v0.4.6

What's Changed

• feat: allow inline pipeline in dryrun tool by @sunng87 in #34

Full Changelog: v0.4.4...v0.4.6

v0.4.4

• Try to fix hang on windows platform 5dc1115

v0.4.3

What's Changed

• ci: run on matrix.os by @killme2008 in #33
• fix: unread result found while reusing connections

Full Changelog: v0.4.2...v0.4.3

v0.4.2

What's Changed

• feat: supports allowed_hosts/allowed_origins for DNS rebinding protections by @killme2008 in #32

Full Changelog: v0.4.1...v0.4.2

v0.4.1

• Require mcp >= 1.8.0 for streamable-http transport.

Full Changelog: v0.4.0...v0.4.1

v0.4.0

Features

• HTTP transport modes (sse, streamable-http) for K8s/container deployments.
  Requires mcp>=1.8.0 for streamable-http:

# Streamable HTTP (recommended for production)
greptimedb-mcp-server --transport streamable-http --listen-port 8080

# SSE mode (legacy)
greptimedb-mcp-server --transport sse --listen-port 3000

• Audit logging for all tool invocations
• Graceful shutdown on SIGINT/SIGTERM

Fixed

• TQL start/end parameter format
• SQL injection in TQL parameters

Docs

• Restructured README, added Quick Start
• Extracted LLM instructions to docs/llm-instructions.md

v0.3.1

New Features

Pipeline Management Tools

• create_pipeline - Create new pipelines with YAML configuration
• dryrun_pipeline - Test pipelines with sample data without writing to database
• delete_pipeline - Delete specific versions of a pipeline

Pipeline Creator Prompt Template

• New pipeline_creator prompt template to help LLMs generate GreptimeDB pipeline YAML configurations from log samples. E.g. https://claude.ai/share/4d2146b1-a308-4115-a5e2-c945b2d23b87
• Includes comprehensive guidelines for:
  • Pipeline processors (dissect, regex, date, epoch, gsub, select)
  • Transform configuration and data types
  • Index selection best practices (inverted, fulltext, skipping)
  • Table design recommendations for log tables

HTTPS Support

• Added GREPTIMEDB_HTTP_PROTOCOL environment variable to configure HTTP/HTTPS protocol
• Added --http-protocol CLI argument (choices: http, https, default: http)

Bug Fixes

• Fixed SHOW CREATE TABLE being blocked - Security gate now correctly allows SHOW CREATE TABLE queries by using start-of-line anchoring for DDL patterns
• Fixed prompt template variable rendering - Template variables like {{ pipeline_name }} are now correctly substituted

Improvements

Prompt Templates Updated

All prompt templates now include a References section with links to official GreptimeDB documentation:

Template	Documentation References
pipeline_creator	Pipeline Config, Manage Pipelines, Data Index, Table Design, Logs Overview
log_pipeline	Full-Text Search, Log Query, SQL SELECT, SQL Functions
metrics_analysis	SQL Query, RANGE Query, SQL Functions, CTE, Data Model
promql_analysis	TQL Reference, PromQL Guide, Time Durations
iot_monitoring	Data Model, CREATE TABLE, RANGE Query, SQL Functions, Table Design
trace_analysis	Traces Overview, Traces Data Model, Read/Write Traces, Jaeger Query, Approximate Functions
table_operation	INFORMATION_SCHEMA, CLUSTER_INFO, REGION_PEERS, REGION_STATISTICS, EXPLAIN, SHOW

Template Accuracy Fixes

• trace_analysis: Fixed column names (span_status_code instead of status_code, timestamp instead of ts) and status code values (STATUS_CODE_ERROR instead of ERROR)
• table_operation: Fixed REGION_STATISTICS column name (region_rows instead of num_rows), REGION_PEERS status value (ALIVE instead of READY), and corrected SSTS_MANIFEST/SSTS_INDEX_META
  query syntax

Other Improvements

• Reuse aiohttp.ClientSession for HTTP requests instead of creating new sessions per request
• Added argument name validation for prompt templates (must be valid Python identifiers)
• Improved README documentation with LLM instructions and usage examples

Dependencies

• Added aiohttp for async HTTP client support

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Full Changelog: v0.3.0...v0.3.1

v0.3.0

Release Notes v0.3.0

New Features

Data Masking

• Automatic sensitive data masking for query results
• Built-in patterns for:
  • Authentication: password, token, api_key, secret, credential, etc.
  • Financial: credit_card, cvv, bank_account, iban, etc.
  • Personal: ssn, passport, id_card, etc.
• Configurable via GREPTIMEDB_MASK_ENABLED and GREPTIMEDB_MASK_PATTERNS
• Masked values appear as ****** in all output formats

New Tools

Tool	Description
execute_tql	Execute TQL (PromQL-compatible) queries
query_range	Execute RANGE/ALIGN aggregation queries
explain_query	Analyze SQL or TQL query execution plans

New Prompt Templates

Template	Description
iot_monitoring	IoT device monitoring and analysis
log_pipeline	Log data analysis with full-text search
trace_analysis	Distributed tracing analysis
promql_analysis	PromQL/TQL query guidance

Output Format Support

• All query tools now support csv, json, and markdown output formats

Improvements

• Migrated to FastMCP
• Fixed CTE (Common Table Expression) query support in security gate
• Enhanced security gate with better injection prevention
• Improved prompt templates with correct GreptimeDB SQL syntax
• Code refactoring: split formatter and masking into separate modules

Breaking Changes

None

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Full Changelog: v0.2.2...v0.3.0

v0.2.2

What's Changed

• feat: supports time zone settings by @killme2008 in #16
• feat: call_tool supports show, tql_eval, desc table and explain etc. by @killme2008 #16
• feat: add more security checking by @killme2008 in #17

Full Changelog: v0.2.1...v0.2.2

v0.2.1

What's Changed

• fix: tempaltes directory not found after building by @killme2008 in #15

Full Changelog: v0.2.0...v0.2.1