GSA CALC+
PYPI · GSA-CALC-MCP · SCANNED SEP 20
GSA CALC+ awarded labor ceiling rates from more than 230,000 MAS contract records. 8 tools.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- Runs hatchling.build at install time, a recognised native-build step with no shell scripting around it. View diagnostics → Pass
- 1 of 34 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 6 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability63
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1589 tokens (~198/item across 8 items; 8 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management90
- Stability observed for 27 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the GSA CALC+ MCP server?
GSA CALC+ runs locally as a PyPI package, launched with uvx gsa-calc-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
pypi · gsa-calc-mcp
claude mcp add com-1102tools-gsa-calc-mcp -- uvx gsa-calc-mcp
{
"mcpServers": {
"com-1102tools-gsa-calc-mcp": {
"command": "uvx",
"args": [
"gsa-calc-mcp"
]
}
}
} {
"servers": {
"com-1102tools-gsa-calc-mcp": {
"command": "uvx",
"args": [
"gsa-calc-mcp"
]
}
}
} codex mcp add com-1102tools-gsa-calc-mcp -- uvx gsa-calc-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-1102tools-gsa-calc-mcp": {
"type": "local",
"command": [
"uvx",
"gsa-calc-mcp"
],
"enabled": true
}
}
} openclaw mcp add com-1102tools-gsa-calc-mcp --command uvx --arg gsa-calc-mcp
mcp_servers:
com-1102tools-gsa-calc-mcp:
command: "uvx"
args: ["gsa-calc-mcp"] {
"McpServers": {
"com-1102tools-gsa-calc-mcp": {
"Transport": "stdio",
"Command": "uvx",
"Arguments": [
"gsa-calc-mcp"
]
}
}
} assistant mcp add com-1102tools-gsa-calc-mcp -t stdio -c uvx -a gsa-calc-mcp
{
"mcpServers": {
"com-1102tools-gsa-calc-mcp": {
"command": "uvx",
"args": [
"gsa-calc-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.
- 15 Sept 26 +15
- Malware scan: unverified → pass ▲ security
- 14 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Sept 26 −15
- Malware scan: pass → unverified ▼ security
- Package version: 1.0.5 → 1.0.9 functional
- Package version: 1.0.5 → 1.0.8 functional
- Package version: 1.0.5 → 1.0.7 functional
- 12 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.
- 10 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed pypi/gsa-calc-mcp@1.0.9
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | pypi |
Background: How many MCP packages publish verified provenance →
Install scripts 1 script
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | hatchling.build |
Background: Why install scripts are a supply-chain risk →
Dependencies 34 packages
| Packages resolved | 34 |
|---|---|
| No linked repository | 1 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
exact_search ~147
Exact match search on a specific field. Use suggest_contains() first to discover the exact field value, then pass it here. The API requires exact string matching -- partial matches return 0 results. Fields: labor_category, vendor_name, idv_piid (GSA MAS contract number).
| Name | Type | Req | Description |
|---|---|---|---|
| business_size | – | – | – |
| education_level | – | – | – |
| experience_max | – | – | – |
| experience_min | – | – | – |
| field | string | yes | – |
| ordering | string | – | – |
| page | integer | – | – |
| page_size | integer | – | – |
| price_max | – | – | – |
| price_min | – | – | – |
| sort | string | – | – |
| value | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
filtered_browse ~140
Browse rates with filters only (no search keyword). Useful for market segment statistics: "what do all BA-level rates with 5-15 years experience look like across all of GSA MAS?" Returns rate records plus full aggregation statistics.
| Name | Type | Req | Description |
|---|---|---|---|
| business_size | – | – | – |
| education_level | – | – | – |
| experience_max | – | – | – |
| experience_min | – | – | – |
| ordering | string | – | – |
| page | integer | – | – |
| page_size | integer | – | – |
| price_max | – | – | – |
| price_min | – | – | – |
| security_clearance | – | – | – |
| sin | – | – | – |
| sort | string | – | – |
| worksite | – | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
igce_benchmark ~163
Get ceiling rate benchmarks for IGCE development. Returns statistical summary for a labor category: count, min, max, avg, median, standard deviation, percentile distribution (P10-P90), education breakdown, and outlier bounds. This is the primary tool for building Independent Government Cost Estimates. The returned statistics represent the market distribution of GSA MAS ceiling rates for comparable labor categories. Reminder: these are ceiling rates (max a contractor can charge), not prices paid. Actual task order rates should be lower per FAR 8.405-2(d).
