finos-mcp-core
The shared safety layer for the finos-mcp servers
(finos-mcp-aigf,
finos-mcp-cdm,
finos-mcp-fdc3): read-only
MCP servers for FINOS data standards. You normally get it as
a dependency of one of those rather than installing it directly.
Not affiliated with or endorsed by FINOS. This is an independent, community package. On PyPI the finos- prefix is also used by official FINOS packages such as finos-cdm; this is not one of them.
What it enforces
- Read-only, no override. A tool can only be registered with
readOnlyHint: true; the server refuses to servetools/*if any tool lacks it. - Rate limits. Token bucket per client and tool; exhaustion is a JSON-RPC error (
-32029,rate_limited) withretry_after_s. - Size caps. Oversized arguments are rejected before the tool runs (
input_too_large); oversized results are replaced withoutput_too_large. - Structured errors.
not_found,ambiguous_id(with candidates),invalid_input,validation_failed,unsupported_format. - Audit log. One JSON line per request to stderr or
FINOS_MCP_AUDIT_PATH, with a sha256 of the arguments rather than the arguments themselves.
Policy can only be tightened from the environment (FINOS_MCP_MAX_INPUT_BYTES,
FINOS_MCP_RATE_CALLS, FINOS_MCP_RATE_WINDOW_S, FINOS_MCP_RATE_BURST). The semantic
extra adds hybrid BM25 + static-embedding search; without it, nothing makes a network call.
Docs: https://vardhjain.github.io/finos-mcp/ · Source: https://github.com/vardhjain/finos-mcp · Changelog: https://github.com/vardhjain/finos-mcp/blob/main/CHANGELOG.md
Licence
Code is Apache-2.0.
1 maintainer
Metadata
1 maintainer
Release files for finos-mcp-core 0.3.1
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