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Aether Developer MCP

  • Updated July 10, 2026
  • EvidInvest/aether-developer

aether-developer is a MCP server that hybrid-searches SEC filings, earnings transcripts, and a third-party data marketplace for agent-driven market research.

About

aether-developer is an MCP server that exposes EvidInvest’s Aether hybrid search to coding agents, blending SEC filings, earnings transcripts, and marketplace-sourced datasets in one tool surface. developers validating fintech ideas, investment research assistants, or B2B data products use it during early research instead of bouncing between EDGAR, transcript sites, and ad-hoc CSVs. Install @evidinvest/aether-mcp via npm, configure stdio in Claude Code or Cursor, and either supply AETHER_API_KEY or complete OAuth device flow the first time you connect. The server is intentionally research-weighted: it helps you scope features, cite sources, and compare data vendors before you commit to a full Build stack. Intermediate complexity reflects API key or OAuth setup and interpreting regulated financial content responsibly—not trading execution or portfolio management inside the MCP itself.

  • Hybrid search across SEC filings and earnings transcripts plus a third-party data marketplace
  • npm package @evidinvest/aether-mcp version 0.2.0 with stdio transport
  • Optional AETHER_API_KEY (ak_…) or OAuth 2.0 device flow on first run without a key
  • Developer keys hosted at aether.evidinvest.com/developer/keys
  • GitHub repository EvidInvest/aether-developer for MCP integration details

Aether Developer MCP by the numbers

  • Data as of Aug 10, 2026 (Skillselion catalog sync)
terminal
claude mcp add --env AETHER_API_KEY=YOUR_AETHER_API_KEY aether-developer -- npx -y @evidinvest/aether-mcp

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Package@evidinvest/aether-mcp
TransportSTDIO
AuthNone
Last updatedJuly 10, 2026
RepositoryEvidInvest/aether-developer

What it does

Search SEC filings, earnings call transcripts, and marketplace datasets from the agent while validating a finance or data product idea.

Who is it for?

Best when you're prototyping investment research, due diligence, or data-marketplace apps and already work in MCP-enabled editors.

Skip if: Non-financial SaaS with no disclosure research needs, or developers who want execution, brokerage, or live trading APIs only.

What you get

Your agent queries Aether through MCP and returns blended disclosure and transcript results while you still scope the product.

  • Agent queries returning hybrid hits across filings, transcripts, and marketplace data
  • Repeatable research workflow during idea validation
  • Authenticated Aether access via API key or OAuth device flow

By the numbers

  • MCP server version 0.2.0
  • npm package name @evidinvest/aether-mcp
  • Two auth paths documented: optional AETHER_API_KEY or OAuth 2.0 device flow on first run
README.md

aether-developer

Everything you need to call Aether — the financial-vertical agent search engine — from your own code or your favourite MCP-enabled IDE.

The repo holds two kinds of integration plus the docs that explain them:

  1. MCP wrapper@evidinvest/aether-mcp. Drop it into Claude Desktop, Cursor, Cline, or any stdio-MCP client and you can search SEC filings, earnings transcripts, and EU financial regulation (MiFID II, MiCA, CRR, GDPR, …) from chat.
  2. Client libraries — small typed HTTP clients in TypeScript / Python (and more languages over time). For when you're building your own service instead of using an MCP-aware UI.
aether-developer/
├── docs/                    — how to use Aether for search / via MCP
├── mcp/                     — @evidinvest/aether-mcp (stdio MCP server)
├── clients/
│   ├── typescript/          — @evidinvest/aether-sdk
│   └── python/              — aether-sdk (PyPI)
└── examples/                — runnable demos + config snippets

Quick start

Claude Desktop / Cursor / Cline (MCP)

Add this to your client's MCP-server config:

{
  "mcpServers": {
    "aether": {
      "command": "npx",
      "args": ["-y", "@evidinvest/aether-mcp"]
    }
  }
}

First run prints a device-code URL — open it, sign in, approve. Full guide: docs/mcp.md.

TypeScript / Node

pnpm add @evidinvest/aether-sdk
import { AetherClient } from "@evidinvest/aether-sdk";

const aether = new AetherClient({ apiKey: process.env.AETHER_API_KEY });
const { hits } = await aether.search({ query: "Apple supply-chain risk", limit: 5 });

Full guide: clients/typescript/README.md.

Python

pip install aether-sdk
from aether import AetherClient

with AetherClient(api_key="ak_...") as aether:
    result = aether.search(query="Apple supply-chain risk", limit=5)
    for hit in result.hits:
        print(hit.score, hit.section_title)

Full guide: clients/python/README.md.

Docs

  • docs/search.md — request/response shapes, auth, schemas.
  • docs/regulation_search.md — EU financial-regulation search (MiFID II, MiCA, CRR, GDPR, … — 29 acts), filters, response shape, curl.
  • docs/mcp.md — MCP setup for Claude Desktop, Cursor, Cline, env overrides.

Get an API key

https://aether.evidinvest.com/developer/keys

3 months free. Verify your email when you sign up and you're on the trial tier automatically — up to 5,000 API calls/hour on Aether's search tools, free for 3 months. No card required; it reverts to the free tier (100 calls/hour + paid credits) when the trial ends.

Contribute a client library

The TypeScript and Python clients are intentionally tiny — one bearer-token fetch wrapper + typed shapes for /v1/search. Porting to Go, Rust, Java, etc. should fit in ~150 lines. Open a PR under clients/<lang>/.

License

Apache-2.0 — see LICENSE.

Recommended MCP Servers

How it compares

Regulated-filings research MCP, not a generic web crawl or stock chart widget skill.

FAQ

Who is aether-developer for?

Developers and analysts creating AI workflows around public company disclosures, earnings narrative, and supplementary marketplace data.

When should I use aether-developer?

Use it in Idea research when comparing opportunities, scoping a fintech MVP, or grounding agent answers in SEC and transcript sources.

How do I add aether-developer to my agent?

Add a stdio MCP entry for @evidinvest/aether-mcp, set AETHER_API_KEY if you have one, or run once to complete OAuth device flow, then query from your agent.

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