| Name | Type | Req | Description |
|---|---|---|---|
| business_size | – | – | – |
| education_level | – | – | – |
| experience_max | – | – | – |
| experience_min | – | – | – |
| labor_category | string | yes | – |
| sin | – | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
keyword_search ~434
Search GSA CALC+ ceiling rates by keyword. Performs wildcard matching across labor_category, vendor_name, and idv_piid fields. This is the primary search tool for finding rates. Returns matching rate records plus aggregation statistics (wage_stats, percentiles, education breakdown, business size) covering the FULL result set even when individual hits are capped at 10,000. Important notes: - These are NTE (not-to-exceed) ceiling rates, not prices paid - Rates are fully burdened hourly rates from GSA MAS contracts - Data refreshes nightly from vendor price proposal tables - Use P50 from percentiles for median (more accurate than median_price) Filter parameters: - education_level: AA, BA, HS, MA, PHD, TEC (pipe-delimited for OR: 'BA|MA') - experience_min/max: years of experience range - price_min/max: hourly rate range in USD - business_size: 'S' (small) or 'O' (other/large) - security_clearance: 'yes' or 'no' - sin: Special Item Number (e.g., '54151S' for IT Professional Services) - worksite: NOT supported (the v3 API silently ignores it; passing a value raises so callers are not handed unfiltered data) ordering: current_price, labor_category, vendor_name, education_level, min_years_experience, next_year_price, idv_piid, business_size. sort: 'asc' or 'desc'. exclude: pipe-delimited hit _id values to exclude from results and stats.
| Name | Type | Req | Description |
|---|---|---|---|
| business_size | – | – | – |
| education_level | – | – | – |
| exclude | – | – | – |
| experience_max | – | – | – |
| experience_min | – | – | – |
| keyword | string | yes | – |
| ordering | string | – | – |
| page | integer | – | – |
| page_size | integer | – | – |
| price_max | – | – | – |
| price_min | – | – | – |
| security_clearance | – | – | – |
| sin | – | – | – |
| sort | string | – | – |
| worksite | – | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
price_reasonableness_check ~152
Evaluate a proposed hourly rate against GSA ceiling rate distribution. Returns the benchmark statistics plus a positioning analysis: z-score, comparison to median, IQR position, and delta from average. Use this for FAR 15.404-1 price analysis: is the proposed rate within the expected range for comparable labor categories on GSA MAS? A rate above P75 may be high; above P90 warrants scrutiny. A rate below P25 may indicate an unrealistically low offer (potential performance risk).
| Name | Type | Req | Description |
|---|---|---|---|
| business_size | – | – | – |
| education_level | – | – | – |
| experience_max | – | – | – |
| experience_min | – | – | – |
| labor_category | string | yes | – |
| proposed_rate | number | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
sin_analysis ~125
Get rate distribution and statistics for a specific SIN. Returns rate statistics, education breakdown, business size breakdown, and sample records for a GSA MAS Special Item Number. Common SINs for professional services (live-verified to return records): - 54151S: IT Professional Services - 541611: Management and Financial Consulting - 541715: Engineering R&D - 541330ENG: Engineering Services - 561210FAC: Facilities Maintenance and Management - 611430: Training
| Name | Type | Req | Description |
|---|---|---|---|
| page_size | integer | – | – |
| sin_code | – | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
suggest_contains ~113
Discover exact field values via autocomplete/contains matching. Returns aggregation buckets showing matching values and their record counts. Use this BEFORE exact_search() to find the right value string. Minimum 2 characters required for the search term. Example workflow: 1. suggest_contains('vendor_name', 'booz') -> finds 'Booz Allen Hamilton Inc.' 2. exact_search('vendor_name', 'Booz Allen Hamilton Inc.') -> all their rates
| Name | Type | Req | Description |
|---|---|---|---|
| field | string | yes | – |
| term | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
vendor_rate_card ~315
Get ceiling rates for a specific vendor, one page at a time. Auto-discovers the exact vendor name via suggest-contains, then pulls their rate records. Returns labor categories, rates, education levels, experience requirements, SINs, and contract numbers. Pass a partial name (e.g., 'booz' for Booz Allen Hamilton). The tool finds the exact registered name automatically. Large vendors span many pages: Booz Allen Hamilton carries ~1,900 labor categories. The default page_size is 100 (~23KB) because a 500-row page for a vendor that size is ~114KB and overflows MCP client output limits. Rows are ordered by labor_category ascending by default, so a partial card is alphabet-biased; check has_more and keep calling with next_page until it is false before treating the card as complete. There is no server-side way to intersect a vendor with a labor-category keyword (the v3 API ignores vendor_name and labor_category as filter fields; live-verified). To find specific categories, page through the full card and match client-side. If the discovery term matches multiple vendors, this tool picks the one with the most rate records and returns a _candidates list so the caller can re-query with a more specific term if needed.
| Name | Type | Req | Description |
|---|---|---|---|
| ordering | string | – | – |
| page | integer | – | – |
| page_size | integer | – | – |
| sort | string | – | – |
| vendor_name | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
What is the GSA CALC+ MCP server?
GSA CALC+ is an MCP server listed in the public MCP registry as com.1102tools/gsa-calc-mcp. GSA CALC+ awarded labor ceiling rates from more than 230,000 MAS contract records. 8 tools. This page covers its PyPI package (gsa-calc-mcp).
Is the GSA CALC+ MCP server safe to use?
GSA CALC+ scores 79 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the GSA CALC+ MCP server expose?
GSA CALC+ exposes 8 tools: keyword_search, exact_search, suggest_contains, filtered_browse, igce_benchmark, and 3 more. Their descriptions and schemas cost roughly 1,589 tokens of context every time the server is loaded.
Is the GSA CALC+ MCP server still maintained?
GSA CALC+ is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the GSA CALC+ MCP server under?
GSA CALC+ declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.