Stack Facts

by g5joilnmeep4ntz3nwezxt5dmu.srv.us · remote · no sign-in to list tools · v0.5.0 · published by us.srv.g5joilnmeep4ntz3nwezxt5dmu

Signed EOL dates, exploited CVEs and LLM prices; pay per call in USDC, no account, no daily cap.

Final · 1Changes · 14

Compare Registry entry

41 tools: 1 do something that can't be undone, 14 change things and 26 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone1Claude Code: ask: see these tools
Changes things14Claude Code: ask: see these tools
Only reads26Claude Code: allow: see these tools

5 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http stackfacts https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp

Findings

Matches of fixed checks, with the text they matched.

5 warn

Warnstackfacts_preflight
The server marks "stackfacts_preflight" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
What this check looks for
Warnstackfacts_license_check
The server marks "stackfacts_license_check" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
What this check looks for
Warnstackfacts_cve_prioritize
The server marks "stackfacts_cve_prioritize" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
What this check looks for
Warnstackfacts_package_preflight
The server marks "stackfacts_package_preflight" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
What this check looks for
Warnstackfacts_upgrade_delta
The server marks "stackfacts_upgrade_delta" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

41 tools

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

stackfacts_upgrade_deltaCheck moving an npm or PyPI package from one version to another: advisories fixed or introduced, KEV, licence, runtime.1 finding
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "stackfacts_upgrade_delta" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
  What this check looks for
Description, as the server wrote it
Check moving an npm or PyPI package from one version to another: advisories fixed or introduced, KEV, licence, runtime. Returns go, review or no_go.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Changes things 14Creates or changes something that can be changed back.Claude Code: ask

stackfacts_cve_prioritizeCall before patching: rank up to 100 CVEs by CISA KEV status, then CVSS base score.1 finding
Why it is in this group
- The description's first verb is "call": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "stackfacts_cve_prioritize" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
  What this check looks for
Description, as the server wrote it
Call before patching: rank up to 100 CVEs by CISA KEV status, then CVSS base score.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_eol_checkCheck runtimes and OS versions for EOL: is each still supported?No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check runtimes and OS versions for EOL: is each still supported? Up to 50 product@version pairs, end-of-life date, support status; unknowns get suggestions.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_eol_cycleCheck if a version is still supported (is python 3.12 still supported?): one release cycle, its EOL (end-of-life) date, support status, LTS, latest patch.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check if a version is still supported (is python 3.12 still supported?): one release cycle, its EOL (end-of-life) date, support status, LTS, latest patch.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_eol_imageCheck a container image for EOL: is node:18-alpine still supported?No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check a container image for EOL: is node:18-alpine still supported? Maps its runtime, Java and base OS to end-of-life date and support status.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_kev_checkCheck up to 100 CVEs at once against CISA KEV (known exploited vulnerabilities); returns in_kev and the KEV details for each one.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check up to 100 CVEs at once against CISA KEV (known exploited vulnerabilities); returns in_kev and the KEV details for each one.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_license_checkCall before adding a dependency: check SPDX licences or packages against your project licence and use, with a compatibility verdict per item.1 finding
Why it is in this group
- The description's first verb is "call": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "stackfacts_license_check" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
  What this check looks for
Description, as the server wrote it
Call before adding a dependency: check SPDX licences or packages against your project licence and use, with a compatibility verdict per item.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_models_estimateEstimate the USD cost of an LLM call from input, output and cached token counts, exact to the micro-dollar, with the price lines used.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Estimate the USD cost of an LLM call from input, output and cached token counts, exact to the micro-dollar, with the price lines used.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_models_watchCheck LLMs for what changed since your last call: changed records (with today's price and limits), removals, deprecated or soon deprecated, with snapshot dates.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check LLMs for what changed since your last call: changed records (with today's price and limits), removals, deprecated or soon deprecated, with snapshot dates.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_osv_checkCheck dependencies or a lockfile for vulnerable and malicious packages: up to 50 purls, or a package-lock, yarn.lock, requirements.txt or poetry.lock, on OSV.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check dependencies or a lockfile for vulnerable and malicious packages: up to 50 purls, or a package-lock, yarn.lock, requirements.txt or poetry.lock, on OSV.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_package_preflightCall before installing an npm or PyPI package: latest or given version, licence, OSV vulns, CISA KEV CVEs, deprecation or yank.1 finding
Why it is in this group
- The description's first verb is "call": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "stackfacts_package_preflight" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
  What this check looks for
Description, as the server wrote it
Call before installing an npm or PyPI package: latest or given version, licence, OSV vulns, CISA KEV CVEs, deprecation or yank. Returns ok, caution or block.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_preflightCall before installing a package an LLM suggested: one npm, PyPI or purl version against OSV, CISA KEV and EOL data.1 finding
Why it is in this group
- The description's first verb is "call": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "stackfacts_preflight" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "call": a word for a change.
  What this check looks for
Description, as the server wrote it
Call before installing a package an LLM suggested: one npm, PyPI or purl version against OSV, CISA KEV and EOL data. Returns ok, warn or block with reasons.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_stack_checkCheck dependencies, runtimes and OS versions in one call: OSV for up to 50 purls, EOL for 50 product@version pairs, CISA KEV hits, suggestions for unknowns.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check dependencies, runtimes and OS versions in one call: OSV for up to 50 purls, EOL for 50 product@version pairs, CISA KEV hits, suggestions for unknowns.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_stack_watchCheck dependencies, runtimes and OS versions for what changed since your last call: EOL passed or near, new OSV advisories, new CISA KEV hits.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check dependencies, runtimes and OS versions for what changed since your last call: EOL passed or near, new OSV advisories, new CISA KEV hits. Returns a token.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_tryTry a paid answer for free on a fixed example: nodejs end-of-life cycles, CVE-2021-44228 in CISA KEV, or openai/gpt-4o prices.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Try a paid answer for free on a fixed example: nodejs end-of-life cycles, CVE-2021-44228 in CISA KEV, or openai/gpt-4o prices.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Only reads 26Looks things up and changes nothing.Claude Code: allow

