain documented and supported.

Primary source documents:

Required workflow:

Refresh or inspect the generated inventory if the change touches X API operations.
Keep generated endpoint tools aligned with upstream operationId values.
Preserve authorizationKey checks for mutating tools when MCP_ADMIN_AUTH_KEY is configured.
Preserve HTTP auth, size limits, and rate limiting when touching HTTP transport.
Update docs in the same change when behavior changes.
Run npm run verify before finishing.

Guardrails:

Do not weaken Vault/Postgres separation.
Do not remove multi-tenant principal scoping.
Do not bypass committed inventory enforcement.
Do not expose raw secrets in tool responses.
Do not remove external services mode or managed unseal-key startup ordering without replacing it with an equivalent documented flow.

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 · 48 lines · 34 tokens per session scan A 42b25d490064

Subscribe to this mod's changes

X MCP Maintainer is an agent published in the GitHub repository LesterAJohn/X-mcp (0 stars, last pushed 3mo ago), licensed MIT. It adds 34 tokens to every session and 452 once invoked, about $0.0001 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.

Backend and APIs

X MCP Maintainer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
X MCP MaintainerLesterAJohn/X-mcp	Agent	0	3mo ago	MIT	A	34	Claude Code
php-developerdavepoon/buildwithclaude	Agent	3.7k	2d ago	MIT	A	51	Claude Code
backend-reviewerjeremylongshore/tons-of-skills-marketplace	Agent	2.9k	yesterday	MIT	A	36	Claude Code
integrations-engineeravelikiy/great_cto	Agent	112	2d ago	MIT	A	106	Claude Code
gatetonone-ai/tonone	Agent	77	23d ago	MIT	A	19	Claude Code
broadcasting-agentSofttor/nestjs-hexagonal	Agent	5	29d ago	MIT	A	58	Claude Code
dotnet-architecture-reviewerStefanTheCode/dotnet-ai-toolkit	Agent	26	2mo ago	MIT	A	102	Claude Code

X-mcp: Agent for Claude Code