What is the best alternative to SignatureAPI?

The top-rated alternatives to SignatureAPI in the Developer Tools category include Openapi MCP Server, Claude Task Master, MCP Server Docker. These servers offer complementary or alternative capabilities depending on your deployment stack and authentication requirements.

How do SignatureAPI alternatives differ in installation and runtime?

SignatureAPI and its alternatives vary by runtime requirement (Node.js/npx, Python/uvx, Docker, or remote HTTP/SSE endpoints). Check the specification comparison table above to verify command requirements before installing.

Are alternatives to SignatureAPI free and open source?

Most MCP servers listed on AllMCPs are open source tools under MIT or Apache licenses that you can self-host or run locally with Claude Desktop, Cursor, VS Code, or Windsurf.

How do I side-by-side compare SignatureAPI with a specific alternative?

Click the "Compare side-by-side →" button on any alternative card to see an in-depth comparison matrix covering feature lists, stars, npm downloads, install configurations, and schema specifications.

Developer Tools• MCP Alternatives Guide

Best Alternatives to SignatureAPI

Looking for an alternative to SignatureAPI? Whether you need a different runtime environment, custom authentication support, or alternative API integrations in the Developer Tools ecosystem, we have cataloged and compared the top alternative MCP servers below.

Browse all Developer Tools servers →View SignatureAPI Specs →

Target Reference Server

SignatureAPI Overview

E-signature API: send documents for signature, track envelopes, get signed files.

Specification Matrix: SignatureAPI vs Alternatives

Server Name	Runtime	Auth	Pricing	GitHub Stars	Downloads	Action
S SignatureAPI (Target)	—	Free/None	Free	—	—	Current
Openapi MCP Server	Remote (SSE)	No auth required	Free	904	—	Compare →
Claude Task Master	npx	API key	Bring your own API key (usage-based cost)	28,086	—	Compare →
MCP Server Docker	uvx	No auth required	Free	744	—	Compare →
Andrea9293 MCP	npx	No auth required	Free	344	—	Compare →
Amazon Ads MCP	Remote (SSE)	Free/None	Free	70	—	Compare →
Next Devtools MCP	npx	No auth required	Free	824	—	Compare →
UI5 MCP Server	npx	No auth required	Free	100	—	Compare →
Xrpldashboard	Remote (SSE)	Free/None	Free	—	—	Compare →
MCP Graphql	npx	No auth required	Free	408	—	Compare →
Exogram Authority Runtime	npx	Free/None	Free	—	—	Compare →
Docker MCP	uvx	No auth required	Free	503	—	Compare →
Mastercard Developers MCP	npx	Free/None	Free	55	—	Compare →

Detailed Evaluation of SignatureAPI Alternatives

Openapi MCP Server

Runtime: Remote (SSE)

Explore OpenAPI v3 specifications, summarize APIs, and inspect the endpoints needed for a task through MCP.

Key Features:

OpenAPI specification discovery

Plain-language API summaries

Operation-level endpoint details

3 0 904

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Claude Task Master

Runtime: npx

Parses PRDs into structured tasks, expands implementation steps, and manages AI development work across multiple model providers.

Key Features:

PRD parsing

Task expansion

Task dependencies

8 0 28,086

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MCP Server Docker

Runtime: uvx

Manage Docker containers, images, networks, and volumes through MCP tools, prompts, and resource templates.

Key Features:

Natural-language container composition prompt

Container lifecycle management

Image build, pull, push, and removal

3 0 744

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Andrea9293 MCP

Runtime: npx

Local document storage, uploads, hybrid search, context retrieval, and optional Gemini analysis for coding agents.

Key Features:

Local Orama document and vector storage

Hybrid full-text and semantic search

Parent-child document chunking

2 0 344

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Amazon Ads MCP

Runtime: Remote (SSE)

Amazon Ads API MCP server for Amazon Advertising API

2 0 70

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Next Devtools MCP

Runtime: npx

Verified

Connects coding agents to running Next.js 16+ dev servers for runtime errors, routes, logs, docs, and browser automation guidance.

Key Features:

Discovers running Next.js development servers

Proxies runtime errors, routes, logs, and metadata

Resolves Server Action IDs to source files

6 0 824

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UI5 MCP Server

Runtime: npx

UI5 development tools for scaffolding apps, consulting guidance, inspecting projects, and validating UI5 code.

Key Features:

UI5 application scaffolding

UI Integration Card scaffolding

UI5 API and development guidance

2 0 100

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Xrpldashboard

Runtime: Remote (SSE)

Read-only XRP Ledger MCP tools with proof-annotation envelopes and signed daily snapshots.

2 0

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MCP Graphql

Runtime: npx

Connects MCP clients to GraphQL endpoints for schema discovery and query execution, with mutations disabled by default.

Key Features:

GraphQL schema introspection

GraphQL query execution

Schema resource exposure

3 0 408

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Exogram Authority Runtime

Runtime: npx

Model Context Protocol server for the Exogram Authority Runtime.

2 0

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Docker MCP

Runtime: uvx

Manage Docker containers, compose stacks, logs, and status through MCP tools.

Key Features:

Create standalone containers

Deploy Docker Compose stacks

Retrieve container logs

3 0 503

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Mastercard Developers MCP

Runtime: npx

Access Mastercard Developers APIs, documentation, and API specifications through MCP.

2 0 55

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Best Alternatives to SignatureAPI

SignatureAPI Overview

Specification Matrix: SignatureAPI vs Alternatives

Detailed Evaluation of SignatureAPI Alternatives

Frequently Asked Questions: SignatureAPI Alternatives