MCP, MCP server
Maverick Mcp
Stock market MCP server for Yahoo Finance data, technical analysis, portfolio tracking, and Python backtesting.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit da70d074dcda.
NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV PERMISSION_SHELL_DECLARED OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
maverick/technical/service.py, line 11
`analyze_*` function: an empty fetch (no price history at all) and a "NaN - SECRETS_PATH_DOTENV Low
Mentions a .env file.
evals/tool_surface/agent_server.py, line 8
is outside the repository, so it never loads the repository's `.env`. - PERMISSION_SHELL_DECLARED Note
Runs shell commands, and the manifest or description says so.
evals/tool_surface/agent_trace.py, line 178
sha = subprocess.run( - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
uv.lock, line 1
version = 1 - OBFUSCATION_FILE_CAP_REACHED Note
The 400 file cap was reached before every file was read.
uv.lock, line 1
version = 1
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Note
requests shell access. The manifest names this permission.
PERMISSION_SHELL_DECLARED
evals/tool_surface/agent_trace.py, line 178
sha = subprocess.run(
docs/exec-plans/completed/2026-07-19-phase-2-market-data-domain.md, line 94
result = subprocess.run(
tools/check_docs_catalog.py, line 57
result = subprocess.run(
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
maverick/technical/service.py, line 11
`analyze_*` function: an empty fetch (no price history at all) and a "NaN
docs/exec-plans/active/2026-09-05-open-items-remediation.md, line 2202
schema = json.loads(urllib.request.urlopen(data["$schema"]).read())
docs/generated/registry/pulsemcp.md, line 20
**Status: mechanism not confirmed.** Web search and fetch (July 2026) found
Show more
docs/runbooks/releasing.md, line 272
schema = json.loads(urllib.request.urlopen(data["$schema"]).read())
evals/review/app.html, line 319
const res = await fetch(url, { cache: 'no-store' });
evals/review/app.html, line 397
const res = await fetch('/api/annotations', {
evals/review/app.html, line 1214
const res = await fetch('/api/patterns', { cache: 'no-store' });
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
evals/tool_surface/agent_server.py, line 8
is outside the repository, so it never loads the repository's `.env`.
evals/tool_surface/jev.py, line 3
This is a paid API: it needs `TYPESAFE_API_KEY` (read from the repo's `.env`)
evals/tool_surface/jev.py, line 102
key = dotenv_values(HERE.parents[1] / ".env").get("TYPESAFE_API_KEY")
Show more
evals/tool_surface/jev.py, line 104
print("TYPESAFE_API_KEY is not set in .env", file=sys.stderr)
maverick/server/app.py, line 19
"""Apply the project's `.env` to the process environment.
maverick/server/app.py, line 22
only, so the `.env` has to be applied before anything resolves settings --
maverick/server/app.py, line 26
The search is anchored at the current working directory, so `.env` lookup
maverick/server/app.py, line 32
Anchoring on this file would miss the `.env` whenever the package is
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read. the file cap was reached before every file was read.
OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED
uv.lock, line 1
version = 1
tests/technical/test_tools.py, line 1
"""Tests for maverick.technical.tools."""
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit da70d074dcda. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read. the file cap was reached before every file was read.
Date and source
Date checked:
github.com
Commit graded: da70d074dcdac5fb21e3b2e6383cfebf391f28b5
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