stackfacts_bcp47_lookupGet an IANA language tag (en-AU, zh-Hant) part by part: type, description, scope, deprecation and preferred value from the Language Subtag Registry.No findings
Why it is in this group
- The name "stackfacts_bcp47_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get an IANA language tag (en-AU, zh-Hant) part by part: type, description, scope, deprecation and preferred value from the Language Subtag Registry.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_capec_lookupGet one MITRE CAPEC attack pattern by id: severity, likelihood, prerequisites, mitigations, related CWE and ATT&CK ids and MITRE link.No findings
Why it is in this group
- The name "stackfacts_capec_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get one MITRE CAPEC attack pattern by id: severity, likelihood, prerequisites, mitigations, related CWE and ATT&CK ids and MITRE link.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_control_lookupGet one NIST SP 800-53 Rev 5 security control or enhancement by id (AC-2, AC-2(1)): title, statement, guidance, related controls and status.No findings
Why it is in this group
- The name "stackfacts_control_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get one NIST SP 800-53 Rev 5 security control or enhancement by id (AC-2, AC-2(1)): title, statement, guidance, related controls and status.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_cve_lookupGet any CVE: CISA KEV entry, CVSS score and patch priority, plus every OSV advisory aliased to it, with affected packages and fixed versions.No findings
Why it is in this group
- The name "stackfacts_cve_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get any CVE: CISA KEV entry, CVSS score and patch priority, plus every OSV advisory aliased to it, with affected packages and fixed versions.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_cve_searchFind CVEs by keyword or package name in CISA KEV and OSV (not all of NVD), with KEV status and CVSS v3 where an OSV advisory has one.No findings
Why it is in this group
- The name "stackfacts_cve_search" says "search": a word for reading.
Description, as the server wrote it
Find CVEs by keyword or package name in CISA KEV and OSV (not all of NVD), with KEV status and CVSS v3 where an OSV advisory has one.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_cwe_lookupGet one MITRE CWE weakness by id (79 or CWE-79): name, status, description and MITRE link.No findings
Why it is in this group
- The name "stackfacts_cwe_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get one MITRE CWE weakness by id (79 or CWE-79): name, status, description and MITRE link. From the CWE catalogue (v4.20); MITRE notice on every answer.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_domain_lookupGet the public suffix, registrable domain and subdomain of a host name from the Mozilla Public Suffix List, with the matching rule and section.No findings
Why it is in this group
- The name "stackfacts_domain_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get the public suffix, registrable domain and subdomain of a host name from the Mozilla Public Suffix List, with the matching rule and section.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_eol_productList every release cycle of a product (Node.js, Python, Ubuntu…) and if it is still supported: EOL (end-of-life) date, support status, LTS, latest version.No findings
Why it is in this group
- The description's first verb is "list": a word for reading.
Description, as the server wrote it
List every release cycle of a product (Node.js, Python, Ubuntu…) and if it is still supported: EOL (end-of-life) date, support status, LTS, latest version.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_eol_snapshotDownload the signed EOL (end-of-life) snapshot (endoflife.date, MIT): support status of every product and cycle, still supported or not, plus its manifest.No findings
Why it is in this group
- The name "stackfacts_eol_snapshot" says "snapshot": a word for reading.
Description, as the server wrote it
Download the signed EOL (end-of-life) snapshot (endoflife.date, MIT): support status of every product and cycle, still supported or not, plus its manifest.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_indexList the valid ids for free: end-of-life product names and aliases, or LLM provider/model ids, so a paid call never misses.No findings
Why it is in this group
- The description's first verb is "list": a word for reading.
Description, as the server wrote it
List the valid ids for free: end-of-life product names and aliases, or LLM provider/model ids, so a paid call never misses.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_kev_changesList CVEs added to, removed from or changed in CISA KEV since a snapshot_id, so an agent can poll for newly exploited vulnerabilities.No findings
Why it is in this group
- The description's first verb is "list": a word for reading.
Description, as the server wrote it
List CVEs added to, removed from or changed in CISA KEV since a snapshot_id, so an agent can poll for newly exploited vulnerabilities.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_kev_lookupCheck if a CVE is actively exploited (CISA KEV): in_kev, date added, remediation due date, required action and known ransomware use.No findings
Why it is in this group
- The name "stackfacts_kev_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Check if a CVE is actively exploited (CISA KEV): in_kev, date added, remediation due date, required action and known ransomware use.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_kev_snapshotDownload the full signed CISA KEV snapshot: every known exploited vulnerability, with a manifest to verify the sha256 and signature.No findings
Why it is in this group
- The name "stackfacts_kev_snapshot" says "snapshot": a word for reading.
Description, as the server wrote it
Download the full signed CISA KEV snapshot: every known exploited vulnerability, with a manifest to verify the sha256 and signature.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_keysGet the Ed25519 public keys (JWK) that verify the signature on every answer and snapshot manifest.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it
Get the Ed25519 public keys (JWK) that verify the signature on every answer and snapshot manifest.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_lockfile_diffCheck npm or PyPI purl lists or raw lockfiles: upgrades judged on advisories, KEV, licence; same version, other hash = hash_mismatch.No findings
Why it is in this group
- The name "stackfacts_lockfile_diff" says "diff": a word for reading.
Description, as the server wrote it
Check npm or PyPI purl lists or raw lockfiles: upgrades judged on advisories, KEV, licence; same version, other hash = hash_mismatch. Returns go, review, no_go.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_manifestGet the signed manifest of a dataset's latest snapshot for free: snapshot_id, sha256, record count, source, licence and signature.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it
Get the signed manifest of a dataset's latest snapshot for free: snapshot_id, sha256, record count, source, licence and signature.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_models_changesList LLM models added, removed or changed (price per million tokens, context window, model deprecation date) since a snapshot_id.No findings
Why it is in this group
- The description's first verb is "list": a word for reading.
Description, as the server wrote it
List LLM models added, removed or changed (price per million tokens, context window, model deprecation date) since a snapshot_id.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_models_cheapestFind the cheapest model with tools and 128k context, or any limits you set: ranks the 10 cheapest LLMs by blended price per million tokens.No findings
Why it is in this group
- The description's first verb is "find": a word for reading.
Description, as the server wrote it
Find the cheapest model with tools and 128k context, or any limits you set: ranks the 10 cheapest LLMs by blended price per million tokens.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_models_lookupGet an LLM model's price per million tokens (input, output, cached), context window, max output, capabilities and model deprecation date.No findings
Why it is in this group
- The name "stackfacts_models_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get an LLM model's price per million tokens (input, output, cached), context window, max output, capabilities and model deprecation date.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_models_snapshotDownload the full signed LLM model catalogue (LiteLLM + models.dev, MIT): prices, limits and capabilities, with a verifiable manifest.No findings
Why it is in this group
- The name "stackfacts_models_snapshot" says "snapshot": a word for reading.
Description, as the server wrote it
Download the full signed LLM model catalogue (LiteLLM + models.dev, MIT): prices, limits and capabilities, with a verifiable manifest.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_package_cardGet an npm or PyPI package's latest version, publish dates, deprecation or yank, SPDX licence, repository and runtime range.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it
Get an npm or PyPI package's latest version, publish dates, deprecation or yank, SPDX licence, repository and runtime range.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_port_lookupGet the IANA service name, transport, description and reference for a port number from the IANA Service Name and Transport Protocol Port Number Registry.No findings
Why it is in this group
- The name "stackfacts_port_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get the IANA service name, transport, description and reference for a port number from the IANA Service Name and Transport Protocol Port Number Registry.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_previewPreview a dataset for free: sample end-of-life products, newest CISA KEV entries, LLM prices, a package card or a licence verdict.No findings
Why it is in this group
- The name "stackfacts_preview" says "preview": a word for reading.
Description, as the server wrote it
Preview a dataset for free: sample end-of-life products, newest CISA KEV entries, LLM prices, a package card or a licence verdict.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_technique_lookupGet one technique by id (T1055.011): name, tactics, platforms, description, mitigations, detection, data sources and link.No findings
Why it is in this group
- The name "stackfacts_technique_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get one technique by id (T1055.011): name, tactics, platforms, description, mitigations, detection, data sources and link. MITRE ATT&CK v20.0; credited.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_tz_lookupGet an IANA time zone (Europe/Berlin) or alias: current UTC offset, abbreviation, DST summary and backward-compatible names from tzdata.No findings
Why it is in this group
- The name "stackfacts_tz_lookup" says "lookup": a word for reading.
Description, as the server wrote it
Get an IANA time zone (Europe/Berlin) or alias: current UTC offset, abbreviation, DST summary and backward-compatible names from tzdata.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
stackfacts_validateValidate an id for free.No findings
Why it is in this group
- The name "stackfacts_validate" says "validate": a word for reading.
Description, as the server wrote it
Validate an id for free. Privacy: only an unknown EOL id is logged (access log, miss field); a 400 logs the input name, never its value. No other id is stored.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.5.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http stackfacts https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__stackfacts__stackfacts_eol_product",
      "mcp__stackfacts__stackfacts_eol_snapshot",
      "mcp__stackfacts__stackfacts_kev_lookup",
      "mcp__stackfacts__stackfacts_kev_changes",
      "mcp__stackfacts__stackfacts_kev_snapshot",
      "mcp__stackfacts__stackfacts_models_lookup",
      "mcp__stackfacts__stackfacts_models_cheapest",
      "mcp__stackfacts__stackfacts_models_changes",
      "mcp__stackfacts__stackfacts_models_snapshot",
      "mcp__stackfacts__stackfacts_cve_lookup",
      "mcp__stackfacts__stackfacts_cwe_lookup",
      "mcp__stackfacts__stackfacts_technique_lookup",
      "mcp__stackfacts__stackfacts_capec_lookup",
      "mcp__stackfacts__stackfacts_domain_lookup",
      "mcp__stackfacts__stackfacts_port_lookup",
      "mcp__stackfacts__stackfacts_control_lookup",
      "mcp__stackfacts__stackfacts_bcp47_lookup",
      "mcp__stackfacts__stackfacts_tz_lookup",
      "mcp__stackfacts__stackfacts_package_card",
      "mcp__stackfacts__stackfacts_cve_search",
      "mcp__stackfacts__stackfacts_lockfile_diff",
      "mcp__stackfacts__stackfacts_preview",
      "mcp__stackfacts__stackfacts_index",
      "mcp__stackfacts__stackfacts_validate",
      "mcp__stackfacts__stackfacts_manifest",
      "mcp__stackfacts__stackfacts_keys"
    ],
    "ask": [
      "mcp__stackfacts__stackfacts_eol_cycle",
      "mcp__stackfacts__stackfacts_eol_check",
      "mcp__stackfacts__stackfacts_eol_image",
      "mcp__stackfacts__stackfacts_kev_check",
      "mcp__stackfacts__stackfacts_models_estimate",
      "mcp__stackfacts__stackfacts_models_watch",
      "mcp__stackfacts__stackfacts_stack_check",
      "mcp__stackfacts__stackfacts_osv_check",
      "mcp__stackfacts__stackfacts_preflight",
      "mcp__stackfacts__stackfacts_license_check",
      "mcp__stackfacts__stackfacts_cve_prioritize",
      "mcp__stackfacts__stackfacts_package_preflight",
      "mcp__stackfacts__stackfacts_upgrade_delta",
      "mcp__stackfacts__stackfacts_stack_watch",
      "mcp__stackfacts__stackfacts_try"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as stackfacts. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/us.srv.g5joilnmeep4ntz3nwezxt5dmu/stackfacts/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

15 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

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Source: MCP Registry. Synced Oct 21, 2026, 18:55 UTC.

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